本人新手，正在學(xué)LS-DYNA，自己也在照著書上的例子練習(xí)，但常常發(fā)生錯(cuò)誤。在這里借用技術(shù)鄰這個(gè)平臺(tái)交流學(xué)習(xí)，分享自己的經(jīng)驗(yàn)。方便別人發(fā)現(xiàn)錯(cuò)誤，也及時(shí)改正我自己的錯(cuò)誤。

    分析流程：用ANSYS Mechanical APDL Product Launcher打開ANSYS，注意在打開時(shí)選擇帶有LS-DYNA的license并勾選LS-DYNA模塊→在GUI過濾的預(yù)前設(shè)置處勾選LS-DYNA顯示分析→設(shè)置單元、實(shí)常數(shù)并建立幾何模型（該粘合的地方需要粘合）→Mesh Attributes進(jìn)行材料分布處理，然后劃分網(wǎng)格→在LS-DYNA Options處創(chuàng)建Part，定義接觸類型、時(shí)間邊界條件、初始速度→設(shè)置時(shí)間控制、時(shí)間步長(zhǎng)、能量選項(xiàng)和沙漏控制等→輸出K文件，修改K文件，遞交求解器求解→用Ls-prepost軟件進(jìn)行后處理，或者用Matlab進(jìn)行數(shù)據(jù)處理等。

圖1 ANSYS建立有限元模型

圖2 Ls-prepost查看結(jié)果

圖3 Ls-prepost繪制曲線

圖4 將結(jié)果導(dǎo)入Matlab并繪制曲線

下面是部分K文件中比較重要的關(guān)鍵字：

*KEYWORD

*TITLE 

                

$

*DATABASE_FORMAT

      0

..........

$

$

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

$                    SECTION DEFINITIONS                    $

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

$

*SECTION_SHELL

   1      2    0.8333       2.0      3.0      0.0       0

  2.00     2.00     2.00     2.00     0.00    

*SECTION_SHELL

   2      2    0.8333       2.0      3.0      0.0       0

  1.00     1.00     1.00     1.00     0.00    

$

$

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

$                     MATERIAL DEFINITIONS                  $

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

$

*MAT_ELASTIC

       1 0.785E-08 0.210E+06  0.300000      0.0      0.0      0.0

$

$

$

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

$                       PARTS DEFINITIONS                  $

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

$

$

*PART

Part         1 for Mat        1 and Elem Type        2

     1       1       1       0       0       0       0

$

*PART

Part         2 for Mat        1 and Elem Type        1

     2       2       1       0       0       0       0

..........

 

$

$

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

$                      CONTACT DEFINITIONS                  $

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

$

*CONTACT_SURFACE_TO_SURFACE

     2      1      3      3      0      0      1      1

 0.000    0.000    0.000    0.000    0.000     0 0.000  0.1000E+08

 1.000    1.000    0.000    0.000    1.000    1.000    1.000   1.000    

$

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

$                        CONTROL OPTIONS                  $

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

$

*CONTROL_ENERGY

        2        1        2        2

*CONTROL_HOURGLASS

        4     0.100    

*CONTROL_SHELL

  20.0      1      -1       1       2       2       1

*CONTROL_CONTACT

  0.10000   0.00000     2       0       1       1       2

      0       0      10      0     4.00    

*CONTROL_TIMESTEP

    0.0000    0.5000       0      0.00      0.00    

*CONTROL_TERMINATION

 0.200E-03     0   0.00000   0.00000   0.00000

$

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

$                       TIME HISTORY                      $

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

$

*DATABASE_BINARY_D3PLOT

0.2000E-05

*DATABASE_BINARY_D3THDT

0.2000E-06

$

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

$                      DATABASE OPTIONS                    $

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

$

*DATABASE_EXTENT_BINARY

     0      0      3      1      0      0      0      0

     0      0      4      0      0      0

$

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

$                  INITIAL VELOCITY DEFINITIONS                $

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

$

*SET_NODE_LIST

      2    0.000    0.000    0.000    0.000

    1682    1683    1684    1685    1686    1687    1688    1689

..........

    1794    1795    1796    1797    1798    1799    1800    1801

    1802

*INITIAL_VELOCITY

        2        0        0

 0.000    0.000   -.1500E+06 0.000    0.000    0.000    

*END

plate.k