RESEARCH ON THE RELATIONSHIP BETWEEN LOAD ANALYSIS METHOD AND FATIGUE OF LOWER CONTROL ARM

DU Jian; YU RenJie; XIAO Pan; DONG GuoJiang

doi:10.16579/j.issn.1001.9669.2021.04.025

您当前的位置：

首页 >

文章列表页 >

RESEARCH ON THE RELATIONSHIP BETWEEN LOAD ANALYSIS METHOD AND FATIGUE OF LOWER CONTROL ARM

更新时间：2022-09-22

- RESEARCH ON THE RELATIONSHIP BETWEEN LOAD ANALYSIS METHOD AND FATIGUE OF LOWER CONTROL ARM
- Journal of Mechanical Strength Vol. 43, Issue 4, Pages: 945-954(2021)
- 作者机构：
  
  1. 中国汽车工程研究院股份有限公司
  2. 重庆市汽车底盘性能工程技术研究中心
  3. 河北省特种运载装备重点实验室(燕山大学)
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2021.04.025
  CLC：
扫描看全文
DU Jian, YU RenJie, XIAO Pan, et al. RESEARCH ON THE RELATIONSHIP BETWEEN LOAD ANALYSIS METHOD AND FATIGUE OF LOWER CONTROL ARM. [J]. 43(4):945-954(2021)
DOI：

DU Jian, YU RenJie, XIAO Pan, et al. RESEARCH ON THE RELATIONSHIP BETWEEN LOAD ANALYSIS METHOD AND FATIGUE OF LOWER CONTROL ARM. [J]. 43(4):945-954(2021) DOI： 10.16579/j.issn.1001.9669.2021.04.025.

摘要

以试验场实车实测信号为基础,以悬架K&C试验与整车操纵性试验标定整车多体动力学模型为载体,探究虚拟路面法、虚拟迭代法、约束加载法对汽车下摆臂损伤影响规律。通过自主设计的车载式道路几何谱采集设备对试验场路面激光扫描,插值重构出CRG格式的三维虚拟路面,在时域与频域对比仿真与实测六分力,验证了虚拟路面与轮胎模型的准确性;在时域与频域两方面对比分析轮心垂向加速度的仿真与实测差别,进而评价虚拟路面法、虚拟迭代法、约束加载法的精度。结果表明,虚拟迭代法精度最高,约束加载法精度较差;从疲劳仿真角度分析影响,虚拟迭代法与虚拟路面法对下摆臂的损伤分布基本一致,约束车身法较前两者有较大差异,且更为保守;三种载荷分析方法下的下摆臂仿真结果满足试验场耐久规范要求,未发生疲劳破坏,与室内台架试验结果保持一致。

Abstract

To explore the influence of virtual road surface method,virtual iteration method and fixed body method on the damage of lower control arm,the data from the test site was used. The accuracy of vehicle multi-body dynamics model was verified by suspension K＆C test and vehicle controllability and stability test. The six-component force signal of wheel center simulation value was compared with test value in the time domain and the frequency domain. The analysis results show the accuracy of 3 D virtual road and tire model; Comparison of simulation value of three methods and test value of the vertical acceleration of the wheel center shows virtual iteration method has the highest precision,and fixed body method has the worst precision. From the perspective of fatigue simulation,the results show that virtual iteration method and virtual road surface method have the same damage distribution to lower control arm. Fixed body method is quite different from the two,and is more conservative. The simulation results of lower control arm under the three load methods meet the durability of the test field.,which was consistent with the test results of indoor bench.

关键词

多体动力学三维虚拟路面虚拟迭代疲劳损伤

Keywords

Multi-body dynamics3D virtual road surfaceVirtual iteration methodFatigue damage

references

Views

157

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

FATIGUE FRACTURE ANALYSIS OF BRASS OSCILLATOR WIRE OF VERTICAL LOG-PERIODIC ANTENNAZHENG DEZHI SONG ZONGFENG LIANG HANXIN

THE LOAD SPECTRUM ACQUISITION OF LIGHT BUS BODY BASED ON MULTI-BODY DYNAMICS MODEL AND FATIGUE LIFE EVALUATION

EXTRACTION AND VERIFICATION OF LOAD SPECTRUM OF STEERING KNUCLE BASED ON VIRTUAL ITERATION METHOD

RESEARCH ON THE CONTACT STRESS OF ROLLS AND FATIGUE DAMAGE DISTRIBUTION OF BACKUP ROLL IN FOUR HIGH PC MILL

FATIGUE ANALYSIS OF PITCH BEARING AND HUB CONNECTION BOLT IN MEGAWATT WIND TURBINE

Related Author

No data

Related Institution

China Research Institute of Radio Wave Propagation

Product R＆D Institute,Jiangling Motors Co.,Ltd.

CITIC Dicastal Co.,Ltd.

College of Vehicle and Energy,Yanshan University,Hebei Key Laboratory of Special Delivery Equipment

College of Mechanical and Vehicle Engineering,Taiyuan University of Technology

⁰