| 摘要: |
| 引入相似角并利用非关联流动法则,在空间状态下基于M-C准则导出一种新的屈服准则——双圆锥准则.该准则与M-C准则所得的塑性体应变增量完全相等,其特定的12条子午线与M-C准则等效,并体现了中间应力对屈服的影响.把双圆锥准则与有限元强度折减系数法结合,通过对c、φ的等效替换,利用ANSYS通用程序进行边坡稳定分析,所得结果与极限平衡法吻合良好. |
| 关键词: M-C准则 双圆锥屈服准则 非关联流动法则 塑性体应变增量 有限元强度折减系数法 D-P准则 |
| DOI： |
| 投稿时间：2004-03-25 |
| 基金项目:国家自然科学基金(50068001)、中国博士后研究基金、广西自然科学基金(0339017)和桂教科研字2002第316号资助项目。 |
|
| The Double-conic Yield Criterion Theory and Its Application in Engieering |
|
Xie Xiaoli1,2
|
| (1.College of Civil Architectual Engineering, Guangxi University, 100 Daxuelu, Nanning, Guangxi, 530004, China;2.State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, China) |
| Abstract: |
| A new yield criterion in 3-D space——the double-conic yield criterion based on the Mohr-Coulomb criterion by inducing similar angle and using non-associated flow rule was deduced.The plastic volume strain increments obtained by the Mohr-Coulomb criterion and the conic yield criterion are completely equal.The twelve given meridians of the latter equal the former,furthermore,the latter embodies the influence of medial stress to yield.Connecting the conic yield criterion with strength reduction FEM,the safety factors obtained by FEM are fairly close to the results of conventional equilibrium method. |
| Key words: Mohr-Coulomb criterion double-conic yield criterion non-associated flow rule plastic volume strain increment strength reduction by FEM Drucker-Prager criterion |
