摘要
甲壳虫外壳有着精巧复杂的构造。该文参照甲壳虫外壳中层间芯柱的微结构,设计出几个模型,利用ANSYS/LS-DYNA软件分析其耐撞性和抗冲击能力。然后改进原有模型的结构形态,使其更贴切甲壳虫外壳中小柱结构,缓冲吸能性能更好。将改进后的模型与圆管结构相对比,进行准静态和模拟冲击环境的分析。结果表明优化后的模型吸能量更多,压缩载荷更加稳定,抗冲击性能更好。可将其应用在结构防撞性和能量吸收装置中。
Beetles cuticles have delicate and complicated body structures.In this paper several models are developed based on the observation of microstructures of beetle cuticles.The analysis for capability of energy-absorbing of beetle cuticles are presented with the nonlinear finite element software ANSYS/LS-DYNA.The discussions on effects of structures and materials are provided.The structures of original models are improved to make them resemble the trabecular structure of beetle cuticles for larger energy absorptions.A comparison is carried out between the improved model and cylindrical tube in terms of static and dynamic axial impact responses.The results show that the improved model absorbs more energy and performs in more stability way than the tube.This makes it an excellent structure for the device of structural crashworthy and energy absorption.
出处
《工程力学》
EI
CSCD
北大核心
2011年第2期246-251,256,共7页
Engineering Mechanics
基金
国家自然科学基金项目(90816025,10721602)
国家重点基础研究发展计划项目(2006CB601205)
