Theoretical prediction for effective properties and progressive failure of textile composites:a generalized multi-scale approach

作     者：Haoyuan Dang Peng Liu Yinxiao Zhang Zhenqiang Zhao Liyong Tong Chao Zhang Yulong Li Haoyuan Dang;Peng Liu;Yinxiao Zhang;Zhenqiang Zhao;Liyong Tong;Chao Zhang;Yulong Li

作者机构：Department of Aeronautical Structure EngineeringNorthwestern Polytechnical UniversityXi’an 710072 China 2 Shaanxi Key Laboratory of Impact Dynamics and Its Engineering ApplicationsXi’an 710072 China 3 Joint International Research Laboratory of Impact Dynamics and Its Engineering ApplicationsXi’an 710072 China 4 School of ScienceHarbin Institute of TechnologyShenzhen 518055 China 5 School of AerospaceMechanical and Mechatronic EngineeringThe University of SydneySydneyNSW 2006Australia 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：2021年第37卷第8期

页      面：1222-1244,I0001页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Nature Science Foundation of China(Grant Nos.11772267,12002111) the China Postdoctoral Science Foundation(Grant No.2020M681101) the Shaanxi Key Research and Development Program for International Cooperation and Exchanges(Grant 2019KW-020) the 111 Project(Grant BP0719007). 

主　　题：Textile composites Analytical model Series-parallel model Damage mechanics Strength 

摘      要：A generalized analytical model is developed to predict progressive failure behavior of several types of textile composites,including plain weave composites,twill weave composites,two-dimensional tri-axially braided composites and warpreinforced 2.5-dimensional braided composites.In this model,the unit cell(UC)of composite is firstly identified and reconstructed into a refined lamina structure with multiple equivalent lamina elements(ELEs)based on apt geometrical approximation and assumptions.Secondly,two-way coupled stress-strain responses within the UC(macro-scale)and ELE(meso-scale)are established through a universal series-parallel model(SPM).Finally,a progressive damage model,which consists of damage initiation criteria and a stiffness evolution strategy,is employed to predict damage behavior of the ELE.The analytical results including mechanical properties and progressive failure process are validated against the existing numerical and experimental ones in literature.The validated analytical model is then used to study the effects of global fiber volume fraction,braided angle,shear failure coefficient and selected failure criteria on stiffness,strength and failure process.The present results demonstrate the efficiency and generic capability of the present analytical model for predicting the mechanical responses of a range of textile composites.