一种复合材料柔性梁的响应计算方法

Method for Calculating Response of Composite Flexible Beams

建立了一种复合材料柔性梁的响应计算方法,将三维非线性梁分析解耦为二维线性剖面分析和一维非线性梁分析两部分。引入Danielson-Hodges广义应变定义,采用中等变形梁理论,考虑横向剪切和三维翘曲的影响,对梁结构进行了有限元分析。通过与Princeton梁实验数据、Minguet实验数据和大变形梁理论计算结果的对比,验证了本文计算方法的正确性和适用范围。

A response method for composite flexible beams is presented. The method extracts two sets of analyses from a 3-D nonlinear beam analysis： 2-D linear cross section analysis and 1-D nonlinear beam analysis. The Danielson-Hodges generalized strain measures are introduced. Based on moderate deflection beam theory, a finite element beam structural analysis including transverse shear and 3-D warping is established. Compared with the experimental data of Princeton beam, experimental data of Minguet＇s and computation values of beams under large deflection, results verify that the method is correct and suitable.