Straight Cantilever Beam — Welcome to LS-DYNA Examples

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Analysis of a cantilever beam loaded at one end with a quasi-axial load. The material is elastic. Example 6 from Introductory Manual for LS-DYNA Users by James M. Kennedy.

Keywords

*BOUNDARY_SPC_NODE
*CONTROL_IMPLICIT_AUTO
*CONTROL_IMPLICIT_GENERAL
*CONTROL_IMPLICIT_SOLUTION
*CONTROL_IMPLICIT_SOLVER
*CONTROL_OUTPUT
*CONTROL_TERMINATION
*DATABASE_HISTORY_BEAM
*DATABASE_HISTORY_NODE
*DATABASE_NCFORC
*DATABASE_NODAL_FORCE_GROUP
*DATABASE_NODFOR
*DATABASE_NODOUT
*DEFINE_CURVE
*DEFINE_CURVE
*ELEMENT_BEAM
*END
*KEYWORD
*LOAD_NODE_POINT
*MAT_ELASTIC
*NODE
*PART
*SECTION_BEAM
*SET_NODE_LIST
*SET_NODE_LIST_GENERATE
*TITLE

Reduced Input

*KEYWORD
*TITLE
Straight Cantilever with Axial End Point Load
*CONTROL_IMPLICIT_AUTO
         1        11         5            0.010000
*CONTROL_IMPLICIT_GENERAL
         1  0.010000         2         0         2
*CONTROL_IMPLICIT_SOLVER
         5         2         2         0         1       0.0         1       0.0
         2
*CONTROL_IMPLICIT_SOLUTION
         2        11        15    0.0010    0.0100  1.00e+10  0.900000  1.00e-10
         2         1         1         2         1
         6         1       0.0         1         2
*CONTROL_OUTPUT
         1         3         1         0       0.0         0      1000      5000
         3
*CONTROL_TERMINATION
  1.000000         0       0.0       0.0       0.0
*DATABASE_NCFORC
  0.001000         1
*DATABASE_NODFOR
  0.001000         1
*DATABASE_NODOUT
  0.001000         1
*DATABASE_NODAL_FORCE_GROUP
         2
*DATABASE_HISTORY_NODE
         6
*DATABASE_HISTORY_BEAM
         3
*DEFINE_CURVE
         1         0  1.000000  1.000000       0.0       0.0
                 0.0                 0.0
          1.00000000       3.8440088e+06
*DEFINE_CURVE
         2         0  1.000000  1.000000       0.0       0.0
                 0.0                 0.0
          1.00000000         38440.08545
*ELEMENT_BEAM
*NODE
*BOUNDARY_SPC_NODE
*PART
         1         1         1
*SECTION_BEAM
         1         1  0.830000         2         0       0.0
  0.100000  0.100000  0.100000  0.100000
*MAT_ELASTIC
         1  7850.0002.1000e+11       0.0       0.0       0.0       0.0
*LOAD_NODE_POINT
         6         1         1 -1.000000
*LOAD_NODE_POINT
         6         2         2 -1.000000
*SET_NODE_LIST_GENERATE
         1       0.0       0.0       0.0       0.0
         2        92
*SET_NODE_LIST
         2       0.0       0.0       0.0       0.0
         6
*END

Figures

figure_screw_0ms.png

straight_cantilever_beam1.png

Animated Result

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