3D桁架結構失效分析.pdf

3D桁架結構失效分析論文，權威，絕對經典。
國外最新研究結果，在韓國獲取。

Computers & Slrucrures Vol. 58, No. 5, pp. 981-990. 1996 Copyright 0 1995 Elwiw Science Ltd Printed in Great Britain. All rkhts moved 0045-7949@5MO217-0I . 004%7949/96 $15.00 + 0.00 PROGRESSIVE FAILURE ANALYSIS OF INELASTIC SPACE TRUSS STRUCTURES G. E. Blandford Department of Civil Engineering, University of Kentucky, Lexington, KY 40506-0281, U.S.A (Received 2 August 1994) Abstract-In general, the progressive failure analysis of space truss systems can only be adequately evaluated with both material and geometric nonlinearities considered. This paper utilizes constitutive relationships to provide the fundamental modeling of elastic and inelastic member behavior, coupled with a geometrically nonlinear finite element model. Modeled member material behavior modes include: buckling, yielding, inelastic post-buckling, unloading, and reloading. Geometric nonlinearity is based on iteratively correcting the linearized updated Lagrangian space truss displacement equations. Interaction of the nonlinear loading behavior results in structure force redistribution which can lead to member failure, unloading, or reloading. Such behavior can lead to the progressive failure of a space truss structure. The developed model traces the sequence of localized buckling, yielding, and inelastic member response. Results are presented to demonstrate model capabilities for representing the inelastic, progressive failure response of space truss structures. INTRODUCTION (STAP) has been developed based on the initial development work of Refs [5-7]. The program traces Space truss systems have been used extensively and the inelastic, load-displacement reponse of a struc- reliably for structures which co