中央翼复合材料后梁大开口补强设计与分析

摘要

复合材料作为一种优良的航空材料，具有比强度高、比刚度大，材料力学性能可设计等优点。复合材料中央翼后梁因制造性和维护性要求需要开孔，由于复合材料各向异性的特点，其开口加强结构设计比金属结构更为复杂。通过中央翼复合材料后梁大开口设计并开展试验研究，对飞机中央翼复合材料后梁开口结构设计提供技术支持。%Composite as excellent aviation material is widely used due to its high intensity, stiffness and designa-ble performance. In order to satisfy manufacture process and maintain requirement ,the center wing rear spar needs to open hole. The strengthening structure on composite is more complex than that on metal structure because of composite material anisotropic characteristics. This paper describes large opening design on composite and verifies with experiments. The research can provide technical support for the large opening design on the rear spar of com-posite center wing.