整车载荷相关性分析方法与道路模拟试验优化应用

栾世杰; 于佳伟; 郑松林

doi:10.13433/j.cnki.1003-8728.20200619

整车载荷相关性分析方法与道路模拟试验优化应用

doi: 10.13433/j.cnki.1003-8728.20200619

栾世杰^1,,
于佳伟²,
郑松林^{1, 3, ,}

1.
上海理工大学机械工程学院, 上海 200093
2.
上海机动车检测认证技术研究中心有限公司, 上海 201805
3.
上海理工大学机械工业汽车底盘零部件强度与可靠性评价重点实验室, 上海 200093

基金项目:

上海市自然科学基金项目 21ZR1428000

上海汽车工业科技发展基金项目 1740

详细信息

作者简介:
栾世杰(1977-), 讲师, 博士研究生, 研究方向为车辆载荷特性、结构耐久性快速评价, shijieluan@126.com

通讯作者:
郑松林, 教授, 博士生导师, zhengpinery@126.com

中图分类号: U461
计量
- 文章访问数: 84
- HTML全文浏览量: 14
- PDF下载量: 23
- 被引次数: 0
出版历程
- 收稿日期: 2021-06-10
- 刊出日期: 2021-12-05

Vehicle Load Correlation Analysis Method and Optimization Application of Road Simulation Test

LUAN Shijie^1
,,
YU Jiawei²,
ZHENG Songlin^{1, 3
, ,}

1.
College of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
2.
Shanghai Motor Vehicle Inspection Certification & Tech Innovation Center Co., Ltd., Shanghai 201805, China
3.
Machinery Industry Key Laboratory for Mechanical Strength & Reliability Evaluation of Auto Chassis Components, University of Shanghai for Science and Technology, Shanghai 200093, China

摘要

摘要: 整车多通道道路模拟试验是快速验证服役条件下车辆结构强度的重要试验方法，如何准确、高效地模拟车辆复杂结构多通道随机载荷谱是试验的关键难题。提出了基于载荷相关性分析的整车多通道载荷谱模拟的通道优选与调控方法。以试验车辆试验场实测载荷谱数据为基础，基于载荷谱频域相干系数分析方法，研究了在试验场特定道路工况条件下轮心六分力载荷谱与整车结构关键部位应变谱的相关性，总结了试验场特征道路工况下的轮心六分力损伤主导载荷谱，确定了迭代试验中多通道载荷模拟的优先级，实现了载荷模拟工作的降维。最后依据以上方法建立了整车多通道道路模拟试验，达到了较好的载荷模拟效果。论文研究成果可为整车及关键零部件多通道道路模拟试验的高效执行提供一定的借鉴。
- 道路模拟试验 /
- 载荷谱 /
- 相关性分析
Abstract: Vehicle multi-channel road-load-simulation test is a key method for fast validating vehicle structure strength under service condition. How to accurately and effectively simulate multi-channel random load spectra of the complicated vehicle structures is a crucial problem. In this paper, a load correlation analysis based optimized and control method for vehicle multi-channel load spectra simulation was proposed. Based on the proving ground recorded load spectra of test vehicle, a load spectra frequency-domain coherence analysis method was applied to study the correlation between the wheel hub six-component force loads spectra and the critical structure strain spectra under the proving ground specific road condition. The damage dominant loads spectra of wheel hub six-component forces under the proving ground specific road condition were identified. Therefore, the priority loads channels simulation of iteration test was determined, and dimensionality reduction of loads simulation work was realized. Finally, the vehicle multi-channel road-load-simulation test was conducted according to the present method, and well loads simulation effect was acquired. The research can provide reference for effectively implementation of other vehicle and components multi-channel road-load-simulation test.
- road-load-simulation test /
- load spectrum /
- correlation analysis

HTML全文

图 1 前副车架摆臂安装点的应变传感器布置

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图 2 异常尖峰信号识别(右前轮六分力F_z载荷通道)

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图 3 前副车架摆臂安装点实测应变载荷谱的预处理

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图 4 基于频域相干性/一致性法分析相关性的具体流程

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图 5 前副车架左前测点应变载荷谱的功率谱密度

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图 6 前副车架左前测点应变载荷谱与左前车轮六分力载荷谱的相干性系数图

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图 7 左后拖拽臂测点应变载荷谱的功率谱密度

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图 8 左后拖拽臂左前测点应变载荷谱与左后车轮六分力载荷谱的相干性系数图

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图 9 迭代试验基本流程

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图 10 ABS & TCS路况前副车架左前测点应变载荷通道的载荷模拟效果

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图 11 ABS & TCS左后拖拽臂测点应变载荷通道的载荷模拟效果

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