Express-analysis when modeling the stress-strain state of stamp rigging elements

• Main Author: Демина, Н. А.
• Format: Article
• Language: Russian
• Published: Journal of Mechanical Engineering 2015
• Subjects: mathematical model; parametric model; express-model; operation of separation of sheet metal forming; matrix; stress-strain state; balance of displacements; УДК 539.3; математическая модель; параметрическая модель; экспресс-модель; разделительная операция листовой штамповки; матрица; напряженно-деформированное состояние; баланс перемещений; математична модель; параметрична модель; експрес-модель; розділова операція листової штамповки; матриця; напружено-деформований стан; баланс переміщень
• Online Access: https://journals.uran.ua/jme/article/view/40259

Proposed is approach, which is based on application of express-models for numerical simulation of stress-strain state of stamp rigging elements. Using these models, a study was conducted many of stamp rigging elements. Interest of considerable is the question of quality pre-Express-analysis of the influence of some parameters on the behavior of elements of investigated technological system. From this point of view is relevant and important the private problem determination of the contribution of the elastic displacements of points of the matrix dividing of stamp in the overall balance of displacements in area between the cutting edges using the Express-models. The simplified computational models of matrix were used for this purpose. The analysis of distributions of displacements, stresses and integral dependency of the displacement and stress points of the cutting edges of matrix of dividing stamp serves as the basis for the following main conclusions. The equivalent stress in the area of the cutting edge of the matrix has level, which slightly changes by changing on their height. The strain state of matrices depends significantly on their height. At this can be identified tentatively the matrix: are low (high up to the one-third of inner diameter); of medium height - one-third to two diameters; are high - the higher of the two diameters. Increase in all cross-sections is characteristically for low matrices. Narrowing in the area of the cutting edges and increase in the middle part and closer to the basis are observed in matrices of medium height. The characteristic feature for high matrices is wavelike character of the increase cross-sections at different heights when moving along the forming in the area of the cutting edge, as well as approximately uniform decrease data cross-sections in the direction of action of the forging force.