用于三维机织物预成形变形预测的各向异性超弹性本构模型  

An Anisotropic Hyperelastic Constitutive Model for Predicting Preforming Deformation of 3D Woven Fabrics

作　　者：刘闯[1] 黄天麟 邸嘉男 程晖[1] 梁彪 Liu Chuang;Huang Tianlin;Di Jia’nan;Cheng Hui;Liang Biao(Key Laboratory of Aircraft High Performance Assembly,Ministry of Industry and Information Technology,Northwestern Polytechnical University,Xi’an 710072,China;AECC Commercial Aircraft Engine Co.,Ltd.,Shanghai 201109,China)

机构地区：[1]西北工业大学飞行器高性能装配工业和信息化部重点实验室,陕西西安710072 [2]中国航发商用航空发动机有限责任公司,上海201109

出　　处：《航空科学技术》2024年第3期28-40,共13页Aeronautical Science & Technology

基　　金：航空科学基金(2020Z068053001)。

摘　　要：随着三维机织物逐渐广泛应用在航空发动机叶片、机匣等复杂曲面结构的制造方面,预测三维碳纤维机织物在曲面结构制造的预成形过程中的复杂变形行为对提升纤维结构的成形质量具有重要意义。基于连续介质力学理论,本文提出一种各向异性超弹性本构模型描述三维机织物在成形过程中由于大变形所引起的各向异性力学变形行为。通过三维机织物的变形试验,建立了应变能密度函数,获取了三维机织物材料参数,并通过偏轴拉伸、半球冲压预成形有限元仿真与试验对比,验证了本文提出的超弹性本构模型的有效性。超弹性本构模型的提出可对三维机织物成形的有限元仿真模型与成形工艺优化设计起指导作用。3D woven fabrics is gradually widely used in the manufacture of aero-engine blades,magazines and other complex curved structures.The complex deformation behavior of 3D dry-fiber woven fabrics in the preforming process was studied.Based on the theory of continuum medium mechanics,an anisotropic hyperelastic constitutive model was proposed to describe the anisotropic mechanical deformation behavior of 3D woven fabrics due to large deformations.The strain energy density functions were established by the deformation experiments of 3D woven fabrics.The material parameters of 3D woven fabrics are obtained,and the validity of the hyperelastic constitutive model proposed in this paper was verified by the finite element simulation and experiments of the bias-extension and the hemispherical stamping preforming.The hyperelastic constitutive model can play a guiding role in the finite element analysis model and the optimized design of the forming process of 3D woven fabrics.

关 键 词：三维机织物 预成形 超弹性本构模型 有限元仿真模型 

分 类 号：V261.97[航空宇航科学与技术—航空宇航制造工程]