复杂多边形蜂窝柔性蒙皮非线性行为数值分析  

Numerical analysis of nonlinear behavior of complex polygonal honeycomb flexible skin

作　　者：艾森[1] 郭瑜超[1] 张长兴 王立凯[1] 常亮[1] AI Sen;GUO Yuchao;ZHANG Changxing;WANG Likai;CHANG Liang(National Key Laboratory of Strength and Structural Integrity,Aircraft Strength Research Institute of China,Xi’an 710065,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,西安710065

出　　处：《计算机辅助工程》2024年第2期61-65,共5页Computer Aided Engineering

基　　金：陕西省重点研发计划项目(2022ZDLGY02-08,2022ZDLGY02-03);民机专项(MJZ3-2N21)。

摘　　要：对复杂多边形蜂窝柔性蒙皮结构进行数值仿真,研究在拉伸、剪切、扭转以及弯曲载荷下的柔性蜂窝非线性变形行为,并对无橡胶表层、单侧橡胶表层和双侧橡胶表层的变形及强度进行分析。结果表明:无橡胶表层蜂窝可能在较小载荷下产生较大变形;单侧橡胶表层易使结构不对称,可能导致剪切载荷、扭转载荷下的变形不对称;双侧橡胶表层对抑制结构变形有明显作用;加入橡胶表层可能会使原本零泊松比或负泊松比效应的蜂窝柔性蒙皮表现出正泊松比的情况。The numerical simulation of flexible skin structure based on complex polygon honeycomb is carried out to study the nonlinear deformation behavior of flexible honeycomb under tensile,shear,torsion and bending loads,and the deformation and strength of structures with no rubber layer,unilateral rubber layer,and bilateral rubber layer are analyzed.The results show that honeycombs without rubber layers may undergo significant deformation under relatively small loads.A unilateral rubber layer may cause structural asymmetry,potentially leading to asymmetric deformation under shear and torsional loads.Bilateral rubber layers play a significant role in restraining the structure.The addition of rubber layers may result in honeycomb flexible skins,which originally exhibit zero Poisson’s ratio or negative Poisson’ratio effects,showing positive Poisson’s ratio behavior.

关 键 词：变体飞行器 蜂窝 柔性蒙皮 橡胶 非线性行为 数值分析 泊松比 

分 类 号：V214.6[航空宇航科学与技术—航空宇航推进理论与工程] TP391.9[自动化与计算机技术—计算机应用技术]