One of the tests used in occupant safety analysis is a roof crush test. It is used to evaluate how a car will deform during a rollover accident. A safer car does not deform as much providing the occupant a larger survival space during this kind of accident. In this test, a plate shaped impactor is pushed down on one side of the roof at constant (slow, quasi-static) speed. This load case challenges the solver because of large deformations, complex contact situations as well as local buckling. This model was computed successfully with the LS-DYNA R9.0.1 MPP implicit solver including dynamic effects. Last but not least, we want to acknowledge the CCSA for the baseline model.
*BOUNDARY_PRESCRIBED_MOTION_RIGID_LOCAL *BOUNDARY_PRESCRIBED_MOTION_SET *CONNECTION_END_SPOTWELD *CONNECTION_ENTITIES *CONNECTION_LAYER_PART_ID *CONNECTION_START_SPOTWELD *CONSTRAINED_JOINT_REVOLUTE_ID *CONSTRAINED_NODAL_RIGID_BODY *CONSTRAINED_RIGID_BODIES *CONSTRAINED_SPOTWELD *CONTACT_AUTOMATIC_SINGLE_SURFACE_MORTAR_ID *CONTACT_AUTOMATIC_SURFACE_TO_SURFACE_MORTAR_ID *CONTACT_TIED_SHELL_EDGE_TO_SURFACE_ID *CONTACT_TIED_SHELL_EDGE_TO_SURFACE_ID_BEAM_OFFSET *CONTROL_ACCURACY *CONTROL_BULK_VISCOSITY *CONTROL_CONTACT *CONTROL_ENERGY *CONTROL_HOURGLASS *CONTROL_IMPLICIT_AUTO *CONTROL_IMPLICIT_DYNAMICS *CONTROL_IMPLICIT_GENERAL *CONTROL_IMPLICIT_SOLUTION *CONTROL_IMPLICIT_SOLVER *CONTROL_MPP_IO_NODUMP *CONTROL_OUTPUT *CONTROL_SHELL *CONTROL_SOLID *CONTROL_SOLUTION *CONTROL_TERMINATION *CONTROL_TIMESTEP *DATABASE_ABSTAT *DATABASE_BINARY_D3PLOT *DATABASE_DEFORC *DATABASE_ELOUT *DATABASE_EXTENT_BINARY *DATABASE_FORMAT *DATABASE_GLSTAT *DATABASE_JNTFORC *DATABASE_MATSUM *DATABASE_NODOUT *DATABASE_RBDOUT *DATABASE_RCFORC *DATABASE_SBTOUT *DATABASE_SLEOUT *DEFINE_COORDINATE_NODES *DEFINE_CURVE *DEFINE_TRANSFORMATION *ELEMENT_BEAM *ELEMENT_MASS *ELEMENT_SHELL *ELEMENT_SOLID *END *INCLUDE *INCLUDE_TRANSFORM *KEYWORD *LOAD_BODY_Z *MAT_DAMPER_VISCOUS *MAT_ELASTIC *MAT_LOW_DENSITY_FOAM *MAT_MODIFIED_PIECEWISE_LINEAR_PLASTICITY *MAT_PIECEWISE_LINEAR_PLASTICITY *MAT_RIGID *MAT_SPOTWELD *MAT_SPRING_ELASTIC *MAT_SPRING_NONLINEAR_ELASTIC *NODE *PARAMETER *PART *PART_CONTACT *SECTION_BEAM *SECTION_DISCRETE *SECTION_SHELL *SECTION_SOLID *SET_NODE_LIST *SET_PART_LIST *TITLE
*KEYWORD
$ ===============
$ PARAMETER cards
$ ===============
$
*PARAMETER
R tend 2.2
$ ===========================
$ DEFINE_TRANSFORMATION cards
$ ===========================
$
*DEFINE_TRANSFORMATION
1
TRANSL 0.0 0.0 0.0
$ =============
$ INCLUDE cards
$ =============
*INCLUDE_TRANSFORM
YarisD_V2g_ag04_rc05emin.key
0 0 0 0 0 0 0
0
0.0 0.0 0.0 0
1
$
*INCLUDE
roof_crush_impactor_03_pos.k
$
*INCLUDE
implicit_control_cards_R9a.k
$ =============
$ CONTROL cards
$ =============
$
*CONTROL_IMPLICIT_AUTO
1 25 5 1.0E-3 -99 0.0 0 0
*CONTROL_IMPLICIT_DYNAMICS
1 0.55 0.28 0.0 0.0 0.0 2
$ ============
$ DEFINE cards
$ ============
*DEFINE_CURVE
99 0 0.0 0.0 0.0 0.0 0
0.0 5.0000001E-2
0.2000000 5.0000001E-2
0.5000000 5.0000001E-2
1.0000000 2.0000001E-2
1.1000000 2.5000000E-2
1.5000000 2.5000000E-2
2.0000000 2.5000000E-2
3.0000000 2.5000000E-2
4.0000000 2.5000000E-2
$
$
*DEFINE_CURVE
100 0 0.0 0.0 0.0 0.0 0
0.0 0.0
100.00000 0.0
$
$
*DEFINE_CURVE
101 0 0.0 0.0 0.0 0.0 0
0.0 0.0
0.2000000 2.0000000
4.0000000 254.00000
100.00000 254.00000
$
$
*DEFINE_CURVE
102 0 0.0 0.0 0.0 0.0 0
0.0 0.0
1.0000000 1.00000
4.0000000 1.00000
100.00000 1.00000
$
$
*DEFINE_CURVE
110 0 0.0 0.0 0.0 0.0 0
0.0 0.0
3.0000000 1.0000000
10.000000 1.0000000
$ ==============
$ BOUNDARY cards
$ ==============
$
*BOUNDARY_PRESCRIBED_MOTION_SET
100 1 2 100 0.0 0 0.0 0.0
$
$: SET_NODE 100 is in include file YarisD_V2g_ag04_rc01.key
100 2 2 100 0.0 0 0.0 0.0
$
$: SET_NODE 100 is in include file YarisD_V2g_ag04_rc01.key
100 3 2 100 0.0 0 0.0 0.0
$
$: SET_NODE 100 is in include file YarisD_V2g_ag04_rc01.key
100 5 2 100 0.0 0 0.0 0.0
$
$: SET_NODE 100 is in include file YarisD_V2g_ag04_rc01.key
100 6 2 100 0.0 0 0.0 0.0
$
$: SET_NODE 100 is in include file YarisD_V2g_ag04_rc01.key
100 7 2 100 0.0 0 0.0 0.0
$
$: SET_NODE 100 is in include file YarisD_V2g_ag04_rc01.key
*BOUNDARY_PRESCRIBED_MOTION_RIGID_LOCAL
1 1 2 101 0.0 0 0.0
$ ==========
$ LOAD cards
$ ==========
*LOAD_BODY_Z
102 9810.0 0
$
$ =============
$ CONTACT cards
$ =============
$
*CONTACT_AUTOMATIC_SURFACE_TO_SURFACE_MORTAR_ID
1impactor vs roof
1 1 3 2 0 0 1 1
0.1 0.0 0.0 0.0 0.0 0 0.0 0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
3 2
$
*SET_PART_LIST
1 0.0 0.0 0.0 0.0
2000173 2000103 2000322 2000323 2000523 2000407
$
*TITLE
CSSA TOYOTA Yaris implicit roof crush analysis
*END