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A general procedure for the solution of problems in structural dynamics is described herein. The method is capable of application to structures of any degree of complication, with any relationship between force and displacement ranging from linear elastic behavior through various degrees of inelastic behavior or plastic response, to failure. Any type of dynamic loading, such as that due to shock or impact, vibration, earthquake motion, or blast from a nuclear weapon, can be considered.
N. M. Newmark (Mon,) studied this question.