Analysis of slackened skeletal structures by mathematical programming

作     者：Gawecki, A Kuczma, MS Kruger, P 

作者机构：Poznan Tech Univ Inst Struct Engn PL-60965 Poznan Poland 

出 版 物：《COMPUTERS & STRUCTURES》 (计算机与结构)

年 卷 期：1998年第69卷第5期

页      面：639-654页

核心收录：

学科分类：08[工学] 0814[工学-土木工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：KBN, (8T11F01710) Polish Committee of Scientific Research 

主　　题：engineering plasticity unilateral contact finite elements mathematical programming 

摘      要：The paper deals with the holonomic behavior of slackened-elastic-plastic (SEP) skeletal structures (beams, frames, trusses) using the quadratic programming formulations. The considerations are restricted to frictionless quasi-static processes, small strains and piecewise linear approximations of the yield and clearance surfaces. The results of numerical experiments for several illustrative examples are presented, including the unilateral contact problem between an elastic-perfectly plastic beam and an elastic-perfectly plastic foundation. In the analysis the discrete FEM-oriented mathematical model [A. Gawecki, Elasto-plasticity of slackened systems, Arch. Mech. 1992;44:363-390 was employed. (C) 1998 Elsevier Science Ltd. All rights reserved.