点击次数：

论文类型：期刊论文

发表时间：2016-01-01

发表刊物：ENGINEERING COMPUTATIONS

收录刊物：SCIE

卷号：33

期号：1

页面范围：252-273

ISSN号：0264-4401

关键字：Cables; Active actuation; Clustered tensegrity; Co-rotational formulation; Large displacement; Small strain

摘要：Purpose - The purpose of this paper is to propose an efficient finite element formulation for nonlinear analysis of clustered tensegrity that consists of classical cables, clustered cables and bars.
   Design/methodology/approach - The derivation of the finite element formulation is based on the co-rotational approach, which decomposes a geometrically nonlinear deformation into a large rigid body motion and a small-strain deformation. A tangent stiffness matrix of a clustered cable is proposed and the Newton-Raphson scheme is employed to solve the nonlinear equation.
   Findings - The derived tangent stiffness matrix, including an additional stiffness terms that describes the slide effect of pulleys, can regress to the stiffness matrix of a classical cable, which is convenient for the implementation of finite element procedure. Two typical numerical examples show that the proposed formulation is accurate and requires less iteration than the force density method.
   Originality/value - The co-rotational formulation of a clustered cable is originally proposed, although some mature methods, such as the TL, Force Density and Dynamic Relaxation method, have been applied to nonlinear analysis of clustered tensegrity. The proposed co-rotational formulation proved efficient.