变厚度复合材料构件的预制体建模方法  

Preform modeling method of composite components with variable thickness

作　　者：刘明琦 张盛[1] 侯佳文 高希光[1] 宋迎东[1,3] LIU Mingqi;ZHANG Sheng;HOU jiawen;GAO Xiguang;SONG Yingdong(Nanjing University of Aeronautics and Astronautics,Nanjing 210016;Chengdu Aircraft Industry(Group)Co.,Ltd.,Chengdu 610000;Harbin Engineering University,Harbin 150001)

机构地区：[1]南京航空航天大学,南京210016 [2]成都飞机工业(集团)有限责任公司,成都610000 [3]哈尔滨工程大学,哈尔滨150001

出　　处：《纤维复合材料》2025年第1期3-7,共5页Fiber Composites

基　　金：国家自然科学基金(52202098)。

摘　　要：针对编织复合材料内部的非周期性复杂结构,细观预制体模型是进行复合材料性能分析的基础。目前,编织复合材料变厚度结构的模型建立困难且通用性低,本文基于2.5D编织复合材料RVE模型,提出了一种基于映射关系的变厚度预制体参数化自动化建模方法。该方法考虑了纱线几何变化与预制体宏观特性,因此利用该方法建立了叶身结构预制体细观模型。结果表明,本文提出的建模方法有效反映了变厚度结构的细观结构,研究有助于此类结构的设计与分析。Aiming at the non-periodic complex structure in braided composites,the microscopic preform model is the basis for the performance analysis of composites.At present,it is difficult to establish the model of braided composites with variable thickness and its universality is low.Based on the 2.5D braided composites RVE model,this paper puts forward a parametric automatic modeling method of variable thickness preforms based on mapping relationship,which can consider the geometric changes of yarns and the macroscopic characteristics of preforms.By using this method,a micro-model of the blade body structure preform is established.The results show that the modeling method proposed in this paper can effectively reflect the micro-structure of the variable thickness structure,which is helpful for the design and analysis of this kind of structure.

关 键 词：叶身 预制体 变厚度 

分 类 号：TB3[一般工业技术—材料科学与工程]