k文件

小胡子

ANSYS\DYAN的K文件修改的理论根据是啥?如何很好的掌握对他的修改!

AaronSpark

K文件是一个以*.k为扩展名的文件，可以用记事本或者Ultraedit等工具打开。K文件中包含了大量信息，包括节点信息（坐标、所属单元号等）、单元信息（节点组成、单元类型、材料性质等等）、荷载信息及大量的控制求解的选项卡信息。

下面给出一个K文件的数据文件例子：

*KEYWORD 200000000
*TITLE

$
*DATABASE_FORMAT
1
$
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ SECTION DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*SECTION_SOLID_ALE
1 11

*SECTION_SOLID
2 1
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ MATERIAL DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*MAT_HIGH_EXPLOSIVE_BURN
$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
$ mid ro d pcj beta k g sigy
1 0.100E+04 3600 0.361E+10 0
*EOS_JWL
$ eosid A B r1 r2 omeg Eo Vo
1 47.6E+09 0.529E+09 3.5 0.9 1.3 4.5E+09 1.00
$ 1 2.29E+11 0.055E+11 6.5000000 1.0000000 0.3500000 3.510E+09 1.0000000
*MAT_NULL
2 1.29 0.00 0.00 0.00 0.00 0.00 0.00
*EOS_LINEAR_POLYNOMIAL
2 0.0000000 0.0000000 0.0000000 0.0000000 0.4000000 0.4000000 0.0000000
0.0000000 0.0000000
*MAT_ELASTIC
3 0.270E+04 0.450E+11 0.2300000 0.0 0.0 0.0
$*MAT_PLASTIC_KINEMATIC
$ 3 0.270E+04 0.600E+11 0.2300000 0.120E+09 0.200E+10 0.5000000
$ 0.0000000 0.0000000 0.0500000
$
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ PARTS DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$
*PART
Part 1 for Mat 1 and Elem Type 1
1 1 1 1 0 0 0
$
*PART
Part 2 for Mat 2 and Elem Type 1
2 1 2 2 0 0 0
$
*PART
Part 3 for Mat 3 and Elem Type 1
3 2 3 0 0 0 0
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ CONTACT DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$
*INITIAL_DETONATION
1 0.0 0.0 0.0 0.00
*CONTROL_ALE
$ DCT NADV METH AFAC BFAC CFAC DFAC EFAC
2 1 2 -1.0
$ START END AAFAC VFACT VLIMIT EBC

*ALE_MULTI-MATERIAL_GROUP
1,1
2,1
*set_part_list
1
3
*set_part_list
2
1 2
*CONSTRAINED_LAGRANGE_IN_SOLID
$ SLAVE MASTER SSTYP MSTYP NQUAD CTYPE DIREC MCOUP
1 2 0 0 3 4 2 0
$ START END PFAC FRIC FRCMIN NORM
0 0 0.1 0.0 0.5 0
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ CONTROL OPTIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*CONTROL_ENERGY
2 2 2 2
*CONTROL_HOURGLASS
1 0.100
*CONTROL_SHELL
20.0 1 -1 1 2 2 1
*CONTROL_BULK_VISCOSITY
1.50 0.600E-01
*CONTROL_TIMESTEP
0.0000 0.6700 0 0.00 0.00
*CONTROL_TERMINATION
0.100E-01 0 0.00000 0.00000 0.00000
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ TIME HISTORY $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*DATABASE_BINARY_D3PLOT
0.1500E-03
*DATABASE_BINARY_D3THDT
0.1500E-04
*DATABASE_BINARY_D3DUMP
0
$
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ NODE DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*NODE
1 6.352468683E-03 4.000000000E+00 6.408650959E-03 0 0
2 6.408712194E-03 4.000000000E+00-6.352479837E-03 0 0
3 6.352468683E-03 0.000000000E+00 6.408650959E-03 0 0
4 1.131370855E-02 3.840000000E+00 1.131370845E-02 0 0
5 1.131370855E-02 3.680000000E+00 1.131370845E-02 0 0
6 1.131370855E-02 3.520000000E+00 1.131370845E-02 0 0
7 1.131370855E-02 3.360000000E+00 1.131370845E-02 0 0
8 1.131370855E-02 3.200000000E+00 1.131370845E-02 0 0
9 1.131370855E-02 3.040000000E+00 1.131370845E-02 0 0
10 1.131370855E-02 2.880000000E+00 1.131370845E-02 0 0
11 1.131370855E-02 2.720000000E+00 1.131370845E-02 0 0
12 1.131370855E-02 2.560000000E+00 1.131370845E-02 0 0
13 1.131370855E-02 2.400000000E+00 1.131370845E-02 0 0
14 1.131370855E-02 2.240000000E+00 1.131370845E-02 0 0
15 1.131370855E-02 2.080000000E+00 1.131370845E-02 0 0
16 1.131370855E-02 1.920000000E+00 1.131370845E-02 0 0
17 1.131370855E-02 1.760000000E+00 1.131370845E-02 0 0
18 1.131370855E-02 1.600000000E+00 1.131370845E-02 0 0
19 1.131370855E-02 1.440000000E+00 1.131370845E-02 0 0

......（这里省略了更多的节点信息）
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ ELEMENT DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*ELEMENT_SOLID
1 1 124 130 128 133 239 99 135 75
2 1 239 99 135 75 240 98 136 74
3 1 240 98 136 74 241 97 137 73
4 1 241 97 137 73 242 96 138 72
5 1 242 96 138 72 243 95 139 71
6 1 243 95 139 71 244 94 140 70
7 1 244 94 140 70 245 93 141 69
8 1 245 93 141 69 246 92 142 68
9 1 246 92 142 68 247 91 143 67
10 1 247 91 143 67 248 90 144 66
11 1 248 90 144 66 249 89 145 65
12 1 249 89 145 65 250 88 146 64
13 1 250 88 146 64 251 87 147 63

......（这里省略了更多的单元信息）

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ COORDINATE SYSTEMS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*SET_SEGMENT
1 0.000 0.000 0.000 0.000
5906 5907 7898 7885 0.000 0.000 0.000 0.000
7885 7898 7899 7884 0.000 0.000 0.000 0.000

......

*BOUNDARY_NON_REFLECTING
1 1 1
*SET_SEGMENT
2 0.000 0.000 0.000 0.000
130 124 133 128 0.000 0.000 0.000 0.000
133 124 131 132 0.000 0.000 0.000 0.000
124 130 129 131 0.000 0.000 0.000 0.000

......

3694 3695 3773 3772 0.000 0.000 0.000 0.000
3695 2205 1996 3773 0.000 0.000 0.000 0.000
*BOUNDARY_NON_REFLECTING
2 1 1
*SET_NODE_LIST
1 0.000 0.000 0.000 0.000
1878 1879 1880 1881 1882 1883 1884 1885
1886 1887 1888 1889 1890 1891 1892 1893
1894 1895 1896 1897 1898 1899 1900 1901

......

8681 8682 8683 8684 8685 8686
*BOUNDARY_SLIDING_PLANE
1 0.0000 0.0000 -1.0000 0
*SET_NODE_LIST
2 0.000 0.000 0.000 0.000
1926 1927 1928 1929 1930 1931 1932 1933
1934 1935 1936 1937 1938 1939 1940 1941

......

8283 8284 8285 8286 8287 8288 8289 8290
8291 8292 8293 8294 8295 8296
*BOUNDARY_SLIDING_PLANE
2 0.0000 0.0000 1.0000 0
*SET_NODE_LIST
3 0.000 0.000 0.000 0.000
28 29 30 31 32 33 34 35
36 37 38 39 40 41 42 43
44 45 46 47 48 49 50 51

......

2604 2605 2606 2607 2608 2609
*BOUNDARY_SLIDING_PLANE
3 -1.0000 0.0000 0.0000 0
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ LOAD DEFINITIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ RIGID BOUNDRIES $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ DATABASE OPTIONS $
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*DATABASE_EXTENT_BINARY
0 0 3 1 0 0 0 0
0 0 4 0 0 0
*END

AaronSpark

修改的理论根据不知道你指的是什么？

要修改k文件，需要了解k文件的结构，以及相关参数的具体物理含义

hello2001

看一下有关 LS-DYNA方面的书籍，例如LS-DYNA3D理论基础与实例分析，ansys_ls-dyna基础理论与工程实践等书，先了解一下关键字的意义。