ls-dyna 模拟三维金属切削 求助。模拟结果总是以负体积结束。？
第一次做三维金属切削模拟，用的dyna，花去将近一个星期，查找各种资料做出了一个初步的模型。可是每次计算之后总是算到2.3步就会出现负体积报错结束。恳请老师们帮我看一下K文件，是材料定义方面出了问题还是card设置有问题。。。
*KEYWORD 999999999 NCPU= 12
*TITLE
BY TPL OF SWJTU
*CONTROL_TERMINATION
$$ ENDTIM ENDCYC DTMIN ENDENG ENDMAS
0.015
*CONTROL_TIMESTEP
$$ DTINIT TSSFAC ISDO TSLIMT DT2MS LCTM ERODE MSIST
0.0 0.6 0 0.0-1.000E-09 0 0 0
0.0 0 0
*CONTROL_SHELL
$$ WRPANG ESORT IRNXX ISTUPD THEORY BWC MITER PROJ
20.0 1 -1 1 2 2 1 0
1.0 0 0 1 0 0 0
*CONTROL_HOURGLASS
$$ IHQ QH
5 0.1
*CONTROL_SOLID
$$ ESORT FMATRX NIPTETS SWLOCL
1
$$ PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PM9 PM10
*CONTROL_BULK_VISCOSITY
$$ Q1 Q2 IBQ
1.5 0.06 1
*CONTROL_CONTACT
$$ SLSFAC RWPNAL ISLCHK SHLTHK PENOPT THKCHG ORIEN ENMASS
0.1 0.0 2 0 1 1 1 0
$$ USRSTR USRFRC NSBCS INTERM XPENE SSTHK ECDT TIEDPRJ
0 0 10 0 4.0 0 0 0
$$ SFRIC DFRIC EDC INTVFC TH TH_SF PEN_SF
0.0 0.0 0.0 0.0 0.0 0.0 0.0
$$ IGNORE FRCENG SKIPRWG OUTSEG SPOTSTP SPOTDEL SPOTHIN
0 0 0 0 0 0 0.0
$$ ISYM NSEROD RWGAPS RWGDTH RWKSF ICOV SWRADF ITHOFF
0 0 1 0.0 0.0 0 0.0 0
$$ SHLEDG PSTIFF ITHCNT TDCNOF FTALL SHLTRW
0
*CONTROL_ENERGY
$$ HGEN RWEN SLNTEN RYLEN
2 2 2 2
$$DATABASE_OPTION -- Control Cards for ASCII output
*DATABASE_DEFORC
1.0000E-04 3
*DATABASE_ELOUT
1.0000E-04 3
*DATABASE_GLSTAT
1.0000E-04 3
*DATABASE_MATSUM
1.0000E-04 3
*DATABASE_NODOUT
1.0000E-04 3
*DATABASE_RCFORC
1.0000E-04 3
*DATABASE_SLEOUT
1.0000E-04 3
*DATABASE_BINARY_D3PLOT
$$ DT/CYCL LCDT BEAM NPLTC
1.0000E-04
0
*DATABASE_BINARY_D3THDT
$$ DT/CYCL LCID
1.0000E-04
*DATABASE_BINARY_D3DUMP
$$ DT/CYCL
100000.0
*DATABASE_BINARY_RUNRSF
$$ DT/CYCL LCDT/NR
100000.0
易炜 
