MultiStage Dependent or Independent Simulations using *CASE

A powerful feature of LS-DYNA v970 and beyond that has yet to gain widespread popularity is the *CASE keyword. Here are two examples to highlight the use of *CASE.

Sequential and Independent Simulations
Ex: Head Impact (FMVSS 201)
*keyword $ $ Impact 1 $ *case_begin_1 *title position 1 impact *include vehicle_model.i *include head_position_1.i *case_end_1 $ $ Impact 2 $ *case_begin_2 *title position 2 impact *include vehicle_model.i *include head_position_2.i *case_end_2 $ $ .... *end Sequential and Dependent Simulations
Ex: Cumulative Bumper Damage
*keyword $ $ Impact 1 $ *case_begin_1 *title position 1 impact *include vehicle_model.i *include impactor_position.i *case_end_1 $ $ Impact 2 $ *case_begin_2 r=1.d3dump01 *title position 2 impact *include vehicle_model.i *include impactor_position_2.i *case_end_2 $ $ .... *end

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