摘要
采用三维细观有限元模型,研究了复合材料-金属毛化连接区域的力学性能。通过在模型中引入保证单胞边界面的应力和位移周期连续的边界条件,分析了毛刺高度、毛化密度及复合材料铺层顺序对毛化区域弹性力学性能的影响。分析结果表明,毛刺分布密度越大毛化区域弹性模量越大,毛刺高度较小时毛化区域面内弹性模量较大、剪切模量较小,90°铺层比例对毛化区域弹性力学性能影响较大。研究表明,通过参数设计可获得较好的毛化连接属性。
Based on 3D micro FEM model,it analyzes the mechanical properties of lap area of composite-metalweld joints. In the 3D micro cell model,it defines the unified boundary conditions to guarantee the continuity of local displacements and stresses on cell boundaries,discusses the effect of distribution density of protrusions,protrusion height and stacking sequence of composite laminates on the elastic properties. Numerical results indicate that the higher distribution density of protrusions is with the higher elastic modulus and the lager height of protrusion the higher shear modulus. The proportion of 90 degree layers has great effect on the connection property. The meld joints could have better combining property by adjusting parameters.
出处
《机械设计与制造工程》
2015年第2期5-7,共3页
Machine Design and Manufacturing Engineering
基金
江苏省自然科学基金资助项目(BK20130784)
关键词
复合材料
毛化接头
力学性能
单胞模型
弹性模量
参数影响
composite
comeld joint
mechanical properties
unit cell
modulus of elasticity
parameter influence
