Formulation of sliding cable element and its application in load relieving system

摘要

A new kind of FEM element sliding cable element which is used to simulate cables sliding freely inside the joints is refer to. Its detailed tangent stiffness matrix presentation is given, which has arbitrary number of sliding nodes and satisfies uniform strain assumption. A typical load relieving system model is established applying the sliding cable element and studied under 2 representative load cases. It shows that sliding cable element fits the analysis of the load relieving system well. As the results of analysis are reasonable, the correctness and validity of sliding cable element can be proved. Furthermore, the strategy of simulating distributing load by applying concentrated forces on separate nodes of sliding cable element is proved feasible.