摘要
基于Mindlin一阶剪切变形理论,使用边光滑有限元方法 ES-FEM对复合材料层合板的自由振动进行分析。计算系统总体刚度矩阵时在构造的光滑域内对应变进行光滑操作,这样得到的刚度矩阵改善了有限元方法过刚的数值缺陷。数值计算表明,与有限元方法相比,光滑有限元方法精度更高。通过参数分析,讨论了不同铺设层数和铺设角的复合材料反对称角铺设层合板基频的变化规律。
Based on the Mindlin first order shear deformation theory, the edge-based smoothed finite element method （ES-FEM） was used to analysis the free vibration of composite laminated plates. In the ES-FEM, the system global stiffness matrix was computed using strains smoothed over the smoothing domains associated with edges of the element. Numerical results demonstrated that ES-FEM achieves higher accuracy. The effect of layers number and lamination angle on the nature frequencies of composite anti-symmetric angle-ply laminated plate was studied.
出处
《船海工程》
2013年第3期21-24,共4页
Ship & Ocean Engineering
