RUPTURE DETERMINATION DEVICE AND COLLISION SIMULATION DEVICE

摘要

PPROBLEM TO BE SOLVED: To provide a technology capable of determining highly accurately rupture of a spot weld zone by using a simple model. PSOLUTION: This rupture determination means is equipped with: a storage means for storing a critical stress when a boundary part between a nugget and a metal plate is ruptured; a condition input means for inputting an axial force, a bending moment and a shearing force acting on the nugget center; a shearing stress calculation means for calculating the maximum shearing stress acting on the boundary part from the input axial force and bending moment; a tensile stress calculation means for calculating the maximum tensile stress acting on the boundary part based on the input shearing force; and a determination means for determining rupture of the spot weld zone based on the calculated maximum shearing stress and maximum tensile stress and the critical stress stored in the storage means. PCOPYRIGHT: (C)2007,JPO&INPIT