RESEARCH ON IN-PLANE INSTABILITY OF U-SHAPED BELLOWS SUBJECTED TO INTERNAL PRESSURE AND AXIAL DEFORMATION

摘要：

Stress and strain distributions in the U-shaped bellows acted by interna1 pressure-axial compression were investigated by nonlinear finite element analysis method (FEM). The calculation results indicated that the bellows’ in-plane instability rests with the plastic region expansion in bellows. The criterion for in-plane instability is defined that the plastic hinge line is formed in roots and the plastic region emerges in annular plates of bellows. The results obtained by theoretical analysis are in good agreement with experimental data. Considering the effect of strain accumulation on the critical load of the bellows acted by cyclic axial displacement, the in-plane instability critical loads curve can be illustrated in the internal pressure-axial compression coordinate system.

作者: CHEN Ye GU Boqin

作者单位: College of Mechanical and Power Engineering, Nanjing University of Technology, No.5 Xin Mofan Road, Nanjin,210009, China.

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）