| 三向碳/碳材料端头帽热应力的非线性有限元分析 |
| |
| 引用本文： | 顾震隆,郭勇平,吕文涛.三向碳/碳材料端头帽热应力的非线性有限元分析[J].复合材料学报,1988,5(4):49. |
| |
| 作者姓名： | 顾震隆 郭勇平 吕文涛 |
| |
| 作者单位： | 哈尔滨工业大学复合材料研究室，哈尔滨工业大学复合材料研究室，哈尔滨工业大学复合材料研究室 |
| |
| 摘 要： | 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.
|
| 收稿时间： | 1987-10-25 |
NONLINEAR FINITE ELEMENT ANALYSIS OF THERMAL STRESSES IN 3D C-C NOSETIP |
| |
| Gu Zhenlog,Guo Yungping,Lu Wentao.NONLINEAR FINITE ELEMENT ANALYSIS OF THERMAL STRESSES IN 3D C-C NOSETIP[J].Acta Materiae Compositae Sinica,1988,5(4):49. |
| |
| Authors: | Gu Zhenlog Guo Yungping Lu Wentao |
| |
| Affiliation: | Research Laboratory of Composite Materials Harbin Institute of Technology, Harbin, China |
| |
| Abstract: | Nosetip is an axisymmterical structure.Three. Dimensional Carbon-Carbon (3D C-C) is orthotropic,nonlinear material with different moduli in tension and in compression.SAAS III,which is usually used for thermal stress analvs.is of nosetiu made of 3D C-C, was modified in this paper.The modification consists of follow-ing aspects.The tensile or compressive modulus used for complex stress state is determined with the signs of fiber bundle stress instead of the sins of the principal stresses. Nonlinear shear stress-strain relationship is taken into consideration, Integrity check is also included in computation based on strength criterion established in authors' previous paper.Graphic plotting function is also improved. Influence of different weave on thermal stress distribution is also discussed in this paper. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《复合材料学报》浏览原始摘要信息 |
|
点击此处可从《复合材料学报》下载全文 |
|
