Unified solution of limit loads of thick wall cylinder subject to external pressure considering strain softening

2007年第1卷第3期

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《结构与土木工程前沿（英文）》 >> 2007年第1卷第3期 doi: 10.1007/s11709-007-0043-x

Unified solution of limit loads of thick wall cylinder subject to external pressure considering strain softening

Geotechnical Institute, Hunan University, Changsha 410082, China

发布日期： 2007-09-05

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摘要

Based on the unified strength theory [1], a unified strength criterion for strain softening materials, such as concrete or rock, was derived, and the elastic and plastic limit loads of a thick-walled cylinder made of these materials subject to external pressure were also given. In addition, the influence of some factors on the limit loads of such cylinders as the ratio of the external radius to internal radius,/, the coefficient , which reflects the effect of medium principal stress and the normal stress of the relevant surface on the material destroy degree, the ratio of tensile strength to compressed strength of the material, , and the damage variable