岩土力学2017，Vol.38Issue(8)：2221-2226,2233,7.DOI:10.16285/j.rsm.2017.08.009
一个与弹性应变能相协调的脆性横观各向同性材料破坏准则
Failure criterion coordinated with elastic energy for transversely isotropic brittle materials
摘要
Abstract
Under natural conditions,geomaterials under gravity usually exhibit transversely isotropic properties.In this study,a new failure criterion for transversely isotropic brittle materials has been developed.The derivation of this failure criterion is driven by the strain energy density,rather than a completely phenomenological approach.So the form of the failure criterion can be coordinated with elastic strain energy density.This coordination explain the terms in the failure criterion as well as those in the elasticity theory.Obtained by series expansion this new failure criterion includes five independent material parameters and five terms which can be coordinated with those of the elastic energy.These material parameters can be determined by corresponding independent test,and are not just fitting parameters.The shapes of the failure surface in the stress space and in the π-plane of the proposed criterion are compared with Tsai-Wu criterion.Although the derivation of the criterion is totally different,the comparison results show this failure criterion is similar to Tsai-Wu criterion.In addition,this failure criterion can be degenerated into the criterion suggested by Christensen for isotropic materials.Comparisons with three sets of experimental data are compared to illustrate the proposed criterion.the results illustrated the prediction ability of the criterion.关键词
强度理论/横观各向同性/破坏准则/弹性应变能/脆性材料Key words
strength theory/transversely isotropy/failure criterion/elastic energy/brittle materials分类
建筑与水利引用本文复制引用
王蕉,楚锡华,姜清辉..一个与弹性应变能相协调的脆性横观各向同性材料破坏准则[J].岩土力学,2017,38(8):2221-2226,2233,7.基金项目
国家自然科学基金资助项目(No.11172216,No.11472196) （No.11172216,No.11472196）
国家重点基础研究发展计划(No.2010CB731502).This work was supported by the National Natural Science Foundation of China (11172216,11472196) and the National Program on Key Basic Research and Development Program of China (2010CB731502). （No.2010CB731502）
