Рефераты
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| Veröffentlicht in: | Проблемы прочности |
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| Datum: | 2019 |
| Format: | Artikel |
| Sprache: | Russisch |
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Інститут проблем міцності ім. Г.С. Писаренко НАН України
2019
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/188317 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Рефераты // Проблеми міцності. — 2019. — № 1. — С. 197-202. — рос. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1859879616967081984 |
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| citation_txt | Рефераты // Проблеми міцності. — 2019. — № 1. — С. 197-202. — рос. |
| collection | DSpace DC |
| container_title | Проблемы прочности |
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Õå Æ., Ëèí Äæ.-Õ., Ñóí Êñ. Þ., Ãó Êñ. ×èñëåííîå ìîäåëèðîâàíèå âëèÿíèÿ îòíîøåíèÿ äàâëåíèé
íà âõîäå è âûõîäå íà êîýôôèöèåíò òåïëîïåðåäà÷è â ñòóïåíè àýðîòóðáèíû // Ïðîáëåìè
ì³öíîñò³. – 2019. – ¹. 1. – P. 5–15.
Íà îñíîâå ðàçðàáîòàííûõ ìåòîäîâ îöåíêè òåïëîïåðåäà÷è ãàçîâîé ñòóïåíè òóðáèíû ïðåäëî-
æåíà òåîðåòè÷åñêàÿ ìîäåëü äâóõìåðíîé ñòóïåíè àýðîòóðáèíû, â êîòîðîé ãàç òå÷åò ìèìî
êîíòóðà ëîïàñòè òóðáèíû. Ïîëÿ ñêîðîñòåé, òåìïåðàòóð è äàâëåíèé, à òàêæå ðàñïðåäåëåíèå
êîýôôèöèåíòà òåïëîïåðåäà÷è âäîëü ïîâåðõíîñòåé äàâëåíèÿ è ðàçðåæåíèÿ, ïåðåäíåé è çàäíåé
êðîìîê ëîïàñòè òóðáèíû ðàññ÷èòûâàëèñü ñ ïîìîùüþ ïðîãðàììû FLUENT ïðè ðàçíîì îòíî-
øåíèè äàâëåíèé. Ýòî ïîçâîëèëî èññëåäîâàòü ýâîëþöèþ êîýôôèöèåíòà òåïëîïåðåäà÷è ïðè
ðàçëè÷íîì îòíîøåíèè äàâëåíèé â îäèíàêîâîì ïîëîæåíèè è ïðè îäèíàêîâîì îòíîøåíèè
äàâëåíèé â ðàçëè÷íûõ ïîëîæåíèÿõ.
×àíã Æ.-Ë., Æàî Â.-Ë., Çîó Ã.-Ï., Ñóí Õ.-Ê. Ïðîïîðöèîíàëüíîå ìîäåëèðîâàíèå îïòèìèçàöèè
ëåãêîâåñíîé áðîíè èç êîìïîçèòà êåðàìèêà/àëþìèíèåâûé ñïëàâ // Ïðîáëåìè ì³öíîñò³. – 2019. –
¹. 1. – P. 16–23.
Êîíñòðóêöèÿ ëåãêîâåñíîé áðîíè èç êîìïîçèòà êåðàìèêà/àëþìèíèåâûé ñïëàâ ðàññìàòðèâàåòñÿ
è îïòèìèçèðóåòñÿ äëÿ óëó÷øåíèÿ çàùèòíûõ õàðàêòåðèñòèê. Ïðîöåññ ïðîíèêíîâåíèÿ â áðîíþ
ìîäåëèðóåòñÿ ñ èñïîëüçîâàíèåì ïðîãðàììû SPH ïðîãðàììíîãî îáåñïå÷åíèÿ ANSYS/AUTODYN.
Òî÷íîñòü ìåòîäà ñãëàæåííûõ ÷àñòèö (ìåòîä SPH) áûëà ïîäòâåðæäåíà ïóòåì ñðàâíåíèÿ ïîëó-
÷åííûõ äàííûõ ñ èçâåñòíûìè. Ðàññìàòðèâàëèñü òðè òèïà êîìïîçèòíîé áðîíè îáùåé òîëùèíû
30, 40, 50 ìì è ñ ïÿòüþ ðàçëè÷íûìè îòíîøåíèÿìè òîëùèíà êåðàìèêè/òîëùèíà ìåòàëëà ïðè
ìîäåëèðîâàíèè îñòàòî÷íîé ñêîðîñòè ïóëè è êîíå÷íîé äëèíû. Ðåçóëüòàòû ìîäåëèðîâàíèÿ
ñðàâíèâàþòñÿ ñ òåîðåòè÷åñêîé ìîäåëüþ. Ëó÷øèå ïóëåçàùèòíûå õàðàêòåðèñòèêè òðåõ òèïîâ
áðîíè èç êåðàìè÷åñêîãî êîìïîçèòà áûëè ïîëó÷åíû ïðè îòíîøåíèè òîëùèíà êåðàìèêè/òîëùèíà
àëþìèíèÿ â êîìïîçèòíîé áðîíå 4:1.
Ãóî À. Ô., Ëè Äæ. Ô., Ëè Ô. É., Êñó Äæ., Æàíã ×. Â., ×åí Ø. Ñâîéñòâà ïðè ñæàòèè êîìïîçèòîâ
íà îñíîâå òåðìîïëàñòè÷íîãî êðàõìàëà ñ ðàçëè÷íûìè ïëàñòèôèêàòîðàìè // Ïðîáëåìè ì³öíîñò³.
– 2019. – ¹. 1. – P. 24–31.
Êîìïîçèòû íà îñíîâå òåðìîïëàñòè÷íîãî êðàõìàëà îêàçàëèñü â öåíòðå âíèìàíèÿ êàê îòå÷åñò-
âåííûõ, òàê è çàðóáåæíûõ ó÷åíûõ, òàê êàê îíè îñíîâàíû íà ýêîëîãè÷íîì ñûðüå è ïîëíîñòüþ
ðàçëàãàþòñÿ. Òàêèå êîìïîçèòû ïîëó÷àëè ôîðìîâêîé ñ èñïîëüçîâàíèåì êðàõìàëà è ñèçàëåâûõ
âîëîêîí â êà÷åñòâå îñíîâíûõ ìàòåðèàëîâ. Èçó÷åíî âëèÿíèå òåðìîïëàñòè÷íîãî êðàõìàëà ñ
ðàçëè÷íîé äîëåé ïðîñòûõ è ñîñòàâíûõ ïëàñòèôèêàòîðîâ íà àìîðòèçàöèîííûå ñâîéñòâà êîìïî-
çèòîâ. Ýêñïåðèìåíòàëüíûå ðåçóëüòàòû ïîêàçàëè, ÷òî â îïðåäåëåííûõ ïðåäåëàõ ñ óâåëè÷åíèåì
ñîäåðæàíèÿ ïëàñòèôèêàòîðîâ ïîâûøàþòñÿ ñîïðîòèâëåíèå ìàòåðèàëà äàâëåíèþ è åãî àìîðòè-
çàöèîííûå õàðàêòåðèñòèêè. Ïðè ñîäåðæàíèè ñîñòàâíîãî ïëàñòèôèêàòîðà 15% ñîïðîòèâëåíèå
äàâëåíèþ ÷åòûðåõ òèïîâ êîìïîçèòîâ, ïîëó÷åííûõ ñ èñïîëüçîâàíèåì ðàçëè÷íûõ ìàññîâûõ
ñîîòíîøåíèé ôîìàìèäà è ìî÷åâèíû, èçìåíÿåòñÿ â ðÿäó 2:1>1:1>1:2, à ñ èñïîëüçîâàíèåì
ðàçëè÷íûõ ìàññîâûõ ñîîòíîøåíèé ãëèöåðèíà è ýòèëåíãëèêîëÿ – â ïîñëåäîâàòåëüíîñòè
1:2>2:1>1:1. Êîìïîçèòû íà îñíîâå êðàõìàëà, ñîäåðæàùèå ñîñòàâíîé ïëàñòèôèêàòîð, ÿâëÿþòñÿ
íåðåãóëÿðíûìè ýëàñòîìåðàìè, è çàâèñèìîñòü ìåæäó íàïðÿæåíèåì è äåôîðìàöèåé îïèñûâàåòñÿ
â ïåðâóþ î÷åðåäü ôóíêöèåé ãèïåðáîëè÷åñêîé òàíãåíñîèäû è âî âòîðóþ î÷åðåäü ôóíêöèåé
òàíãåíñîèäû.
×åí Æ., Ëè Äæ. Êñ., Ëèí Æ. Ã., Êâè Äæ. Äæ., Ñóí Ë., Âàíã Ã. Ä. Òåõíîëîãè÷åñêèå è
ïðîìûøëåííûå ìàñøòàáíûå èññëåäîâàíèÿ ãîðÿ÷åêàòàíîãî ëèñòà, ïëàêèðîâàííîãî íåðæàâå-
þùåé ñòàëüþ/óãëåðîäèñòîé ñòàëüþ // Ïðîáëåìè ì³öíîñò³. – 2019. – ¹. 1. – P. 32–38.
Ïðîâåäåíî ïðîìûøëåííîå èñïûòàíèå ëèñòà, ïëàêèðîâàííîãî íåðæàâåþùåé ñòàëüþ 304 ñ
îáû÷íîé óãëåðîäèñòîé ñòàëüþ Q345B, ñ èñïîëüçîâàíèåì ëèíèè ãîðÿ÷åé ïðîêàòêè ãðóïïû
Hesteel. Ïîñëå äâóõ ýòàïîâ îïûòíîãî ïðîèçâîäñòâà áûëî óñòàíîâëåíî, ÷òî îñíîâíûå òåõíè-
Ðåôåðàòû
ISSN 0556-171X. Ïðîáëåìè ì³öíîñò³, 2019, ¹ 1 197
÷åñêèå ïîêàçàòåëè ïðîèçâîäñòâà ëèñòà óäîâëåòâîðÿþò òðåáîâàíèÿì GB/T 8165–2008. Ïðî÷-
íîñòü ïðè ñäâèãå íà ïîâåðõíîñòè ðàçäåëà ïëàêèðîâàííîãî ëèñòà ïðåâûøàëà 360 ÌÏà, ïðåäåë
òåêó÷åñòè êîíå÷íîãî ïðîäóêòà ïðåâûøàë 257 ÌÏà, ïðî÷íîñòü ïðè ðàñòÿæåíèè èñïûòóåìîãî
ìàòåðèàëà ïðåâûøàëà 351 ÌÏà, à óäëèíåíèå ïëàêèðîâàííîãî ëèñòà ïðåâûøàëî 39,8%. Ïîêà-
çàíî, ÷òî ñòåïåíü àìàëüãàìàöèè ñëîÿ íåðæàâåþùåé ñòàëè è íåëåãèðîâàííîé óãëåðîäèñòîé
ñòàëè áûëà âûñîêîé, à ïîâåðõíîñòü ðàçäåëà êîìïîçèòà ðîâíîé è ñîâåðøåííîé. Ñâîéñòâà ïðè
ðàñòÿæåíèè è ñäâèãå ïëàêèðîâàííûõ íåðæàâåþùåé ñòàëüþ ëèñòîâ, èçãîòîâëåííûõ ñ ïîìîùüþ
ïðîöåññà âçðûâíîé ïðîêàòêè, ñîîòâåòñòâîâàëè òàêîâûì, èçãîòîâëåííûì ïóòåì âçðûâíîãî
ïðîöåññà. Îäíàêî ýôôåêòèâíîñòü ïðîöåññà âçðûâíîé ïðîêàòêè ñóùåñòâåííî âûøå, ÷åì âçðûâ-
íîãî ïðîöåññà, ïðè ýòîì ïðîèçâîäñòâåííûå çàòðàòû áûëè ãîðàçäî ìåíüøå.
Êñó Ë., Äàé Ã. Ç. Àíàëèç óñòàëîñòè òîëêàòåëÿ èç àëþìèíèåâîãî ñïëàâà íà îñíîâå óñêîðåííîãî
èñïûòàíèÿ íà äîëãîâå÷íîñòü è ìîäåëèðîâàíèÿ íà êîíå÷íîýëåìåíòíîé ìîäåëè // Ïðîáëåìè
ì³öíîñò³. – 2019. – ¹. 1. – P. 39–47.
Ñïåêòð óñòàëîñòíîãî íàãðóæåíèÿ ïðè óñêîðåííîì èñïûòàíèè íà äîëãîâå÷íîñòü èñïîëüçîâàí
êàê ïðè ÷èñëåííîì ìîäåëèðîâàíèè, òàê è ïðè ñòåíäîâûõ èñïûòàíèÿõ òîëêàòåëÿ. Ñèììåòðè÷-
íûé ñïåêòð òîëêàòåëÿ áûë óïðîùåí êàê ïîëîæèòåëüíûé ñïåêòð ïóëüñèðóþùåé íàãðóçêè
ñîãëàñíî ñïåêòðó íàïðÿæåíèé êðèòè÷åñêîãî óçëà â êîíå÷íîýëåìåíòíîé ìîäåëè. Ðåçóëüòàòû
àíàëèçà, ïîëó÷åííûå ñ ïîìîùüþ ìîäåëè, ñâèäåòåëüñòâóþò î òîì, ÷òî óñòàëîñòíàÿ òðåùèíà
çàðîæäàåòñÿ íà êðàþ òî÷å÷íîãî îòâåðñòèÿ â ïåðâîì ïîëîæåíèè ñ ìàêñèìàëüíûì íàïðÿæåíèåì
è ìèíèìàëüíîé óñòàëîñòíîé äîëãîâå÷íîñòüþ. Ñîãëàñíî ñòåíäîâûì èñïûòàíèÿì çàðîæäåíèå
óñòàëîñòíûõ òðåùèí è óñòàëîñòíàÿ äîëãîâå÷íîñòü òîëêàòåëÿ õîðîøî ñîãëàñóþòñÿ ñ ðåçóëü-
òàòàìè àíàëèçà íà êîíå÷íîýëåìåíòíîé ìîäåëè.
Ãóàí Á., Çàíã É., ßíã Ô., ßíã Êñ. É., Êâèí Ê. Ìîäåëü òåðìîìåõàíè÷åñêîé ñâÿçè ëèñòà,
ïëàêèðîâàííîãî íåðæàâåþùåé ñòàëüþ, ïðè òåðìîîáðàáîòêå // Ïðîáëåìè ì³öíîñò³. – 2019. –
¹. 1. – P. 48–64.
Áûñòðîå è òî÷íîå ïðîãíîçèðîâàíèå âíóòðåííåãî íàïðÿæåíèÿ è êðèâèçíû äåôîðìàöèè ëèñòîâ,
ïëàêèðîâàííûõ íåðæàâåþùåé ñòàëüþ, ïðè òåðìîîáðàáîòêå îñòàåòñÿ àêòóàëüíîé ïðîáëåìîé â
ýòîé îáëàñòè èññëåäîâàíèÿ. Ðàññìàòðèâàåòñÿ ìîäåëü òåðìîìåõàíè÷åñêîé ñâÿçè ëèñòà, îñíîâàí-
íàÿ íà èíæåíåðíîé òåîðèè óïðóãèõ è ïëàñòè÷åñêèõ äåôîðìàöèé. Äëÿ ðåàëèçàöèè ýôôåêòèâ-
íîãî ÷èñëåííîãî ðàñ÷åòà ìîäåëè ñîâìåñòíî èñïîëüçóþòñÿ ìåòîä äèñêðåòèçàöèè è ðàçíîñòíûå
óðàâíåíèÿ. Ïðèìåíåíèå îáîáùåííîé êîíå÷íîýëåìåíòíîé ìîäåëè ïîçâîëÿåò ïîäòâåðäèòü ñîîò-
âåòñòâóþùèå óñëîâèÿ óïðîùåíèÿ è ðàöèîíàëüíîñòü ëîãèêè ÷èñëåííîãî ðàñ÷åòà ìîäåëè. Ïëà-
íèðóþòñÿ è îïèñûâàþòñÿ ýêñïåðèìåíòû ïî òåðìîîáðàáîòêå òàêèõ ïëàêèðîâàííûõ ëèñòîâ è
àíàëèçèðóåòñÿ ñïîñîáíîñòü ìîäåëè ïðîãíîçèðîâàòü õàðàêòåð íàïðÿæåíèÿ è äåôîðìàöèè ïëàêè-
ðîâàííîãî ëèñòà â ðåàëüíîì ïðîöåññå òåðìîîáðàáîòêè. Ëîãèêà ðàñ÷åòà ìîäåëè îáîñíîâàíà, ïðè
ýòîì ïîãðåøíîñòü ïðîãíîçèðîâàíèÿ äåôîðìàöèè è âíóòðåííåãî äàâëåíèÿ ëèñòà ñîñòàâëÿåò
~15%. Ìîäåëü òàêæå èìååò î÷åíü âûñîêóþ âû÷èñëèòåëüíóþ ýôôåêòèâíîñòü è ìîæåò óäîâëå-
òâîðÿòü òðåáîâàíèÿì àíàëèçà â ðåæèìå îí-ëàéí äëÿ ïðîöåññîâ òåðìîîáðàáîòêè.
Ôåíã Ð. Ê., Ëè Ë. Ë., Ëè Õ. É., Âàíã Ç. Ì., Æó Ç. Êñ. Ðàñ÷åò ñîïðîòèâëåíèÿ ðåøåòêè ñïëàâà
�-TiAl // Ïðîáëåìè ì³öíîñò³. – 2019. – ¹. 1. – P. 65–71.
Ìåòîäîì îòíîøåíèÿ ïëîòíîñòåé ðàññ÷èòàíû øèðèíà äèñëîêàöèè è ñîïðîòèâëåíèå ðåøåòêè
(íàïðÿæåíèå Ïàéåðëñà). Ðåçóëüòàòû ïîêàçûâàþò, ÷òî ñîïðîòèâëåíèå ðåøåòêè óìåíüøàåòñÿ ñ
óâåëè÷åíèåì øèðèíû äèñëîêàöèè. Ïóòåì ðàñ÷åòà ïîëó÷åíà çàâèñèìîñòü ìåæäó íàïðÿæåíèåì
Ïàéåðëñà è äèñëîêàöèîííûì óïðî÷íåíèåì, ñâèäåòåëüñòâóþùàÿ î òîì, ÷òî ïðåäåë òåêó÷åñòè
îòðèöàòåëüíî êîððåëèðóåò ñ íàïðÿæåíèåì ñäâèãà ìàòåðèàëà. Ïîýòîìó îíà ìîæåò äàòü ïîëåç-
íóþ èíôîðìàöèþ äëÿ âûáîðà ñîîòâåòñòâóþùåãî íàïðÿæåíèÿ ñäâèãà â ïðîöåññå ðàñòÿæåíèÿ.
Éîó Ø., Æàíã ×. Õ., ×åíã Êñ. Õ., Æó Ì. Öåíòðèôóæíîå ìîäåëèðîâàíèå òåïëîâîãî îòêëèêà
ñòåíêè äèàôðàãìû, âñòàâëåííîé â ñóõîé ïåñîê // Ïðîáëåìè ì³öíîñò³. – 2019. – ¹. 1. – P. 72–79.
Ãåîòåðìàëüíûå òåïëîîáìåííèêè, âñòðîåííûå â ñòåíêó äèàôðàãìû, ÿâëÿþòñÿ àëüòåðíàòèâíûì
âèäîì èñïîëüçîâàíèÿ âîçîáíîâëÿåìîé ýíåðãèè, êîòîðàÿ ìîæåò áûòü ïîëó÷åíà èç íåãëóáîêèõ
Ðåôåðàòû
198 ISSN 0556-171X. Ïðîáëåìè ì³öíîñò³, 2019, ¹ 1
ãåîòåðìàëüíûõ ðåñóðñîâ. Èññëåäîâàí òåïëîâîé îòêëèê ñòåíêè äèàôðàãìû, âñòàâëåííîé â
ïåñî÷íîå îñíîâàíèå, â óñëîâèÿõ òåðìîìåõàíè÷åñêîé ñâÿçè ïóòåì ëàáîðàòîðíûõ èñïûòàíèé â
öåíòðèôóãå. Ìîäåëèðîâàíèå òåïëîîáìåííûõ òðóáîê, âñòðîåííûõ â ñòåíêó äèàôðàãìû, âñòàâ-
ëåííóþ â ïåñî÷íîå îñíîâàíèå, âêëþ÷àëî ïîïåðå÷íîå íàãðóæåíèå ñòåíêè è îñóùåñòâëÿëîñü â
ñðåäàõ 1 è 50g â öåíòðèôóãå. Èñïûòàíèÿ â óñëîâèÿõ òåïëîâîãî íàãðóæåíèÿ, ìåõàíè÷åñêîé
ðàçãðóçêè è òåðìîìåõàíè÷åñêîé ñâÿçè ïðîâîäèëèñü îòäåëüíî. Êîíòðîëèðîâàëèñü òåìïåðàòóðà,
äåôîðìàöèÿ è äàâëåíèå ãðóíòà íà ñòåíêó. Äåôîðìàöèÿ è òåïëîâîå íàïðÿæåíèå âäîëü êîíñîëü-
íîé ñòåíêè êîíòðîëèðîâàëèñü ïóòåì ÷èñëåííîãî ìîäåëèðîâàíèÿ â êàæäîì ñëó÷àå. Ðåçóëüòàòû
èñïûòàíèé ïîêàçûâàþò, ÷òî òåïëîâîå íàïðÿæåíèå íà ñòåíêå ïðåâûøàåò íàïðÿæåíèå, âûçâàííîå
âûåìêîé ãðóíòà. Ìàêñèìàëüíîå òåïëîâîå íàïðÿæåíèå íàáëþäàëîñü âáëèçè îñíîâàíèÿ ñòåíêè.
Õîòÿ ñòåíêà áûëà ñâÿçàíà îêðóæàþùèì ãðóíòîì, òåïëîâîå íàïðÿæåíèå íàêàïëèâàëîñü â
ïðîöåññå íàãðåâà â ðåçóëüòàòå èçìåíåíèÿ òåìïåðàòóðû, ÷òî íåîáõîäèìî ó÷èòûâàòü ïðè êîíñò-
ðóèðîâàíèè òåïëîîáìåííèêà â êîíñîëüíîé ñòåíå çäàíèé.
Âåé É. Õ., Âàíã Êñ. Ë., Ëèó Þ. Ï., ×åí Ë. Äæ. Âëèÿíèå äèàìåòðîâ øòèôòà íà õàðàêòåðèñòèêè
èçíîñà ïàð òðåíèÿ // Ïðîáëåìè ì³öíîñò³. – 2019. – ¹. 1. – P. 80–86.
Ñ öåëüþ îáîñíîâàíèÿ âûáîðà ðàçìåðîâ ïàð òðåíèÿ ïðîâîäÿòñÿ òðèáîëîãè÷åñêèå èñïûòàíèÿ ïî
îöåíêå âëèÿíèÿ äèàìåòðîâ øòèôòà íà õàðàêòåðèñòèêè èçíîñà ïóòåì èçìåíåíèÿ íàãðóçîê è
ñêîðîñòè ñêîëüæåíèÿ. Ïàðà òðåíèÿ ïðåäñòàâëÿåòñÿ â âèäå øòèôòîâ èç CuZn ê êîëüöàì èç
ñðåäíåóãëåðîäèñòîé ñòàëè (ñòàëü 1045). Äèôôåðåíöèàëüíàÿ ñêîðîñòü èçíàøèâàíèÿ è ôîðìóëà
äëÿ åå ðàñ÷åòà îïðåäåëÿþòñÿ äëÿ âûðàæåíèÿ ëèíåéíîé ñêîðîñòè èçíàøèâàíèÿ èëè ñîïðî-
òèâëåíèÿ èçíîñó åäèíèöû ïëîùàäè ïîïåðå÷íîãî ñå÷åíèÿ. Èññëåäóþòñÿ âëèÿíèå ðàçëè÷íîãî
äèàìåòðà òîðöåâîé ïîâåðõíîñòè øòèôòîâ, äèôôåðåíöèàëüíàÿ ñêîðîñòü èçíàøèâàíèÿ è åå
óâåëè÷åííûé ìíîæèòåëü. Ðåçóëüòàòû ïîêàçûâàþò, ÷òî ïðè ïîääåðæàíèè ïîñòîÿíñòâà ïðî-
èçâåäåíèÿ P V� � 0 095, ïîòåðè ïðè èñòèðàíèè îáðàçöîâ ìàëîãî äèàìåòðà (d1 0 6� , ìì) ìåíü-
øå, ÷åì îáðàçöîâ áîëüøîãî äèàìåòðà (d2 4 0� , ìì). Ïî ñðàâíåíèþ ñî ñêîðîñòüþ ñêîëüæåíèÿ
èçìåíåíèå íàãðóçêè áîëåå ñóùåñòâåííî âëèÿåò íà õàðàêòåðèñòèêè èçíîñà, îñîáåííî äëÿ
îáðàçöîâ ìàëîãî äèàìåòðà. Äèôôåðåíöèàëüíàÿ ñêîðîñòü èçíàøèâàíèÿ îáðàçöîâ ìàëîãî äèà-
ìåòðà âñåãäà áîëüøå, ÷åì îáðàçöîâ áîëüøîãî äèàìåòðà. Óâåëè÷åííûé ìíîæèòåëü äèôôåðåí-
öèàëüíîé ñêîðîñòè èçíàøèâàíèÿ âñåãäà ïðåâûøàåò óâåëè÷åííûé ìíîæèòåëü ïîâûøåíèÿ íà-
ïðÿæåíèÿ êîíòàêòíîãî äàâëåíèÿ, îñîáåííî äëÿ îáðàçöîâ ìàëîãî äèàìåòðà.
Ëèó Ø. Õ., Âó Ì. Ê., Ðàî Ì. Äæ., Ëè Ë. Õ., Êñèàî Õ. Ë. Ïîëó÷åíèå ïðîâîäÿùåãî áåòîíà,
ñîäåðæàùåãî ãðàôèòîâûé ïîðîøîê, åãî ñâîéñòâà è ìèêðîñòðóêòóðà // Ïðîáëåìè ì³öíîñò³. –
2019. – ¹. 1. – P. 87–96.
Ïðîâîäÿùèé áåòîí íå òîëüêî ñîõðàíÿåò ïðåèìóùåñòâà îáû÷íîãî áåòîíà, íî è èìååò âûñîêóþ
ýëåêòðîïðîâîäíîñòü; ìîæåò èñïîëüçîâàòüñÿ äëÿ óäàëåíèÿ ñíåãà è ïëàâëåíèÿ ëüäà íà äîðîãàõ.
Äëÿ ïîëó÷åíèÿ òàêîãî áåòîíà ïðèìåíÿëñÿ âìåñòî ïåñêà â êà÷åñòâå ïðîâîäÿùåãî ìåëêîãî
çàïîëíèòåëÿ ãðàôèòîâûé ïîðîøîê. Èññëåäóþòñÿ ñâîéñòâà è ìèêðîñòðóêòóðà áåòîíà. Óñòàíîâ-
ëåíî, ÷òî ïðî÷íîñòü áåòîíà óìåíüøàåòñÿ ñ óâåëè÷åíèåì ñîäåðæàíèÿ ãðàôèòîâîãî ïîðîøêà.
Ýëåêòðè÷åñêîå óäåëüíîå ñîïðîòèâëåíèå áåòîíà óìåíüøàåòñÿ ñ óâåëè÷åíèåì ìåëêîñòè è ñîäåð-
æàíèÿ ãðàôèòîâîãî ïîðîøêà; òåìïåðàòóðà ïîâûøàåòñÿ ïîñëå ýëåêòðèçàöèè, è áåòîí ïðîÿâëÿåò
âûñîêèé íàãðåâàòåëüíûé ýôôåêò. Ãðàôèòîâûé ïîðîøîê îêàçûâàåò íåçíà÷èòåëüíîå âëèÿíèå íà
ïðîäóêòû ãèäðàòàöèè ïðîâîäÿùåãî áåòîíà. Ñ óâåëè÷åíèåì ñîäåðæàíèÿ è ìåëêîñòè ãðàôè-
òîâîãî ïîðîøêà óâåëè÷èâàåòñÿ ïîëîæèòåëüíûé ýôôåêò çàïîëíåíèÿ ãðàôèòîâûì ïîðîøêîì äëÿ
ôîðìèðîâàíèÿ ïðîâîäÿùåé äîðîæêè.
Éèí Äæ. Ï., Øè Ç. Êñ., ×åí Äæ., ×àíã Á. Õ., Éè Äæ. É. Õàðàêòåðèñòèêà êóìóëÿòèâíîãî çàðÿäà
èç ðàçëè÷íûõ ìàòåðèàëîâ íà îñíîâå ïðèíöèïîâ ãèäðîäèíàìèêè ãëàäêèõ ÷àñòèö // Ïðîáëåìè
ì³öíîñò³. – 2019. – ¹. 1. – P. 97–107.
Îáëèöîâî÷íûé ìàòåðèàë – îäèí èç êëþ÷åâûõ ôàêòîðîâ ïðè ñîçäàíèè áðîíåáîéíûõ áîåïðè-
ïàñîâ, îêàçûâàþùèé âëèÿíèå íà ýôôåêòèâíîñòü âíåäðåíèÿ. Ðàáîòîñïîñîáíîñòü êóìóëÿòèâíîãî
çàðÿäà, ôîðìèðóåìîãî åãî îáëèöîâêîé, îïðåäåëÿåòñÿ ðàçëè÷íûìè ñâîéñòâàìè ìàòåðèàëà â
óñëîâèÿõ âçðûâíîé íàãðóçêè, â ÷àñòíîñòè äëÿ ìèøåíè ñ ýëåìåíòàìè äèíàìè÷åñêîé çàùèòû,
êîòîðûå óìåíüøàþò ïðîíèêàþùóþ ñïîñîáíîñòü, ðàññåèâàÿ êóìóëÿòèâíûé çàðÿä. Èçó÷åíû ðà-
Ðåôåðàòû
ISSN 0556-171X. Ïðîáëåìè ì³öíîñò³, 2019, ¹ 1 199
áî÷èå õàðàêòåðèñòèêè ýëåìåíòîâ êóìóëÿòèâíîãî çàðÿäà èç ðàçëè÷íûõ ìàòåðèàëîâ. Êîíå÷íî-
ýëåìåíòíîå ïðîãðàììíîå îáåñïå÷åíèå AUTODYN è ìåòîä ãèäðîäèíàìèêè ãëàäêèõ ÷àñòèö
èñïîëüçóþòñÿ ïðè ìîäåëèðîâàíèè ôîðìèðîâàíèÿ ýòèõ ýëåìåíòîâ è èõ âíåäðåíèè â ïëàñòèíû-
ìèøåíè èç òðåõ ìàòåðèàëîâ: Cu, ÏÒÔÝ è ÏÒÔÝ/Ñu, ÷òî áûëî ïðîâåðåíî ýêñïåðèìåíòàëüíî.
Ïîêàçàíî, ÷òî êóìóëÿòèâíûé çàðÿä äëÿ ìåäíîé îáëèöîâêè ôîðìèðóåòñÿ ïîä äåéñòâèåì äåòîíà-
öèîííîé âîëíû, òîãäà êàê ÏÒÔÝ è ÏÒÔÝ/Cu ìàòåðèàëû ãåíåðèðóþò ñòðóþ ðàñïûëåííûõ ÷àñòèö.
Óñòàíîâëåíî, ÷òî â ãîëîâíîé ÷àñòè ñêîðîñòü ñòðóè ÷àñòèö Ñu íàèìåíüøàÿ, ãëóáèíà âíåäðåíèÿ
íàèáîëüøàÿ, à ðàçìåð îòâåðñòèé íàèìåíüøèé, ñêîðîñòü ñòðóè ÷àñòèö ÏÒÔÝ íàèáîëüøàÿ,
ãëóáèíà âíåäðåíèÿ íàèìåíüøàÿ, ðàçìåð îòâåðñòèé çàíèìàåò ñðåäíåå ïîëîæåíèå, ñêîðîñòü è
ãëóáèíà âíåäðåíèÿ ñòðóè ÷àñòèö ÏÒÔÝ/Ñu çàíèìàþò ñðåäíåå ïîëîæåíèå, òîãäà êàê îòâåðñòèÿ
èìåþò íàèáîëüøèé ðàçìåð. Ñòðóÿ ÷àñòèö ÏÒÔÝ/Ñu îáëàäàåò áîëåå âûñîêîé ýôôåêòèâíîñòüþ
âíåäðåíèÿ ïî ñðàâíåíèþ ñî ñòðóåé ÏÒÔÝ, à åå ïðîíèêàþùàÿ ñïîñîáíîñòü âûøå, ÷åì ñòðóè Cu.
Ëèó Ñ. Â., Äæèí Ì. Ä., Âàíã Ê. Ò., ×åí Á. Ñ. Îïòèìèçàöèÿ îñòàòî÷íûõ íàïðÿæåíèé â ïîêðûòèÿõ
WC(Co,Ni), ïîëó÷àåìûõ ëàçåðíîé îáðàáîòêîé // Ïðîáëåìè ì³öíîñò³. – 2019. – ¹. 1. – P. 108–114.
Èçãîòîâëåíà òðåõêîìïîíåíòíàÿ ñìåñü ïîðîøêîâ êàðáèäà âîëüôðàìà (WC), êîáàëüòà (Ñî) è
íèêåëÿ (Ni) äëÿ ïîëó÷åíèÿ ìåòàëëîêåðàìè÷åñêèõ êîìïîçèöèîííûõ ïîêðûòèé, èñïîëüçóåìûõ
äëÿ ïëàêèðîâàíèÿ ñòàëè 40 Ñr. Ïðè èññëåäîâàíèè ïîêðûòèÿ ïîäáèðàëñÿ ñîñòàâ ñìåñè äëÿ
îöåíêè âëèÿíèÿ ñîîòíîøåíèÿ åå êîìïîíåíòîâ íà îñòàòî÷íûå íàïðÿæåíèÿ â ïëàêèðîâêàõ.
Òðåõêîìïîíåíòíàÿ ñìåñü WC/Co/Ni èìååò áîëåå âûñîêèå îñòàòî÷íûå íàïðÿæåíèÿ, ÷åì äâóõ-
êîìïîíåíòíûå ñìåñè Co/Ni èëè WC/Ni, çà èñêëþ÷åíèåì WC/Co. Îäíîêîìïîíåíòíûå ñîñòàâû
WC, Co èëè Ni îáóñëîâëèâàþò âûñîêóþ ÷óâñòâèòåëüíîñòü îñòàòî÷íûõ íàïðÿæåíèé, òðåùèíû
ñêîðåå ïðîõîäÿò âíóòðè ÷àñòèö WC, ÷åì âîêðóã íèõ, ðîñò òðåùèí ïðîèñõîäèò ãëàâíûì îáðàçîì
âäîëü ýâòåêòè÷åñêèõ ôàç äëÿ ñîñòàâà 50%Co–50%WC. Ïðèâåäåííàÿ ñïåöèàëüíàÿ ìîäåëü ÷åò-
âåðòîãî ïîðÿäêà ïîêàçûâàåò îòëè÷íîå ñîîòâåòñòâèå ïðè ïîäáîðå ñîñòàâà ñìåñè, õîðîøî ñîãëà-
ñóþòñÿ ìåæäó ñîáîé ïðîãíîçèðóåìûå è ýêñïåðèìåíòàëüíûå çíà÷åíèÿ îñòàòî÷íûõ íàïðÿæåíèé
â ëàçåðíûõ ïëàêèðîâêàõ.
Ëèí Õ., Ãåíã Õ. Ï., Æàíã É. É., Ëàé Õ., Ëèó Êñ. É., Æîó Êñ. Ô., Éþ Ë. Óñòàëîñòíàÿ ïðî÷íîñòü è
ïðîãíîç äîëãîâå÷íîñòè ëîïàòêè ãàçîâîé òóðáèíû èç ñóïåðñïëàâà íà íèêåëåâîé îñíîâå MAR-
M247 ñ ìíîæåñòâåííûìè êàðáèäíûìè âêëþ÷åíèÿìè // Ïðîáëåìè ì³öíîñò³. – 2019. – ¹. 1. –
P. 115–126.
Ëèòüå ëîïàòêè ãàçîâîé òóðáèíû èç ñóïåðñïëàâà íà íèêåëåâîé îñíîâå MAR-M247 ñîïðîâîæäà-
åòñÿ îáðàçîâàíèåì ìíîæåñòâåííûõ êàðáèäíûõ âûäåëåíèé â ðåçóëüòàòå çàòâåðäåâàíèÿ. Ìèêðî-
ñòðóêòóðó êàðáèäà èçó÷àëè ñ ïîìîùüþ ñêàíèðóþùåé ýëåêòðîííîé ìèêðîñêîïèè è ýíåðãå-
òè÷åñêîãî ñïåêòðàëüíîãî àíàëèçà. Ïîñòðîåíà êîíå÷íîýëåìåíòíàÿ ìîäåëü ëîïàòêè ñî ñëó÷àé-
íûì êàðáèäíûì âûäåëåíèåì íà îñíîâå ïðîãðàììíîãî îáåñïå÷åíèÿ ANSYS, âûïîëíåíà îöåíêà
íàïðÿæåííî-äåôîðìèðîâàííîãî ñîñòîÿíèÿ. Óñëîâèÿ ýêñïëóàòàöèè ëîïàòêè ðåàëèçîâàëè íà ýêñ-
ïåðèìåíòàëüíîé óñòàíîâêå äëÿ êîìïëåêñíîãî èñïûòàíèÿ íà âèáðàöèþ è ðàñòÿæåíèå, íàïðÿ-
æåíèÿ èçìåðÿëè ñ ïîìîùüþ òåíçîäàò÷èêîâ, ðàçìåùàåìûõ íà ðàçëè÷íûõ ó÷àñòêàõ ëîïàòêè.
Ïðîâåäåíî ñðàâíåíèå ýêâèâàëåíòíûõ íàïðÿæåíèé ïî Ìèçåñó, ïîëó÷åííûõ ïðè ìîäåëèðîâàíèè
è ýêñïåðèìåíòàëüíî. Óñòàíîâëåíî, ÷òî èõ ìîæíî èñïîëüçîâàòü äëÿ îöåíêè óñòàëîñòíîé äîëãî-
âå÷íîñòè ëîïàòêè íà îñíîâàíèè ïîëó÷åííûõ êðèâûõ óñòàëîñòè è çàêîíà íàêîïëåíèÿ ïîâðåæ-
äåíèé Ïàëìãðåíà–Ìàéëåðà. Îíè ñëóæàò òàêæå îñíîâîé ïîñòðîåíèÿ çàâèñèìîñòè ìåæäó îáúåì-
íûì ñîîòíîøåíèåì âêëþ÷åíèé â ëîïàòêå è åå óñòàëîñòíîé äîëãîâå÷íîñòüþ. Äàííûå, ïîëó-
÷åííûå ïðè êîìíàòíîé òåìïåðàòóðå, ìîãóò áûòü ýêñòðàïîëèðîâàíû íà ïîâûøåííûå, ÷òî
îáåñïå÷èâàåò áîëåå äîñòîâåðíûé ïðîãíîç óñòàëîñòè è óñòàëîñòíîé äîëãîâå÷íîñòè ëîïàòêè èç
ñóïåðñïëàâà ïðè ïîëçó÷åñòè.
Õóàíã Ñ. Õ., Âó É., Æàî Ç. Ä., Êñèà Êñ. Ñ. Ïîñòðîåíèå è âåðèôèêàöèÿ îïðåäåëÿþùåé ìîäåëè
äåôîðìèðîâàíèÿ ÷èñòîé ìåäè ïðè ïîâûøåííûõ òåìïåðàòóðàõ // Ïðîáëåìè ì³öíîñò³. – 2019. –
¹. 1. – P. 127–136.
Èçó÷åíî äåôîðìàöèîííîå ïîâåäåíèå ÷èñòîé ìåäè ïðè èñïûòàíèè ãîðÿ÷èõ ïðîá íà ñæàòèå â
äèàïàçîíå òåìïåðàòóð 773–1173 Ê è ñêîðîñòè äåôîðìàöèè 0 001 10. .� �ñ 1, ïîñòðîåíû ñîîòâåò-
ñòâóþùèå êðèâûå íàïðÿæåíèÿ ïëàñòè÷åñêîãî òå÷åíèÿ. Ðàçðàáîòàí íîâûé ìåòîä ðàñ÷åòà êðè-
Ðåôåðàòû
200 ISSN 0556-171X. Ïðîáëåìè ì³öíîñò³, 2019, ¹ 1
òè÷åñêîãî íàïðÿæåíèÿ è íàïðÿæåíèÿ íàñûùåíèÿ, ïðåäñòàâëåí êîëè÷åñòâåííûé àíàëèç äåôîð-
ìàöèîííîãî óïðî÷íåíèÿ è äèíàìè÷åñêîãî ðàçóïðî÷íåíèÿ, ïîñòðîåíà òðåõñòóïåí÷àòàÿ îïðå-
äåëÿþùàÿ ìîäåëü ïðîãíîçèðîâàíèÿ íàïðÿæåíèÿ ïëàñòè÷åñêîãî òå÷åíèÿ ÷èñòîé ìåäè. Êàê
ïîêàçûâàåò ñðàâíåíèå ïðîãíîçèðóåìîãî è èçìåðåííîãî íàïðÿæåíèé ïëàñòè÷åñêîãî òå÷åíèÿ, ñ
ïîìîùüþ òàêîé ìîäåëè ìîæíî òî÷íî îïèñàòü ãîðÿ÷åå äåôîðìèðîâàíèå ÷èñòîé ìåäè ïðè
äèíàìè÷åñêîì âîçâðàòå è/èëè ðåêðèñòàëëèçàöèè. Âûïîëíåíî ÷èñëåííîå ìîäåëèðîâàíèå ïðî-
öåññà âûñàäêè ïóòåì ðåàëèçàöèè äàííîé ìîäåëè â ðàìêàõ êîììåð÷åñêîãî ïðîãðàììíîãî
îáåñïå÷åíèÿ. Ìîäåëü âåñüìà ïåðñïåêòèâíà è ìîæåò èñïîëüçîâàòüñÿ äëÿ ïîâûøåíèÿ ýôôåêòèâ-
íîñòè ïðîöåññà ãîðÿ÷åé êîâêè äåòàëåé èç ÷èñòîé ìåäè.
Øåíã Ë. Þ., Ëàé ×., Êñó Ç., Äæèàî Äæ. Âëèÿíèå òåêñòóðû ïîâåðõíîñòè íà ëàçåðíîå
ñîåäèíåíèå àðìèðîâàííîãî óãëåðîäíûì âîëîêíîì ðåàêòîïëàñòà è íåðæàâåþùåé ñòàëè //
Ïðîáëåìè ì³öíîñò³. – 2019. – ¹. 1. – P. 137–145.
Ðåàêòîïëàñò, àðìèðîâàííûé óãëåðîäíûì âîëîêíîì, è íåðæàâåþùóþ ñòàëü ñîåäèíÿëè ñ ïîìî-
ùüþ âîëîêîííîãî ëàçåðà. Èçó÷åíî âëèÿíèå òåêñòóðû ïîâåðõíîñòè íà êà÷åñòâî ñîåäèíåíèÿ.
Ïîêàçàíî, ÷òî öàðàïàíèå àáðàçèâíîé áóìàãîé ïîâåðõíîñòè íåðæàâåþùåé ñòàëè âûçûâàåò
ïîÿâëåíèå îòäåëüíûõ íàïðàâëåííûõ áîðîçäîê, ïåðåìåæàþùèõñÿ âûñòóïàìè. Ëàçåðíàÿ îáðà-
áîòêà òåêñòóðû ïðèâîäèò ê âîçíèêíîâåíèþ ðàâíîìåðíî ðàñïðåäåëåííûõ ìèêðîëóíîê è âûñòó-
ïîâ, îáðàçóþùèõ ïðÿìîóãîëüíóþ ÿ÷åèñòóþ ñòðóêòóðó. Òàêàÿ îáðàáîòêà ìîæåò óëó÷øàòü òåêó-
÷åñòü ïîëèôåíèëåíñóëüôèòíîãî ðàñïëàâà ïðè ëàçåðíîì ñîåäèíåíèè. Ëàçåðíîå ñêàíèðîâàíèå
ïîâåðõíîñòè íåðæàâåþùåé ñòàëè ïðèâîäèò ê îáðàçîâàíèþ çîí ïðîïëàâëåíèÿ è òåðìè÷åñêîãî
âëèÿíèÿ.  çîíå òåðìè÷åñêîãî âëèÿíèÿ èãîëü÷àòûé ôåððèò ðàñïîëàãàåòñÿ âäîëü ãðàíèöû, òîãäà
êàê â çîíå ïðîïëàâëåíèÿ îí îáðàçóåò ñêåëåòíóþ ñòðóêòóðó è âûäåëÿåò àóñòåíèò â ÿ÷åèñòóþ
ñòðóêòóðó. Ìîäèôèêàöèÿ òåêñòóðû ïîâåðõíîñòè óâåëè÷èâàåò ïðî÷íîñòü ñöåïëåíèÿ ìåæäó
íåðæàâåþùåé ñòàëüþ è ïîëèôåíèëåíñóëüôèòîì çà ñ÷åò ðàñøèðåíèÿ ïëîùàäè ïîâåðõíîñòè
êîíòàêòà âñëåäñòâèå îáðàçîâàíèÿ áîðîçäîê, ìèêðîëóíîê è âûñòóïîâ. Ñîåäèíåíèå íåðæàâå-
þùàÿ ñòàëü–ðåàêòîïëàñò ïîñëå ëàçåðíîé îáðàáîòêè òåêñòóðû ïî ñðàâíåíèþ ñ öàðàïàíèåì
îáëàäàåò áîëåå âûñîêèì ñîïðîòèâëåíèåì ñäâèãó.
Õåð Ø.-×., ×ó Â.-Á. Ïîñòðîåíèå ïðîôèëÿ ïîâåðõíîñòè è äåôåêòîñêîïèÿ êîìïîçèöèîííîé
ñòðóêòóðû // Ïðîáëåìè ì³öíîñò³. – 2019. – ¹. 1. – P. 146–153.
Íåðàçðóøàþùèé ìåòîä îöåíêè ñâîéñòâ ìàòåðèàëà è öåëîñòíîñòè ñòðóêòóðû îñíîâàí íà
óëüòðàçâóêîâîì ñêàíèðîâàíèè, ñáîðå è îáðàáîòêå èñõîäíûõ äàííûõ, ïîñòóïàþùèõ îò óëüòðà-
çâóêîâîãî äàò÷èêà. Êîììåð÷åñêîå ïðîãðàììíîå îáåñïå÷åíèå LabVLEW, ðàçðàáîòàííîå National
Instruments Inc., ïðåäíàçíà÷åíî äëÿ îáðàáîòêè óëüòðàçâóêîâûõ èçîáðàæåíèé. Ñîçäàíà óëüòðà-
çâóêîâàÿ ñèñòåìà ñêàíèðîâàíèÿ èçîáðàæåíèÿ Ñ-scan. Ñèñòåìà îáëàäàåò ôóíêöèåé ïîñòðîåíèÿ
òðåõìåðíîãî ïðîôèëÿ ïîâåðõíîñòè è âûÿâëåíèÿ äåôåêòîâ âíóòðè êîìïîçèöèîííîé ñòðóêòóðû.
Ïðîâåðêó äîñòîâåðíîñòè ìåòîäèêè íåðàçðóøàþùåãî êîíòðîëÿ è îöåíêó ãåîìåòðèè âûïîëíÿëè
ýêñïåðèìåíòàëüíî íà àëþìèíèåâîé ïëàñòèíå ñ íåáîëüøèìè îòâåðñòèÿìè è êîìïîçèöèîííîé
ñòðóêòóðå ñ äåôåêòîì ðàññëîåíèÿ.
Õó Êñ. Ë., Ëèó É. Äæ., Õóàíã ×. Êñ., Âàíã Ê. É. Âëèÿíèå äåôîðìàöèè ïðåäâàðèòåëüíîãî
êðó÷åíèÿ íà ìàëîöèêëîâóþ óñòàëîñòü êîíñòðóêöèîííîé ñòàëè Q345B // Ïðîáëåìè ì³öíîñò³. –
2019. – ¹. 1. – P. 154–162.
Èçó÷åíî âëèÿíèå äåôîðìàöèè ïðåäâàðèòåëüíîãî êðó÷åíèÿ íà ìàëîöèêëîâóþ óñòàëîñòü ñòàëè
Q345B. Âíà÷àëå îáðàçöû ñêðó÷èâàëè íà 0, 180 è 360�, çàòåì ìåòîäîì îñåñèììåòðè÷íîé
äåôîðìàöèè îïðåäåëÿëè ìàëîöèêëîâóþ óñòàëîñòü ñòàëè Q345B â äèàïàçîíå äåôîðìàöèé
0.3–0.8%. Ïîëó÷åíû è ïðîàíàëèçèðîâàíû õàðàêòåðèñòèêà öèêëè÷åñêèõ èçìåíåíèé, çàâèñè-
ìîñòü öèêëè÷åñêîãî èçìåíåíèÿ íàïðÿæåíèÿ îò äåôîðìàöèè, çàâèñèìîñòü äåôîðìàöèÿ–äîëãî-
âå÷íîñòü, ìîäåëü ïðîãíîçèðîâàíèÿ óñòàëîñòíîé äîëãîâå÷íîñòè è ñåéñìîñòîéêîñòü ïðè ðàçëè÷-
íûõ óãëàõ êðó÷åíèÿ. Ïîêàçàíî, ÷òî êðèâàÿ äåôîðìàöèÿ – äîëãîâå÷íîñòü èäåò âíèç è îïèñû-
âàåòñÿ ñòåïåííîé ôóíêöèåé. Óñòàëîñòíàÿ äîëãîâå÷íîñòü ñíèæàåòñÿ ñ óâåëè÷åíèåì äåôîðìàöèè
ïðåäâàðèòåëüíîãî êðó÷åíèÿ ïðè ïîñòîÿííîì óðîâíå ïîñëåäíåé. Õàðàêòåðèñòèêà öèêëè÷åñêèõ
èçìåíåíèé âàðüèðîâàëà îò öèêëè÷åñêîãî óïðî÷íåíèÿ äî öèêëè÷åñêîãî ðàçóïðî÷íåíèÿ ïðè
êðó÷åíèè, ñêîðîñòü öèêëè÷åñêîãî óïðî÷íåíèÿ âîçðàñòàëà ëèíåéíî ñ ïîâûøåíèåì àìïëèòóäû
Ðåôåðàòû
ISSN 0556-171X. Ïðîáëåìè ì³öíîñò³, 2019, ¹ 1 201
äåôîðìàöèè. Ïàðàìåòðû çàâèñèìîñòè Êîôôèíà–Ìýíñîíà ïîäòâåðæäàþòñÿ ýêñïåðèìåíòàëü-
íûìè äàííûìè. Ïîñëå òåðìîîáðàáîòêè ñåéñìîñòîéêîñòü ìàòåðèàëà óëó÷øàåòñÿ, ïðè ýòîì
äåôîðìàöèÿ ïðåäâàðèòåëüíîãî êðó÷åíèÿ ñóùåñòâåííî ñíèæàåò åå. Ýëåêòðîííî-ìèêðîñêîïè-
÷åñêîå èññëåäîâàíèå óñòàëîñòíîãî ðàçðóøåíèÿ âûÿâèëî çàðîæäåíèå óñòàëîñòíîé òðåùèíû íà
ïîâåðõíîñòè îáðàçöà. Ðàñòóùàÿ òðåùèíà îòêëîíÿëàñü îò ñâîåãî íàïðàâëåíèÿ, ïëàñòè÷íîñòü
ìàòåðèàëà ñíèæàëàñü â ðåçóëüòàòå äåôîðìàöèè ïðåäâàðèòåëüíîãî êðó÷åíèÿ.
Ãó Ë., Âàíã Äæ., Ëóàí Ñ. Á., Ëè Êñ. Þ. Âëèÿíèå êîððîçèîííîé ñðåäû, ñîäåðæàùåé ñåðî-
âîäîðîä, íà ïðî÷íîñòü ïðè ðàñòÿæåíèè è âÿçêîñòü ðàçðóøåíèÿ òðóáîïðîâîäíîé ñòàëè Õ80 //
Ïðîáëåìè ì³öíîñò³. – 2019. – ¹. 1. – P. 163–174.
Èññëåäîâàíû ïðî÷íîñòü ïðè ðàñòÿæåíèè è âÿçêîñòü ðàçðóøåíèÿ òðóáîïðîâîäíîé ñòàëè Õ80 â
ñðåäå, õàðàêòåðíîé äëÿ íåôòåõèìè÷åñêèõ ïðîöåññîâ. Îáðàçöû ñòàëè ïîäâåðãàëè äëèòåëüíîìó
âîçäåéñòâèþ âîçäóõà è êîððîçèîííîé ñðåäû, ñîäåðæàùåé ñåðîâîäîðîä, à çàòåì èñïûòûâàëè íà
ðàñòÿæåíèå è òðåùèíîñòîéêîñòü ïðè òðåõòî÷å÷íîì èçãèáå ñ ïîñòðîåíèåì êðèâûõ íàïðÿæåíèå–
äåôîðìàöèÿ è ðàñêðûòèå òðåùèíû â åå âåðøèíå–äëèíà òðåùèíû. Âûïîëíåí àíàëèç âëèÿíèÿ
ñåðîâîäîðîäíîé êîððîçèè íà äèàãðàììó ðîñòà òðåùèíû, âÿçêîñòü ðàçðóøåíèÿ è ðàáîòó ïëàñòè-
÷åñêîé äåôîðìàöèè. Àíàëèç ðåçóëüòàòîâ, ïîëó÷åííûõ íà îáðàçöàõ â èñõîäíîì ñîñòîÿíèè è
ïîäâåðãíóòûõ âîçäåéñòâèþ ñåðîâîäîðîäíîé ñðåäû, ïîêàçàë, ÷òî äàííûé ôàêòîð íåçíà÷èòåëüíî
ñíèæàåò ïðåäåë ïðî÷íîñòè ñòàëè ïðè ðàñòÿæåíèè, îäíàêî ïðèâîäèò ê ñóùåñòâåííîìó óäëèíå-
íèþ, à òàêæå ê óìåíüøåíèþ ñå÷åíèÿ îáðàçöîâ ïðè ðàçðóøåíèè è âÿçêîñòè ðàçðóøåíèÿ. Íà
ñòàäèè óñòîé÷èâîãî ðîñòà òðåùèíû ðàñêðûòèå åå âåðøèíû ïðè ñòðàãèâàíèè íà âîçäóõå
ñîñòàâëÿëî 0,732 ìì, ÷òî áîëåå ÷åì âäâîå âûøå, ÷åì â êîððîçèîííîé ñðåäå (0,364 ìì). Ïðè
ýòîì ðàáîòà ïëàñòè÷åñêîé äåôîðìàöèè, íåîáõîäèìàÿ äëÿ ïðîäâèæåíèÿ òðåùèíû íà îäíó è òó
æå äëèíó �a, ïðè âîçäåéñòâèè âîçäóõà â 2,29 ðàçà âûøå, ÷åì êîððîçèîííîé ñðåäû. Ïðè
òðàíñïîðòèðîâêå ïðèðîäíîãî ãàçà ïî òðóáîïðîâîäàì ñëåäóåò èçáåãàòü êîððîçèîííîãî âîçäåé-
ñòâèÿ ñåðîâîäîðîäà, ñóùåñòâåííî ñíèæàþùåãî âÿçêîñòü ðàçðóøåíèÿ òðóáîïðîâîäíîé ñòàëè.
Èñìàèë Àëè. À., Àëü Òàìèìè À. Îïòèìèçàöèÿ ïëàíèðîâàíèÿ óñêîðåííûõ ðåñóðñíûõ èñïûòàíèé
ïðè ïîñòîÿííîì íàïðÿæåíèè ñ öåíçóðèðîâàíèåì äàííûõ ñ îáðàòíûì ðàñïðåäåëåíèåì òèïà
Âåéáóëëà // Ïðîáëåìè ì³öíîñò³. – 2019. – ¹. 1. – P. 175–186.
Ïðåäëîæåíà ìîäåëü óñêîðåííûõ ðåñóðñíûõ èñïûòàíèé ïðè ïîñòîÿííîì íàïðÿæåíèè ñ èñïîëü-
çîâàíèåì äàííûõ, ïîäâåðãíóòûõ öåíçóðèðîâàíèþ òèïà II ñ îáðàòíûì ðàñïðåäåëåíèåì Âåé-
áóëëà. Ñ ïîìîùüþ ìåòîäà ìàêñèìàëüíîãî ïðàâäîïîäîáèÿ îïðåäåëåíû ïàðàìåòðû ðàñïðåäåëå-
íèÿ è êîýôôèöèåíòà óñêîðåíèÿ. Âûïîëíåíû îöåíêà ñîîòâåòñòâóþùåãî äîâåðèòåëüíîãî èíòåð-
âàëà è îïòèìèçàöèÿ óñêîðåííûõ ðåñóðñíûõ èñïûòàíèé ïðè ïîñòîÿííîì íàïðÿæåíèè ïî D-êðè-
òåðèþ îïòèìàëüíîñòè. Ïðè ýòîì âûáîðêà ÷àñòè ïðîãðàììû íàãðóæåíèÿ äëÿ óñêîðåííûõ
ðåñóðñíûõ èñïûòàíèé îïòèìèçèðóåòñÿ òàêèì îáðàçîì, ÷òîáû ìèíèìèçèðîâàòü îáîáùåííóþ
àñèìïòîòè÷åñêóþ äèñïåðñèþ ïîêàçàòåëåé ìàêñèìàëüíîé âåðîÿòíîñòè. Ðàáîòîñïîñîáíîñòü ïðåä-
ëîæåííîãî ïîäõîäà ïîêàçàíà íà òåñòîâîì ïðèìåðå.
Ðàôè Ì. Ì. Àíàëèòèòè÷åñêèé ðàñ÷åò àäãåçèîííûõ ñâîéñòâ æåëåçîáåòîííûõ èçäåëèé ñ äîáàâ-
êàìè ïîâòîðíî óòèëèçèðîâàííîãî áåòîíà // Ïðîáëåìè ì³öíîñò³. – 2019. – ¹. 1. – P. 187–196.
Äëÿ æåëåçîáåòîííûõ èçäåëèé âûïîëíåí àíàëèòè÷åñêèé ðàñ÷åò çàâèñèìîñòè àäãåçèîííûõ íàïðÿ-
æåíèé íà ñòûêå ñòàëüíûõ àðìàòóðíûõ ñòåðæíåé ñ ìàòðèöåé èç ïåðåðàáîòàííîãî áåòîíà îò
âåëè÷èíû ïðîñêàëüçûâàíèÿ ìåæäó íèìè. Ïðè ðàñ÷åòå èñïîëüçîâàëè áîëüøîé îáúåì ðåçóëü-
òàòîâ àäãåçèîííûõ èñïûòàíèé íà ðàñòÿæåíèå êîíöåíòðè÷åñêèõ îáðàçöîâ, ïîëó÷åííûõ ðàçíûìè
èññëåäîâàòåëÿìè, â òîì ÷èñëå è àâòîðîì äàííîé ðàáîòû. Ïðåäëîæåíî îáîáùåííîå óðàâíåíèå
äëÿ îïèñàíèÿ çàâèñèìîñòè àäãåçèîííûõ íàïðÿæåíèé íà ñòûêå ñòàëüíûõ àðìàòóðíûõ ñòåðæíåé
ñ ìàòðèöåé èç ïåðåðàáîòàííîãî áåòîíà îò âåëè÷èíû ïðîñêàëüçûâàíèÿ. Ïðè ýòîì âîñõîäÿùàÿ
âåòâü óêàçàííîé çàâèñèìîñòè ìîæåò áûòü îïèñàíà èçâåñòíûì óðàâíåíèåì, òîãäà êàê äëÿ
îïèñàíèÿ íèñõîäÿùåé âåòâè ïðåäëîæåíà ìîäèôèöèðîâàííàÿ ôîðìà ýòîãî óðàâíåíèÿ. Ðåçóëü-
òàòû ðàñ÷åòà, ïîëó÷åííûå ñ ïîìîùüþ ìîäèôèöèðîâàííîãî óðàâíåíèÿ, õîðîøî ñîãëàñóþòñÿ ñ
ýêñïåðèìåíòàëüíûìè, ïîëó÷åííûìè ðàçíûìè àâòîðàìè.
Ðåôåðàòû
202 ISSN 0556-171X. Ïðîáëåìè ì³öíîñò³, 2019, ¹ 1
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/HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke. Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 5.0 i kasnijim verzijama.)
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| id | nasplib_isofts_kiev_ua-123456789-188317 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0556-171X |
| language | Russian |
| last_indexed | 2025-12-07T15:52:33Z |
| publishDate | 2019 |
| publisher | Інститут проблем міцності ім. Г.С. Писаренко НАН України |
| record_format | dspace |
| spelling | 2023-02-22T19:04:36Z 2023-02-22T19:04:36Z 2019 Рефераты // Проблеми міцності. — 2019. — № 1. — С. 197-202. — рос. 0556-171X https://nasplib.isofts.kiev.ua/handle/123456789/188317 ru Інститут проблем міцності ім. Г.С. Писаренко НАН України Проблемы прочности Рефераты Article published earlier |
| spellingShingle | Рефераты |
| title | Рефераты |
| title_full | Рефераты |
| title_fullStr | Рефераты |
| title_full_unstemmed | Рефераты |
| title_short | Рефераты |
| title_sort | рефераты |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/188317 |