横向载荷作用下夹层梁力学性能分析  

Elastic analysis of sandwich beams subjected to transverse load

作　　者：石勇[1] 朱锡[1] 梅志远[1] 

机构地区：[1]海军工程大学船舶与海洋工程系

出　　处：《船舶力学》2008年第4期624-628,共5页Journal of Ship Mechanics

摘　　要：在经典的梁弯曲理论基础上,通过对横向载荷作用下的夹层梁微元的受力分析,建立了夹层梁的力平衡方程和各层之间的变形协调方程,用解析的方法求出了表层正应力和层间剪应力表达式,并与三维有限元计算结果进行了比较,应力值的大小和分布都吻合较好。另外,还应用上述的解析法,讨论了夹芯的剪切模量、厚度对夹层梁抗弯刚度和层间剪应力的影响。Based on classic theories of beam bending, equilibrium of forces and relation of deformations of different layers is set by static analysis to infinitesimal element of sandwich beams subjected to transverse load. A simple elastic solution was developed for predicting the axial and shear stress distribution in the beams. 3D-FEM was used to validate the theory. On the other hand, the influence of the shear modulus and thickness of bonding layer on bending stiffness and interlayer shear was discussed. The results can guide the strength and stiffness design of the laminated structures.

关 键 词：夹层梁 应力分析 力学性能 解析法 有限元法 

分 类 号：U661.4[交通运输工程—船舶及航道工程]