LS-DYNA无法计算下去

Memory required to process keyword : 72374628
forrtl: severe (157): Program Exception - access violation
Image PC Routine Line Source
ls971.exe 0000000001A5F3FA DYNAI 2172 dyn12.F
ls971.exe 00000000004D1730 OVERLY 136 dyn0.F
ls971.exe 0000000002942439 LSINPUT 2704 dynm.F
ls971.exe 00000000029420FC LSDYNA1 2381 dynm.F
ls971.exe 0000000002942B78 MAIN__ 3467 dynm.F
ls971.exe 000000000359E264 Unknown Unknown Unknown
ls971.exe 000000000356B70F Unknown Unknown Unknown
kernel32.dll 0000000078D2964C Unknown Unknown Unknown
请按任意键继续. . .
在计算过程中没有出现erro，只出现上面情况，是什么原因？