考虑材料拉压强度异性的简支圆板塑性极限统一解  

Unified Plastic Limit Analysis of Simply Supported Circular Plates With Strength Differential Effect in Tension and Compression

作　　者：王延斌[1] 俞茂宏[1] 

机构地区：[1]西安交通大学,西安710049

出　　处：《应用力学学报》2003年第1期144-148,共5页Chinese Journal of Applied Mechanics

摘　　要：采用统一强度理论首次对简支圆板在边缘均布荷载作用下的塑性极限进行了求解 ,得出了相应的统一解形式以及统一强度理论参数b和拉压强度比α对塑性极限的影响曲线。所给出的解可以适用于各种不同特性的材料。利用本文的解还可以得到一系列新的结果 ,可以更好的发挥材料的强度潜能 ,取得明显的经济效益。A unified solution of plastic limit loads of simply su pp orted circular plates under edge uniformly distributed load is presented. The in fluences of the coefficient b and tension-compression ratio α on the plastic l imit loads are investigated. The obtained results are suitable for a wide range of materials with SD effect and the intermediate stress effect. A series of new results are also obtained in this paper that is greater than the results of Tres ca and Mohr-Coulomb theory, so the potential strength of materials can be fully applied in the relevant engineering structures.

关 键 词：统一强度理论 塑性极限 简支圆板 边缘均布荷载 

分 类 号：O346[理学—固体力学]