Oasys LS-DYNA Environment 8.1 VOLUME 3 ... - Oasys Software

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Oasys LS-DYNA Environment: User Guide (Version 8.1) Results: OASYS D3PLOT: TWISTED BEAM Displacement 14 12 10 8 6 4 DISP_RESULTANT .00 2.00 4.01 6.01 8.01 10.02 12.02 14.02 x 1.0E-03 Y X .018000 2 E-3 0 0 E-3 3 6 9 Time 12 15 18 Disp y - node 37 TWISTED BEAM Oasys T/HIS Version 7.0 5-Feb-97 Oasys T/HIS Version 7.0 5-Feb-97 Z Page A.74
Oasys LS-DYNA Environment: User Guide (Version 8.1) LS-DYNA Manual Section: *DEFORMABLE_TO_RIGID Additional maual Sections: *LOAD_BODY_Y Example of: Interaction of Pendulums Example Filenames: pendulum_impact.key pendulum_impact.key01 pendulum_impact.key02 Execution lines: Initial run pendulum_impact.key Restart 1 pendulum_impact.key01 + pendulum_impact..dpf01 Restart 2 pendulum_impact.key02 + pendulum_impact..dpf02 Description: Two cubes are connected by bars to a pendulum. One cube is in a horizontal position with gravitational acceleration, base acceleration. The cubes are treated as rigid bodies while no contact or deformation occurs. The cubes are flexible during contact. Then, the cubes become rigid again. Model: Both cubes are modeled as one volume element with side length 10 mm. The elastic material describes both cubes and the bars. The distance from the middle of the cube to the bearing shaft is 100 mm. The system is subjected to an acceleration of gravity of 10,000 kg mm/second 2 . The calculations terminate at 0.5 seconds. Input: Base acceleration defines gravity (*LOAD_BODY_Y), which is changed in time by a load curve (*DEFINE_CURVE). Surface to surface contact type 3 defines the interface between the two cubes (*CONTACT_SURFACE_TO_SURFACE). The material definition of the cubes changes to a rigid material in the beginning of the calculations (*DEFORMABLE_TO_RIGID). Reference: Schweizerhof, K. and Weimer, K. Page A.75
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Oasys LS-DYNA Environment 8.1 VOLUME 3 ... - Oasys Software

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