On the collapse of inelastic thick-walled tubes under external pressure
On the collapse of inelastic thick-walled tubes under external pressure
复制标题
DOI：
10.1115/1.3231239
复制
发表时间：
1986-03
影响因子：
3
通讯作者：
M. Yeh;S. Kyriakides
中科院分区：
文献类型：
--
作者：
M. Yeh;S. Kyriakides
对长壁厚管在外压作用下的坍塌进行了实验和分析研究。给出了该问题的二维非线性表述。该公式足够通用，足以包括管截面的初始几何缺陷，如初始椭圆度和壁厚变化。此外，还考虑了残余应力和初始非弹性各向异性的影响。在D/t值为10 ~ 40的管子上进行了实验。在对所有参数进行正确建模的情况下，实验结果与理论结果吻合良好。研究了问题各参数对坍塌压力的影响。
The collapse of long thick-walled tubes under external pressure is studied both experimentally and analytically. A two-dimensional nonlinear formulation of the problem is presented. The formulation is general enough to include initial geometric imperfections of the tube cross section such as initial ovality and wall thickness variation. In addition the effects of residual stresses and of initial inelastic anisotropy are considered. Experiments on tubes with D/t values between 10 and 40 were carried out. Good agreement between experiments and theory is shown to occur provided all parameters are modeled correctly. A study of the effect of the various parameters of the problem on the collapse pressure is also presented.