摘要
根据舵面结构特征和复合材料成型工艺特点,首先设计了4种旨在提高根部金属结构与复合材料蒙皮之间连接强度的复合材料舵面根部结构方案,并建立了三维有限元模型,然后对各方案舵面根部处进行了失效分析,确定了在复合材料蒙皮与金属骨架处搭接垫片并增加铆钉的设计方案,最后据此方案制备了复合材料舵面并进行了常温静强度和静热联合试验验证。结果表明:采用搭接垫片和胶铆混接的方式对骨架与蒙皮根部进行加强,可大大降低树脂连接区和骨架的应力水平,提高舵面的承载能力;常温静强试验发现,舵面在150%使用载荷下,无残余变形;高温和载荷联合作用下,舵面根部结构保持完整,符合结构设计要求,验证了设计方案的有效性。
According to the structure characteristics of the rudder and molding process of composite materials, four composite rudder schemes were designed to improve the joint strength between the metal frame and composite skin. Then the 3 D finite element(FE) model was established to analyze the static strength of each rudder scheme. Finally, the optimal scheme by adding the gasket and rivets at the junction between the composite skin and metal skeleton was determined. Based on this scheme, the composite rudder was fabricated by resin transfer mould(RTM) process. The room temperature static strength test and thermo-mechanical test under bending load were completed. The analysis results show that the stress of the resin junctional area and skeleton is reduced greatly when the skeleton and skin root are strengthened by adding gaskets and adhesive bolted joint, which improves the bearing capacity of the composite rudder significantly. The experimental results show that the composite rudder has no residual deformation under 150% of the service load at room temperature static strength test. Meanwhile, the rudder maintains the structural integrity and meets the structural design requirements under combined high temperature and load, which verifies the feasibility of the design scheme.
作者
庄羊澎
文子豪
江晟达
魏仲委
赵西帅
罗楚养
ZHUANG Yang-peng;WEN Zi-hao;JIANG Sheng-da;WEI Zhong-wei;ZHAO Xi-shuai;LUO Chu-yang(Center for Civil Aviation Composites,Donghua University,Shanghai 201620,China;China Airborne Missile Academy,Luoyang 471009,China)
出处
《复合材料科学与工程》
CAS
北大核心
2022年第2期45-51,共7页
Composites Science and Engineering
基金
航空科学基金(20180112008)
青年人才托举工程(2016QNRC001)
东华大学青年教师科研启动基金
上海市科技创新行动计划项目(19DZ1100300)。
关键词
复合材料
舵面根部
静热联合试验
有限元分析
composite
rudder
thermo-mechanical coupling test
finite element analysis
