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This is an example for running problems with IGA. Results can be compared with classical FEA. Examples 11.5-11.6 from LS-Dyna training class NVH, Fatigue and Frequency Domain Analysis with LS-DYNA by Yun Huang.
Keywords
*BOUNDARY_SPC_SET
*CONTROL_IMPLICIT_EIGENVALUE
*CONTROL_IMPLICIT_GENERAL
*CONTROL_TERMINATION
*DATABASE_BINARY_D3PLOT
*DATABASE_EXTENT_BINARY
*DATABASE_FREQUENCY_BINARY_D3SSD
*DATABASE_GLSTAT
*DEFINE_CURVE
*ELEMENT_SOLID_NURBS_PATCH
*END
*FREQUENCY_DOMAIN_SSD
*INCLUDE
*KEYWORD
*MAT_PLASTIC_KINEMATIC
*PART
*SECTION_SOLID
*SET_NODE_LIST_TITLE
*TITLE
*BOUNDARY_SPC_SET
*CONTROL_IMPLICIT_EIGENVALUE
*CONTROL_IMPLICIT_GENERAL
*CONTROL_TERMINATION
*DATABASE_BINARY_D3PLOT
*DATABASE_EXTENT_BINARY
*DATABASE_FREQUENCY_BINARY_D3SSD
*DATABASE_GLSTAT
*DEFINE_CURVE
*END
*FREQUENCY_DOMAIN_SSD
*INCLUDE
*KEYWORD
*MAT_PLASTIC_KINEMATIC
*PART
*SECTION_SOLID
*SET_NODE_LIST_TITLE
*TITLE
*KEYWORD
*TITLE
LS-DYNA keyword deck by LS-PrePost
*FREQUENCY_DOMAIN_SSD
1 20 0.01 1.00 0 0
0.01
1481 0 3 0 100 200
*CONTROL_IMPLICIT_EIGENVALUE
20 0.000 0 0.000 0 0.000 0 0.000
0 0 0 0 1
*DATABASE_FREQUENCY_BINARY_D3SSD
1
0.01 1.00 20
*DEFINE_CURVE
100 0 0.000 0.000 0.000 0.000 0
0.010000000 1.0000E00
1.000000000 1.0000E00
*DEFINE_CURVE
200 0 0.000 0.000 0.000 0.000 0
0.010000000 0.0000000
1.000000000 0.0000000
*DATABASE_EXTENT_BINARY
0 0 0 1 1 1 1 1
0 0 0 1 1 1 2 0
0 01.00000000 0 0 0STRESS STRESS
0 0
*CONTROL_IMPLICIT_GENERAL
1 0.000500 0 0 0 0 0 0
*BOUNDARY_SPC_SET
1 0 1 1 1 1 1 1
*SET_NODE_LIST_TITLE
NODESET(SPC) 1
1 0.0 0.0 0.0 0.0MECH
1 2 3 4 5 6 7 8
9 298 299 300 301 302 303 304
305 306 595 596 597 598 599 600
601 602 603 892 893 894 895 896
897 898 899 900 1189 1190 1191 1192
1193 1194 1195 1196 1197 1486 1487 1488
1489 1490 1491 1492 1493 1494 1783 1784
1785 1786 1787 1788 1789 1790 1791 2080
2081 2082 2083 2084 2085 2086 2087 2088
2377 2378 2379 2380 2381 2382 2383 2384
2385 0 0 0 0 0 0 0
*CONTROL_TERMINATION
20.0 0 0.0 0.01.000000E8
*DATABASE_GLSTAT
0.1 0 0 1
*DATABASE_BINARY_D3PLOT
0.1 0 0 0 0
0
*PART
Part_for_NURB_3D
1 1 1 0 0 0 0 0
*SECTION_SOLID
1 201 0
*MAT_PLASTIC_KINEMATIC
1 7.0999999 2.20.300000012.00000E-4 0.001 1.0
0.0 0.0 0.0 0.0
*ELEMENT_SOLID_NURBS_PATCH
*INCLUDE
11.5.nurbsnode.k
*END
*KEYWORD
*TITLE
LS-DYNA keyword deck by LS-PrePost
*FREQUENCY_DOMAIN_SSD
1 20 0.01 1.00 0 0
0.01
1481 0 3 0 100 200
*CONTROL_IMPLICIT_EIGENVALUE
20 0.000 0 0.000 0 0.000 0 0.000
0 0 0 0 1
*DATABASE_FREQUENCY_BINARY_D3SSD
1
0.01 1.00 20
*DEFINE_CURVE
100 0 0.000 0.000 0.000 0.000 0
0.010000000 1.0000000
1.500000000 1.0000000
*DEFINE_CURVE
200 0 0.000 0.000 0.000 0.000 0
0.010000000 1.0000000
1.500000000 1.0000000
*DATABASE_EXTENT_BINARY
0 0 0 1 1 1 1 1
0 0 0 1 1 1 2 0
0 01.00000000 0 0 0STRESS STRESS
0 0
*CONTROL_IMPLICIT_GENERAL
1 0.000500 0 0 0 0 0 0
*CONTROL_TERMINATION
20.0 0 0.0 0.01.000000E8
*DATABASE_GLSTAT
0.1 0 0 1
*DATABASE_BINARY_D3PLOT
0.1 0 0 0 0
0
*BOUNDARY_SPC_SET
1 0 1 1 1 1 1 1
*SET_NODE_LIST_TITLE
NODESET(SPC) 1
1 0.0 0.0 0.0 0.0MECH
1 2 3 4 5 6 7 8
9 298 299 300 301 302 303 304
305 306 595 596 597 598 599 600
601 602 603 892 893 894 895 896
897 898 899 900 1189 1190 1191 1192
1193 1194 1195 1196 1197 1486 1487 1488
1489 1490 1491 1492 1493 1494 1783 1784
1785 1786 1787 1788 1789 1790 1791 2080
2081 2082 2083 2084 2085 2086 2087 2088
2377 2378 2379 2380 2381 2382 2383 2384
2385 0 0 0 0 0 0 0
*PART
Part_for_NURB_3D
1 1 1 0 0 0 0 0
*SECTION_SOLID
1 1 0
*MAT_PLASTIC_KINEMATIC
1 7.0999999 2.20.300000012.00000E-4 0.001 1.0
0.0 0.0 0.0 0.0
*INCLUDE
11.6.solidnode.k
*END
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