缠绕复合材料喷管静力分析

本文对由一般曲线旋转得到的喷管进行了静力分析。文中讨论的喷管由缠绕复合材料构成,承受轴对称和非轴对称载荷作用。在采用有限元法分析时,通过Fourier转换将三维问题简化为二维求解。弹性矩阵中各参数采用合理假设只需由层状平面内三个弹性常数即可确定。文中给出缠绕复合材料喷管在内压和集中力作用下的位移分布算例,结果合理。本文推荐方法可供缠绕柔性喷管和其它类似结构分析时参考。

ELASTOSTATIC ANALYSIS OF LAMINATED COMPOSITE NOZZLES

The paper presents the elastostatic analysis of nozzles which are nade of laminated composite with carbon/carbon or carbon/silicone material and subjected to combination of axisymmetric and asymmetric loadings. The finite element procedure with complex Fourier transformation makes this 3-D problem an approximate 2-D one. While the following assumptions are used: (1) The axial and transverse shear moduli are taken to be equal; (2) The transversely isotropic medium is assumed to be imcompressible, the material matrix can be determined by two moduli coefficients and one poisson's constant in the layer. Solutions are shown for typical rocket nozzle subjected to the combination of the internal; pressure and the concentrated forces.The approach presented can be worth recommending for the analysis of the laminated nozzles and other similar structures.