|
»Click here to display Table of Contents«
|
LS-DYNA to Nastran Conversion |
|
|
|
|
|
LS-DYNA to Nastran Conversion |
|
|
|
|
Use the Conversion tool to convert a LS-DYNA file to a Nastran file.
| 1. | Load the LS-DYNA user profile. |
| 2. | Import a LS-DYNA model. |
| 3. | To run the conversion macro, from the menu bar, click Tools > Convert > LS-DYNA > To Nastran. The Conversion tab opens. |
| 4. | To start the conversion, click Convert. After the conversion, the Nastran user profile automatically loads. |
| 5. | Review and export the deck using the Nastran user profile. Some of the keywords in the LS-DYNA deck are converted to the Nastran deck as per the following tables. |
Element Mapping
LS-DYNA type |
Nastran type |
*ELEMENT_MASS |
CONM2 |
*ELEMENT_INERTIA |
CONM2 |
*ELEMENT_BEAM |
CBAR |
*ELEMENT_SHELL |
CTRIA3,CQUAD4, CQUAD8, CTRIA6 |
*ELEMENT_SOLID |
CTETRA4/CHEXA8/CPENTA6 |
*CONSTRAINED_SPOTWELD |
RBAR |
*ELEMENT_PLOTEL |
PLOTEL |
*CONSTRAINED_INTERPOLATION |
RBE3 |
*CONSTRAINED_NODE_SET |
RBE2 |
*ELEMENT_DISCRETE |
CELAS1 |
Property Mapping
LS-DYNA type |
Nastran type |
*SECTION_SOLID |
PSOLID |
*SECTION_SHELL |
PSHELL |
*SECTION_BEAM |
PBAR, PBARL |
*SECTION_BEAM with ELFORM 1 is mapped to the PBARL property.
*SECTION_BEAM with ELFORM 2 is mapped to the PBAR property.
Material Mapping
All the LS-DYNA materials are mapped MAT1 in Nastran.
Boundary Conditions Mapping
LS-DYNA type |
Nastran type |
*BOUNDARY_SPC |
SPC |
*LOAD_NODE_POINT |
FORCE, MOMENT |
*LOAD_SEGMENT |
PLOAD4 |
*INITIAL_TEMP |
TEMP |
Coordinate System Mapping
LS-DYNA type |
Nastran type |
*DEFINE_COORDINATE_NODE |
CORD1R |
*DEFINE_COORDINATE_SYSTEM |
CORD2R |
