基于Jones-Nelson本构模型的C/C复合材料喉衬变形研究  

Analysis of C/C composites throat distortionbased on the Jones-Nelson constitutive model

作　　者：陈天宇[1] 史宏斌[1] 唐敏[1] 李耿[1] 许承海[2] 

机构地区：[1]中国航天科技集团公司四院四十一所,西安710025 [2]哈尔滨工业大学复合材料与结构研究所,哈尔滨150001

出　　处：《固体火箭技术》2017年第4期414-419,共6页Journal of Solid Rocket Technology

摘　　要：引入了应力-应变关系扩充理论和加权柔度修正理论,修正了Jones-Nelson本构模型,建立了基于Jones-Nelson模型的C/C复合材料本构关系,使得该模型可在考虑材料各向异性、拉压双模量、损伤演化特征的情况下,用于表征任意拉压混合载荷作用下的多向编织C/C复合材料的力学性能。在此基础上,进行了C/C复合材料喉衬变形研究,同时展开了喉衬应变场的测试。结果表明,考虑Jones-Nelson模型的计算结果和测试结果更吻合。Imports the extension theory of stress-strain relation and weighted slenderness theory, modifies Jones-Nelson constitutive model ,establishes the constitutive relationship of carbon/carbon composites based on the Jones-Nelson model, to express the material elastic constants accurately in any tension and compression of mixed loading. Based on the study, analyzes the distortion of the C/C composites throat,texted on the throat strain field at the same time.The results show that the simulation results which con- sidering the Jones-Nelson model coincide to the experiment results.

关 键 词：喉衬 C/C复合材料 Jones-Nelson本构模型 加权柔度理论 

分 类 号：V435.3[航空宇航科学与技术—航空宇航推进理论与工程]