纯电动环卫车电池托架的轻量化设计
The lightweight research on battery bracket of electric sanitation vehicle
杨布尧 1陈江义 1王婷婷 1秦东晨1
作者信息
- 1. 郑州大学 机械工程学院,郑州 450001
- 折叠
摘要
轻量化是提升纯电动环卫车续航里程及工作时间的重要方式,其中电池托架是承载电池模组的重要结构部件.为探究更有效的构件布置方式,建立电池托架的有限元模型,并使用拓扑优化方法得到改进结构,使电池托架在各工况下的位移和应力显著下降.为进一步减轻质量,采用Hammersley试验方法对模型中各构件的壁厚进行采样;基于采样数据,使用2种策略的自适应响应面法对主要构件进行尺寸优化,在满足应力及位移的许用要求下,得到优化设计方案,质量减轻40％,实现了轻量化目标.
Abstract
The automobile industry sees vehicles become more lightweight.For sanitation vehicles, a lightweight design significantly improves driving cycle and working time.Battery bracket, consisting of frame structure, as the main component, bears the weight of battery packs.In this study, a FEM model of battery bracket is set up by Hypermesh.To seek a more efficient distribution of section material, the topological optimization method is applied to the FEM model.According to the topology structure, a proper structure which has lower stress and displacement is built.To further cut the weight, a design of experiment(DOE) using Hammersley sampling method is applied on the FEM model.Based on the data of DOE, two different approaches are employed in ARSM size optimization of bracket.While matching the constraints of displacement and stress, an optimal solution cuts the weight by 40％.
关键词
纯电动环卫车/电池托架/轻量化设计/有限元分析/试验设计Key words
sanitation vehicle/battery bracket/lightweight design/finite element method(FEM)/design of experiment(DOE)引用本文复制引用
基金项目
国家重点研发计划(2018YFB0106204)
出版年
2024
国家科技期刊平台
NSTL
万方数据