LIGHTWEIGHT BODY STRUCTURE OF CITY BUS BASED ON TOPOLOGY OPTIMIZATION AND SENSITIVITY ANALYSIS

DING MingLiang; YAN YunBing; YANG Yong; CHEN Tao; ZHENG ZhiYang; SHEN Qi

doi:10.16579/j.issn.1001.9669.2018.02.018

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LIGHTWEIGHT BODY STRUCTURE OF CITY BUS BASED ON TOPOLOGY OPTIMIZATION AND SENSITIVITY ANALYSIS

更新时间：2022-09-22

- LIGHTWEIGHT BODY STRUCTURE OF CITY BUS BASED ON TOPOLOGY OPTIMIZATION AND SENSITIVITY ANALYSIS
- Journal of Mechanical Strength Vol. 40, Issue 2, Pages: 363-369(2018)
- 作者机构：
  
  1. 武汉科技大学汽车与交通工程学院
  2. 长江职业学院机电汽车学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2018.02.018
  CLC：
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DING MingLiang, YAN YunBing, YANG Yong, et al. LIGHTWEIGHT BODY STRUCTURE OF CITY BUS BASED ON TOPOLOGY OPTIMIZATION AND SENSITIVITY ANALYSIS. [J]. 40(2):363-369(2018)
DOI：

DING MingLiang, YAN YunBing, YANG Yong, et al. LIGHTWEIGHT BODY STRUCTURE OF CITY BUS BASED ON TOPOLOGY OPTIMIZATION AND SENSITIVITY ANALYSIS. [J]. 40(2):363-369(2018) DOI： 10.16579/j.issn.1001.9669.2018.02.018.

摘要

运用有限元思想,采用优化设计方法,对某客车公司12 m公交车车身骨架进行了轻量化研究。以建立的车身骨架有限元模型为基础,进行了水平弯曲、极限扭转工况以及自由模态的模拟,分析了骨架的静动态特性。以骨架的一阶弯曲频率、一阶扭转频率、弯曲柔度以及扭转柔度为约束条件,以体积最小为目标函数,对骨架进行了拓扑优化。以拓扑优化结果为依据,选取371组杆件为设计变量,对骨架进行了灵敏度分析。根据拓扑优化和灵敏度分析的结果,结合企业对定型产品的规定要求以及钢结构材料的国标标准,提出了车身骨架的轻量化方案,使骨架质量减轻了240 kg。与原骨架相比,新骨架保持了振动特性,强度性能明显改善,实现了客车车身骨架轻量化目标。

Abstract

Based on the finite element thought and optimization design method,the research of lightweight on the 12 meter bus body frame of a manufacturer had been made. By establishing finite element model of the body frame,horizontal bending and torsion limit of it had been simulated. Through free modal of bus body frame simulated,static and dynamic characteristics of frame had been analyzed. Taking first order bending,torsion frequency of the frame,bending and torsional flexibility as constraint conditions and the minimum volume as the objective function,to analysis topology optimization of it. That based on the results of topology optimization,selecting 371 groups of bars as design variables to have sensitivity analysis for the frame. According to the result of topology optimization and sensitivity analysis,combining the regulation of company for finalize the design product,lightweight of body frame has been put forward,which made skeleton quality reduced by 240 kg. Compared with original frame,vibration characteristics of the new one have been maintained,and strength improved significantly. Achieving lightweight goal of the bus body frame.

关键词

公交车柔度拓扑优化灵敏度分析轻量化

Keywords

BusComplianceTopology optimizationSensitivity analysisLightweight

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