摘要
以总吸能量、峰值载荷、压缩位移为评价指标,构建以截面形状为正六边形的铝合金吸能盒模型,在吸能盒内腔加焊加强肋板,考虑其布置形式对吸能特性的影响,通过仿真分析,得到综合特性较优的方案。仿生节可以提高禾本植物茎的机械强度。将这一思想应用到吸能盒结构的二次设计,研究其对吸能盒特性的影响。在吸能量和压缩位移基本不变的情况下,峰值载荷在较优方案的基础上降低16.7%,使其碰撞变形模式更加合理,进一步使吸能盒的吸能特性更满足实际工程需要。
With total energy absorption, peak load and compression displacement as evaluation indexes to construct an aluminum alloy energy absorbing box model with a regular hexagonal cross-sectional shape. The influence of characteristics, through simulation analysis,a scheme with better comprehensive characteristics is obtained. Bionic knots can improve the mechanical strength of grass stems. This idea is applied to the secondary design of the energy-absorbing box structure to study its influence on the characteristics of the energyabsorbing box. Under the condition that the energy absorption and compression displacement are basically unchanged, the peak load is reduced by 16.7% on the basis of the better solution, which makes the collision deformation mode more reasonable, and further makes the energy absorption characteristics of the energy absorption box more suitable for actual engineering needs.
作者
成海飞
赵奉奎
张涌
Cheng Haifei;Zhao Fengkui;Zhang Yong(School of Automobile and Traffic Engineering,Nanjing Forestry University,Nanjing 210037,Jiangsu,China)
出处
《农业装备与车辆工程》
2023年第1期149-152,161,共5页
Agricultural Equipment & Vehicle Engineering
基金
南京林业大学青年科技创新基金“基于车载激光雷达的成熟小麦生物量在线估算方法研究”(CX2019018)。
关键词
正面碰撞
吸能盒
结构优化
仿生
frontal collision
energy-absorbing box
structural optimization
bionic
