复合材料典型结构拉弯复合静力试验研究  

Research on Tensile Bending Static Test of Typical Composite Structures

作　　者：傅威 杭超 FU Wei;HANG Chao(National Key Laboratory of Strength and Structural Integrity,Aircraft Strength Research Institute of China,Xi′an710065,Shaanxi,China)

机构地区：[1]中国飞机强度研究所,强度与结构完整性全国重点实验室,陕西西安710065

出　　处：《工程与试验》2024年第1期93-96,共4页Engineering and Test

摘　　要：大量航空复合材料结构承受着复合载荷,开展拉伸弯曲复合强度性能研究对结构的设计验证具有重要意义。本文以航空发动机复合材料叶片榫头结构为例,设计了针对榫头试验件的拉伸弯曲复合加载试验系统,开展了复合材料榫头的拉伸弯曲复合试验,采集榫头试验件在加载过程中的载荷、应变和位移,同时利用折线光路对榫头试验件进行了原位损伤监测。结果表明,榫头试验件在拉伸弯曲复合载荷下的典型失效模式为分层损伤,且分层损伤时刻榫头试验件的应变和位移均发生了明显的突变。A large number of aviation composite structures are subjected to complex loads,so it is of great significance to study the tensile bending composite strength performance for the design and verification of structures.Taking the rabbet structure of composite blade in aircraft engines as an example,a tensile and bending test system for the rabbet test piece is designed,and the tensile and bending test is carried out.The load,strain and displacement of the rabbet test pieces in the loading process are collected,and the in-situ damage of the rabbet is monitored by using the broken line optical path.The test results show that the typical failure mode of the rabbet test piece under the tensile and bending complex loads is delamination damage,and the strain and displacement of the rabbet test pieces change obviously at the time of delamination damage.

关 键 词：复合材料 典型结构 复合加载 载荷解耦 静力试验 

分 类 号：V216.1[航空宇航科学与技术—航空宇航推进理论与工程]