复合材料开孔平板结构强度数值仿真及试验验证  

Numerical Simulation and Experimental Validation for Strength Characteristics of Composite Perforated Plate

作　　者：张承承[1] ZHANG Chengcheng(School of Energy and Power Engineering,Beihang University,Beijing 100191,China)

机构地区：[1]北京航空航天大学能源与动力工程学院,北京100191

出　　处：《材料导报》2021年第18期18190-18194,共5页Materials Reports

摘　　要：复合材料结构损伤是导致结构失效的重要原因之一。本工作基于有限元分析软件ANSYS,结合渐进损伤分析方法建立了非线性渐进损伤分析模型,分析了复合材料开孔平板结构在拉伸载荷作用下的损伤模式和强度特性,并用试验验证了程序的有效性。使用蒙特卡洛方法分析了结构响应点与复合材料刚度参数的相关性,得到了关键参数对开孔平板结构拉伸承载能力的影响。最后等比例加载拉伸和弯曲载荷,对比其极限载荷值的大小,分析了不同载荷耦合作用下结构强度特性研究的必要性。结果表明,该方法对复合材料构件的损伤形式和强度预测精确度比较高,并定量分析了拉伸方向的弹性模量对最大破坏载荷的影响,为误差分析提供了一定的研究基础。The development and aggregation of composite material structure damage is one of the important reasons to cause the structure failure.In this work,combining continuum damage analysis method and the finite element analysis software ANSYS,compiled the composite progressive damage analysis program.Based on the nonlinear progressive damage analysis model,the damage form and strength characteristics of composite perforated plate under tensile load was studied.Through the test,the method to accurately predicted the damage form and strength of composite hole wall structures accurately.Monte Carlo method applied to analyze the correlation between the stress value at the response point and the stiffness parameters,the influence of key parameters on the tensile bearing capacity of the perforated plate structure was obtained.Finally,the necessity of studying the structural strength characteristics under different coupling loads was analyzed.The results show that the method is more accurate in predicting the damage form and strength.Simultaneously,the influence of material parameters on the strength characteristics of the structure is studied,which provides a certain research basis for error analysis.

关 键 词：复合材料 渐进损伤 拉伸载荷 拉弯耦合 

分 类 号：TB33[一般工业技术—材料科学与工程]