The elastic-plastic limit pressure of cylinder under yield criterion

摘要：

　　Elastic-plastic limit pressure(EPLP) of closed-end cylinders under internal pressure is derived, using a new yield criterion that depends on stress triaxiality and Lode angle. The von Mises, Tresca, twin-shear and Drucker-Prager yield criterions are encompassed in the new yield criterion for the EPLP. The results reveal that, with the increasing of the parameters of stress triaxiality and Lode angle, the EPLP decreases for cylinder with fixed outer-to-inner radius ratio(k). As k increases, the EPLP increases when the parameters of stress triaxiality and Lode angle are certain value. The parameter of Lode angle is much more important than the parameter of stress triaxiality affecting the EPLP of cylinders. The new yield criterion with smaller parameters of stress triaxiality and Lode angle is used instead of the conventional von Mises, Tresca, twin-shear and Drucker-Prager yield criterions in design, it can lead to substantial saving the material required. While the new yield criterion with larger parameters of stress triaxiality and Lode angle is used in design, it can make the design more safe and reliable.

关键词： Closed-end cylinder New yield criterion Stress triaxiality Lode angle

作者: Xiaoyu Liu Zheng Yang Shanshan Huang

作者单位: Department of Civil Engineering,Xian Jiaotong University,Xian 710049,China

会议类型: 国际会议

会议名称: 第13届国际断裂大会(ICF2013)

会议地点: 北京

会议语种:英文

页码: 1-6

在线出版日期: 2013-06-16（万方平台首次上网日期，不代表论文的发表时间）