公开(公告)号：US10740513B2

公开(公告)日：2020-08-11

申请号：US14136783

申请日：2013-12-20

Applicant: Dassault Systèmes Simulia Corp.

Inventor： Harrington Hunter Harkness

IPC: G06F30/23

Abstract: An embodiment of the invention involves increasing the penalty stiffness within a finite element simulation increment, which is more accurate because it avoids following a solution path with significant non-physical penetrations. An embodiment of the present invention begins by determining a first value of a parameter used by a finite element simulation of a load increment. Next, a first solution of the finite element simulation is determined by performing Newton iterations using the first value of the parameter until a first convergence check is satisfied. Then, a second value the parameter is determined wherein the second value of the parameter is unequal to the first value of the parameter. Finally, a second solution of the finite element simulation is determined by continuing the Newton iterations using the second value of the parameter until a second convergence check is satisfied, the first convergence check being different than the second convergence check.

公开(公告)号：US20150178423A1

公开(公告)日：2015-06-25

申请号：US14136783

申请日：2013-12-20

Applicant: Dassault Systèmes Simulia Corp.

Inventor： Harrington Hunter Harkness

IPC: G06F17/50

Abstract: An embodiment of the invention involves increasing the penalty stiffness within a finite element simulation increment, which is more accurate because it avoids following a solution path with significant non-physical penetrations. An embodiment of the present invention begins by determining a first value of a parameter used by a finite element simulation of a load increment. Next, a first solution of the finite element simulation is determined by performing Newton iterations using the first value of the parameter until a first convergence check is satisfied. Then, a second value the parameter is determined wherein the second value of the parameter is unequal to the first value of the parameter. Finally, a second solution of the finite element simulation is determined by continuing the Newton iterations using the second value of the parameter until a second convergence check is satisfied, the first convergence check being different than the second convergence check.

Abstract translation: 本发明的一个实施例涉及增加有限元模拟增量内的惩罚刚度，其更准确，因为它避免了遵循具有显着的非物理穿透的解路径。 本发明的实施例通过确定由负载增量的有限元模拟使用的参数的第一值开始。 接下来，通过使用参数的第一值执行牛顿迭代来确定有限元模拟的第一解，直到满足第一收敛检验。 然后，确定参数的第二值，其中参数的第二值不等于参数的第一个值。 最后，通过使用参数的第二值继续牛顿迭代来确定有限元模拟的第二解，直到满足第二收敛检验，第一收敛检验不同于第二收敛检验。