摘要
提出了基于单层的特征曲线法,利用Patran/Nastran有限元软件对复合材料机械连接接头强度进行了分析计算。根据提出的基于单层的数值特征曲线法,各个角度铺层的特征长度采用数值方法分别计算,根据各层的特征曲线计算各层的破坏载荷,最后确定接头的破坏载荷。通过算例分析,计算结果跟试验值吻合很好,较基于层合板特征曲线法所得结果更精确,说明了该方法的有效性。
An improved numerical characteristic curve method based on ply is proposed to calculate the load-carrying capacity of composite material bolted joints, by using the finite element software Patran/Nastran. According the method proposed here, characteristic lengths of different plies are calculated individually by numerical method, combing characteristic curve of different plies and the failure criteria, the failure load of the composite mechanical joints are calculated. Good agreement was found among the results of the improved characteristic curve, the original characteristic curve, and the test.
出处
《飞机设计》
2008年第2期41-45,共5页
Aircraft Design
关键词
特征曲线
强度分析
复合材料
接头
characteristic curve method
Strength analysis
composite material
joint
