摘要
薄弱环节设置是复合材料吸能结构设计的关键技术之一,良好的薄弱环节设计可以使复合材料结构在碰撞中产生稳定的渐进压溃从而吸收较多的碰撞能量。文章详细阐述并讨论了复合材料吸能元件薄弱环节的几何特征、引发机制及薄弱环节对复合材料吸能元件轴向压溃性能的影响,并将现有的薄弱环节归纳为七种典型的形式。在此基础上,指出了今后需要进一步研究的课题,包括:应变率效应对薄弱环节引发机制及吸能元件轴向压溃性能的影响;T型薄弱环节的引发机制及其在复合材料圆管中的应用;SMA薄弱环节的原理和设计方法;三维编织复合材料结构元件的薄弱环节和轴向压溃性能。
Trigger is one of the key technologies for the design of composite structures with energy absorption capabilities.Properly designed triggers can make the composite structures produce stable crushing during impact,thus absorb more impact energy.In this paper,the geometry and mechanism of triggers,and the effect of trigger on the axial crushing behavior of composite components are described and discussed in detail.And the available triggers can be summed up in seven typical types.Based on this,some topics for further investigations are pointed out.They are：the influence of strain rate on the trigger mechanism and axial crushing behavior of composite components;the tulip trigger and its application to circular composite tubes;the principle and design method of the SMA（shape memory alloy） trigger;and the trigger and axial crushing behavior of 3D braided composite components.
出处
《船舶力学》
EI
北大核心
2011年第8期930-939,共10页
Journal of Ship Mechanics
基金
国家自然科学基金资助项目(50675100)
关键词
复合材料
薄壁结构
耐撞性
能量吸收
轴向压溃
薄弱环节
综述
composite materials
thin-walled structures
crashworthiness
energy absorption
axial crushing
trigger mechanism
review
