| 刘瑜瑾,王毅,段凯欣,张凯,胡玉倩.结合虚拟迭代技术的整车级道路模拟试验方法[J].装备环境工程,2020,17(10):94-102. LIU Yu-jin,WANG Yi,DUAN Kai-xin,ZHANG Kai,HU Yu-qian.Complete Vehicle Level Road Simulation Test Method Based on Multi-body Virtual Iteration[J].Equipment Environmental Engineering,2020,17(10):94-102. |
| 结合虚拟迭代技术的整车级道路模拟试验方法 |
| Complete Vehicle Level Road Simulation Test Method Based on Multi-body Virtual Iteration |
| 投稿时间：2020-07-20 修订日期：2020-08-05 |
| DOI：10.7643/issn.1672-9242.2020.10.015 |
| 中文关键词: 道路模拟试验 模态分析 多体动力学 虚拟迭代 疲劳耐久 雨流计数 试验场载荷谱 加速试验 多轴振动耐久 |
| 英文关键词:road simulation test modal analysis multi-body virtual iteration fatigue durability rain flow counting test field load spectrum acceleration test multi-axle vibration durability test |
| 基金项目:福田戴姆勒项目管理计字[2018]第192号 |
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| Author | Institution |
| LIU Yu-jin | Beijing Foton Daimler Automobile Co., Ltd, Beijing 101400, China |
| WANG Yi | Beijing Foton Daimler Automobile Co., Ltd, Beijing 101400, China |
| DUAN Kai-xin | Beijing Foton Daimler Automobile Co., Ltd, Beijing 101400, China |
| ZHANG Kai | Beijing Foton Daimler Automobile Co., Ltd, Beijing 101400, China |
| HU Yu-qian | Beijing Foton Daimler Automobile Co., Ltd, Beijing 101400, China |
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| 中文摘要: |
| 目的 提出一种基于试验场实采道路载荷谱，通过虚拟迭代技术修正台架试验动力学模型，从而实现多系统的“整车级”道路模拟试验的方法。方法 围绕台架关联试验场坏路，基于累积损伤模型、四点雨流计数法和模态分析展开研究，通过道路载荷谱的采集，预处理、压缩，在台架上复现零部件于整车上的运动姿态、失效形式与模态振型。最终完成以整车道路载荷谱为期望信号的台架迭代，以虚拟迭代为指导的模型修正，建立车辆道路时序信号与试验台架加载谱的相关性转化映射关系，执行基于液压伺服七轴试验台的多轴耐久试验，并实现以计算机模态分析、疲劳分析为指导的联合验证。结果 各零部件的试验结果为合格，与试验场一致。实现了多系统的同时验证，准确复现待测系统的运动姿态、失效形式及模态信号。结论 该试验方法建立起了整车级道路模拟试验标准，即通过虚拟迭代试验技术调整台架试验的动力学模型，为多系统道路模拟试验迭代不收敛的情况提出了解决方案。 |
| 英文摘要: |
| The work aims to propose a method of modifying the dynamic model of bench test based on the road load spectrum collected from the test field, so as to realize the “complete vehicle level” road simulation test of multi-system. Based on cumulative damage model, four-point rain flow counting method and modal analysis, the research was carried out around the bad road in the test field associated with the bench. Through the collection of road load spectrum, pretreatment and compression, the motion posture, failure form and modal shape of parts on the complete vehicle were reproduced on the bench. Finally, the bench iteration with the road load spectrum of the complete vehicle as the expected signal was completed, the model was revised under the guidance of virtual iteration, the correlation transformation mapping relationship between the road time series signal of the vehicle and the load spectrum of the bench was established, the multi-axis endurance test based on the hydraulic servo seven-axis test bench was carried out, and the joint verification under the guidance of computer modal analysis and fatigue analysis was realized. The test results of all parts were qualified and consistent with the test field. Simultaneous verification of multi-system was realized, and the motion attitude, failure mode and modal information of the system to be tested were accurately reproduced. This test method establishes the standard of complete vehicle level road simulation test, that is, the dynamic model of bench test is adjusted by virtual iterative test technology, and the solution is proposed for the situation that the iteration of multi-system road simulation test does not converge. |
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