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用三个正交方向里纤维根数之比为2:2:3所编织成的三向碳/碳材料(2-2-33DC/C)制成的端头帽是双模量非线性轴对称结构。在双线性型、轴对称结构分析的程序SAASⅢ基础上进行了改造。对2-2-3 3D C/C端头帽进行非线性热应力分析。在改进的运序中,用材料主方向的受力状态来确定用拉伸还是压缩模量;考虑剪切非线性行为;增添了2-2-3 3DC/C材料的强度准则以检查结构的安全性;改进了绘图功能,除能画应力等高线外,增加了沿某一曲线,画出应力分布图的功能;改变2-2-3编织为2-2-4和2-2-5编织来讨论不同编织对热应力分布的影响。
A tip cap made of a three-way carbon / carbon material (2-2-33DC / C) braided in three orthogonal directions with a fiber count of 2: 2: 3 is a bimodal nonlinear shaft Symmetrical structure. In the bilinear type, axisymmetric structure analysis program SAAS Ⅲ was based on the transformation. Non-linear thermal stress analysis of 2-2-3 3D C / C end caps. In the improved procedure, the tensile or compressive modulus is determined by the stress state in the principal direction of the material; shear nonlinear behavior is considered; and the strength criterion for 2-2-3 3DC / C materials is added to check the structural Safety; improve the drawing capabilities, in addition to drawing stress contour lines, an increase along a curve, draw the stress distribution function; change 2-2-3 weaving 2-2-4 and 2-2- 5 braid to discuss the effects of different braids on the thermal stress distribution.