摘要
本文提出在空间管接头部位采用多面体柔性单元．该单元的刚度通过对接头局部柔度阵［ＬＪＦ］进行适当的变换来确定．以一个空间平台结构的内力、变形以及接头的应力集中系数，与刚性接头下的计算结果进行了比较．结果表明，对空间管状结构总体分析，考虑接头的局部柔性是很有必要的．
A polyhedral element for the multiplanar tubular joint is suggested. The stiffness matrix of polyhedron of the flexible joint is formulated based on the local flexibility factor matrix and coordinate transformation. An off shore jacket is chosen as a numerical example.The computed results show the great effect of local flexibility of the multiplanar tubular joint on the internal forces,and on the combination of loads,which will reduce the stress concentration of the joints. Hence the consideration of flexibility in the global spatial structural analysis is necessary and important.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
1994年第5期9-15,共7页
Journal of Shanghai Jiaotong University
基金
国家教委博士点基金
国家自然科学基金
关键词
接头
局部柔性
海上平台
空间结构
offshore platform,multiplanar tubular joints,local flexibility,stress analysis
