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Combined multi-body dynamics with structural dynamics,a new discrete element with flexibleconnector,which is applicable for 3-D beam structures,is developed in this paper.Both the generalizedelastic coefficient matrix of the flexible connector and the mass matrix of discrete element may be off-diag-onal in a general case.The zero-length rigid element is introduced to simulate the node at which multiple el-ements are jointed together.It may also be effective when the axes of adjacent elements are not in the sameline.The examples for eigenvalue calculation show that the model is successful.It can be extended to thegeometric nonlinear response analysis.
Combined multi-body dynamics with structural dynamics, a new element element with flexibleconnector,which is applicable for 3-D beam structures,is developed in this paper.Both the generalized elastic coefficient matrix of the flexible connector and the mass matrix of unit element may be Off-diag-onal in a general case.The zero-length rigid element is introduced to simulate the node at which multiple el-ements are jointed together.It may also be effective when the axes of adjacent elements are not in the sameline.The Examples for eigenvalue calculation show that the model is successful.It can be extended to thegeometric nonlinear response analysis.