FIELD: data processing.
SUBSTANCE: invention relates to a device for determining destruction, to a program for determining destruction and to a method for this. Device comprises a storage module which stores input information of elements, a module for extracting elements, which extracts elements included in a heat-affected zone formed around a spot-welded section of steel material, module for formation of reference values of ultimate molding, which forms reference value of limit molding in accordance with property of material and thickness of sheet in zone of thermal influence, based on information of reference values of limit molding, module for formation of values of ultimate molding in the zone of thermal influence, which uses tensile strength of steel material in order to change the reference value of limiting molding, to predict the value of limiting molding within the size of element for element, included in the zone of thermal influence, and form a value of limiting molding in the zone of thermal influence, analysis module, which performs analysis of deformation by using input information and outputs information of deformation zones, which includes deformation of each element included in the zone of thermal influence, module for determining the main deformation, which determines the maximum main deformation and the minimum main deformation of each element, and the destruction determination module, which determines whether or not each element must disintegrate in the analysis model, based on the maximum main deformation and the minimum principal deformation of each element for which the main deformation is determined, and the limit molding line in the thermal impact zone indicated by the limit molding value in the thermal impact zone.
EFFECT: possibility of accurate prediction of destruction of thermal effect zone irrespective of element size in calculation of deformation zones using FEM, when element including multiple zones of thermal influence, for example, vehicle, such as car, is deformed during collision.
9 cl, 15 dwg
