Elastic imperfect tip-loaded cantilever cylinders of varying length
Elastic imperfect tip-loaded cantilever cylinders of varying length
复制标题
不同长度的弹性不完美尖端加载悬臂圆柱体
DOI:
10.1016/j.ijmecsci.2018.02.027
复制
发表时间:
2018
影响因子:
7.3
通讯作者:
Wang J
中科院分区:
文献类型:
--
作者:
Wang J
A number of recent publications have explored the crucial relationship between the length of a thin cylindrical shell and the influence of pre-buckling cross-sectional ovalisation on its nonlinear elastic buckling capacity under bending. However, the research thus far appears to have focused almost exclusively on uniform bending, with ovalisation under moment gradients largely neglected.This paper presents a comprehensive computational investigation into the nonlinear elastic buckling response of perfect and imperfect thin cantilever cylinders under global transverse shear. A complete range of practical lengths was investigated, from short cylinders which fail by shear buckling to very long ones which exhibit local meridional compression buckling with significant prior cross-section ovalisation. Two imperfection forms were applied depending on the length of the cylinder: the linear buckling eigenmode for short cylinders and a realistic weld depression imperfection for long cylinders. The weld depression imperfection was placed at the location where the cross-section of the perfect cylinder was found to undergo peak ovalisation under transverse shear, a location that approaches the base support with increasing length. Compact closed-form algebraic expressions are proposed to characterise the elastic buckling and ovalisation behaviour conservatively, suitable for direct application as design equations.This study contributes to complete the understanding of cylindrical structures of varying length where the dominant load case is global transverse shear, including multi-strake aerospace shells with short individual segments between stiffeners and long near-cylindrical wind-turbine support towers and chimneys under wind or seismic action.
登录
查看更多内容
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
S. Matsuura;Hideharu Nakamura;K. Kokubo;S. Ogiso;H. Ohtsubo
通讯作者:
H. Ohtsubo
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
W. Schneider;R. Thiele
通讯作者:
R. Thiele
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
A. Sadowski;M. Rotter
通讯作者:
M. Rotter
影响因子:
4.8
作者:
Sadowski A
通讯作者:
Sadowski A
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
W. Schneider;R. Thiele
通讯作者:
R. Thiele