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案例:LS-DYNA隐式求解-静力分析

10月前浏览466

梁静力分析-WB下做-加入相关关键字即可

关键字:

*KEYWORD

$

*TITLE

$*DATABASE_FORMAT

$   1IFORM  2IBINARY

$         0

*node

*element

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

$时间控制、隐式控制、非线性控制等

*CONTROL_BULK_VISCOSITY

$人工体积粘性

       0.0       0.0        -2         0

*CONTROL_IMPLICIT_GENERAL

$0为显示分析,1为隐式分析,0.5为隐式分析的时间步

         1       0.5         0         0         0         0         0         0

*CONTROL_IMPLICIT_SOLUTION

$1为线性分析,2为非线性分析BFGS updata

         2         0         0       0.0       0.0       0.0       0.0       0.0

*CONTROL_IMPLICIT_SOLVER

$4为默认的SMP并行求解矩阵

         4         0         0         0         0       0.0         0       0.0

*CONTROL_TERMINATION

$结束时间

       1.0         0       0.0       0.0       0.0

$*CONTROL_TIMESTEP

$         0       0.9         0         0         0         1         1         0

$

$

$ ==============

$ DATABASE cards

$ ==============

$输出

*DATABASE_BINARY_D3PLOT

    1.0E-2         0         0         0

*DATABASE_BINARY_D3THDT

    1.0E-2         0

$

*DATABASE_HISTORY_NODE

$93号节点定义为输出到history及ascii文件;

        2

*DATABASE_EXTENT_BINARY

$没这个输出就没应力!

         0         0         3         1         0         0         0         0

         0         0         4         0         0         0

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

*SECTION_BEAM

$单元、材料、part

$   1SECID   2ELFORM     3SHRF  4QR/IRID      5CST    6SCOOR      7NSM

         1         1         1         2         1                    

$     1TS1      2TS2      3TT1      4TT2    5NSLOC    6NTLOC

         6         6         0         0         0         0

$

*MAT_ELASTIC

$     1MID       2RO        3E       4PR       5DA       6DB        7K

         1      7.85    2e+008       0.3                              

$

*PART

$  HEADING

Line Body

$     1PID    2SECID      3MID    4EOSID     5HGID     6GRAV   7ADPORT     8TMID

         1         1         1         0         0

*DEFINE_CURVE

$    1LCID     2SIDR      3SFA      4SFO     5OFFA     6OFFO   7DATTYP

         1                                                            

$                 1A                  2O

                   0              1e+011

                   1              1e+011

                  10              1e+011

*DEFINE_CURVE

$载荷曲线用lid2;WB中定义;

$    1LCID     2SIDR      3SFA      4SFO     5OFFA     6OFFO   7DATTYP

         2                                                            

$                 1A                  2O

                   0              100000

                   1              100000

                  10              100000

*CONTROL_ACCURACY

$1为打开双精度,4为实体壳体都支持;

$     1OSU      2INN   3PIDOSU

         1         4

*SET_NODE_LIST

$约束

$     1SID      2DA1      3DA2      4DA3      5DA4

         1                                        

$    1NID1     2NID2     3NID3     4NID4     5NID5     6NID6     7NID7     8NID8

         1

$                        

*BOUNDARY_SPC_SET

$    1NSID      2CID     3DOFX     4DOFY     5DOFZ    6DOFRX    7DOFRY    8DOFRZ

         1         0         1         1         1         1         1         1

 

*LOAD_NODE_POINT

$节点载荷,第一个2为节点号2,如果用节点组,就是节点组号

$      1ID      2DOF     3LCID       4SF      5CID       6M1       7M2       8M3

         2         2         2     1.000         0    

*END

后处理:

可以看位移

Beam下可以看st方向的受力、力矩情况、应力等;

History面板下可以看2号节点的位移曲线


来源:浅香岁月
LS-DYNA非线性CSTGID材料控制
著作权归作者所有,欢迎分享,未经许可,不得转载
首次发布时间:2025-12-10
最近编辑:10月前
lsdyna-
硕士 | 高级仿真应用... 显式动力学
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