介绍了一种纤维曲线铺放的变刚度复合材料层合板有限元建模方法.按照曲线铺放规律定义每一个单元的实常数,并对这种纤维曲线铺放层合板进行建模.在此基础上讨论了在弯曲和压缩失效两种不同边界条件下,采用Tsai-Wu失效准则,对其进行失效分析,验证其面内受力情况,计算最大的Tsai-Wu强度比倒数1/R.当1/R =1时,所施加的载荷为失效的临界载荷.对比两组纤维直线和纤维曲线的铺层算例,弯曲失效条件下临界失效载荷提高16％和21％,压缩失效条件下临界失效载荷提高51％和19％.纤维曲线铺放层合板有效提高了失效性能.
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