芳纶蜂窝芯层对面外局部铺层结构的变形性能
Deformation performance of aramid honeycomb core layer on partial layup structure outside plane
卢政斌 1孙巍 1韦宁 1刘路 1李琼 1吕秀雷1
作者信息
- 1. 连云港中复连众复合材料集团有限公司,江苏 连云港 222000
- 折叠
摘要
在传统正六边形芯格结构的芳纶蜂窝夹层结构共固化成型过程中,蜂窝对面外局部铺层变化结构的变形配合能力是影响夹层结构件内部成型质量的重要因素.本工作通过建立有限元量化分析模型,结合典型结构实验验证,利用全实体建模及弹性力学板弯曲理论,采用数值方法分析蜂窝在面外的局部变形性能,探讨蜂窝厚度及外部压力等关键因素对蜂窝变形的影响,同时验证超蜂窝变形极限的局部型面配合方法.结果表明:以挠度变形拟合为核心的芳纶蜂窝变形能力量化分析模型,对蜂窝-铺层结构的匹配状态预测具有较好的适用性.对于蜂窝挠度拟合曲线斜率小于铺层过渡斜率的情况,蜂窝让位铣切对铺层过渡区的胶接质量提升具有积极影响,但让位铣切形式的不同不会产生明显的胶接质量差异,相关结果对于蜂窝夹层结构的结构设计及工艺设计具有一定参考价值.
Abstract
In the co-curing process of aramid honeycomb sandwich structures with traditional hexagonal core lattice structures,the deformation compatibility of honeycomb with locally varying structures outside the plane is an important factor affecting the internal forming quality of sandwich structures.This article analyzes the out-of-plane local deformation performance of honeycombs using numerical methods by establishing a finite element quantitative analysis model,combining typical structural experimental verification methods,using full-body modeling and elastic mechanics plate bending theory.It explores the influence of key factors such as honeycomb thickness and external pressure on honeycomb deformation,and verifies the local surface fitting method of super-honeycomb deformation limits.The results show that the quantitative analysis model of aramid honeycomb deformation capability,with deflection deformation fitting as the core,has good applicability for predicting the matching state of honeycomb-layered structures.For cases where the slope of the honeycomb deflection fitting curve is less than the transition slope of the layer,honeycomb yield milling has a positive impact on the bonding quality of the transition region of the layer,but different forms of yield milling do not produce significant differences in bonding quality.The relevant results have certain reference value for structural design and process design of honeycomb sandwich structures.
关键词
复合材料/夹层结构/蜂窝/变形/分析模型Key words
composites/sandwich/honeycomb/deformation/analytical modelling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