Computational study demonstrates stable dynamic finite element analysis under large rigid-body rotations, highlighting exact energy conservation under constant external loading.
New procedures are proposed for implicit dynamic analysis using the finite element method. The main aim is to give stable solutions with significant rigid‐body motions, in particular rotations. In contrast to most conventional approaches, the time‐integration strategy is closely linked to the ‘element technologies’ with the latter involving a form of co‐rotational procedure. For the undamped situation, one of the solution procedures leads to an algorithm that exactly conserves energy when constant external forces are applied (i.e. with gravity loading).
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Crisfield et al. (1994) studied this question.
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