One of the most common initial conditions for crash simulations is some type initial velocity. There are some basic methods of defining initial velocity states in LS_DYNA using *INITIAL_VELOCITY and *INITIAL_VELOCITY_GENERATION, and these methods are effective for simple situations like assigning velocities to all nodes.
In contrast creating initial velocity definitions for directions other than Global XYZ can be more complex and requires additional facilities. This interface allows the flexibility to define velocities in global or local systems, along a vector, in polar coordinates, and even using a combination of angular plus translational. This interface is often used to generate initial velocity conditions for door slam, head impact, and full vehicle crash analysis.
no sample.
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Create Type as Global:
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Create Type as Local:
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Create Type as AlongVect:
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Create Type as Angular:
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Create Type as Ang+Tran:
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