基于能量准则的复合材料层合板低速冲击近场动力学模拟  

Peridynamic modeling of composite laminate under low-velocity impact using energy-based criteria

作　　者：姜晓伟 汪海[2] 朱建辉[3] JIANG Xiaowei;WANG Hai;ZHU Jianhui(AECC Commercial Aircraft Engine CO.,LTD.,Shanghai 200241,China;School of Aeronautics and Astronautics,Shanghai Jiao Tong University,Shanghai 200240,China;College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]中国航发商用航空发动机有限责任公司,上海200241 [2]上海交通大学航空航天学院,上海200240 [3]南京航空航天大学航空学院,南京210016

出　　处：《复合材料学报》2024年第4期2126-2136,共11页Acta Materiae Compositae Sinica

摘　　要：近场动力学模拟复合材料层合板低速冲击损伤具有一定优势。本文在球型域常规态近场动力学复合材料模型基础上,建立了考虑时间步长下不同断裂混合比的能量失效判定准则,并开展了基于能量准则的复合材料层合板低速冲击近场动力学模拟。首先对复合材料低速冲击近场动力学模拟的模型刚度进行了验证,近场动力学模拟的冲击接触力、冲击速度及冲击位移与有限元结果具有较好的一致性。在此基础上,开展了复合材料低速冲击近场动力学损伤模拟,给出了冲击过程中复合材料层合板纤维断裂、基体开裂及分层损伤扩展过程。对比试验结果,近场动力学模拟的分层损伤面积和分层形状与试验结果具有较好的一致性,验证了所开展的基于能量准则的复合材料层合板低速冲击近场动力学模拟的有效性。Peridynamic(PD)theory has been proven to be of advantages in low-velocity impact modeling of composite laminate.Based on ordinary state-based PD composite spherical-horizon model,energy-based failure criteria was established,which considered mixed-mode fracture in each time step.PD modeling of composite laminate under low-velocity impact was conducted using the established energy-based criteria.Firstly,the modeling stiffness was validated.PD modeling impact load,impact velocity and impact displacement agree well with finite element method(FEM)results.Then,PD damage modeling of composite laminate under low-velocity impact was conducted,and the fiber breakage,matrix crack and delamination damage process were illustrated.Compared with test results,PD modeling delamination area and shape are in good accordance,which validates the conducted PD modeling of composite laminate under low-velocity impact using energy-based criteria.

关 键 词：复合材料 近场动力学 低速冲击 分层损伤 基体开裂 

分 类 号：TB330.1[一般工业技术—材料科学与工程]