用于柔性后缘的零泊松比蜂窝结构力学性能
Mechanical properties of honeycomb structure with zero Poisson's ratio for flexible trailing edge
周玥 1李博 1徐伟伟 1文友谊1
作者信息
- 1. 成都飞机工业(集团)有限责任公司,成都 610073
- 折叠
摘要
为给新型无缝柔性后缘结构方案提供技术支撑,通过理论分析和有限元仿真对正弦型、V型、分段正弦型及余弦型 4种新型零泊松比蜂窝结构的弹性性能进行比较研究,并对余弦蜂窝结构进行拉伸实验测试.据此设计基于二维变形零泊松比余弦蜂窝的柔性后缘,并对余弦蜂窝后缘段的弯曲性能进行仿真分析.结果表明,余弦蜂窝结构的面内弹性和受载应力状态优于其他三种蜂窝结构,其准线性应变可达 27.8%;通过参数调控可获得余弦蜂窝后缘段的优异弯曲性能,实现柔性后缘结构的大幅度弯曲变形,为新型柔性后缘结构的设计与分析提供参考.
Abstract
To provide technical support for the design of new seamless flexible trailing edge structures,a comparative study of the elastic properties of four novel zero Poisson's ratio honeycomb structures(sinusoidal-type,V-type,segmented sinusoidal-type and cosine-type)is conducted through theoretical analysis and finite element simulation.A tensile test on the cosine honeycomb is also carried out.Based on this,a flexible trailing edge based on a two-dimensional deformable zero Poisson's ratio cosine honeycomb was designed,and the bending performance of the cosine honeycomb trailing edge section is simulated and analyzed.The results show that the in-plane elasticity and stress state of the cosine honeycomb structure are superior to other three honeycomb structures.The quasi-linear strain of the cosine honeycomb achieves 27.8%.Excellent bending performance of cosine honeycomb segment can be achieved by parameter adjustment,thereby achieving significant bending deformation of the flexible trailing edge structure.This study can provide references for the design and analysis of novel flexible trailing edge structures.
关键词
柔性蜂窝/弹性性能/柔性后缘/结构变形/应力分析Key words
flexible honeycomb/elastic property/flexible trailing edge/structural deformation/stress analysis引用本文复制引用
出版年
2025
国家科技期刊平台
NSTL
万方数据