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Measurement of Road Profile and Study Its Effect on Vehicle Durability and Ride

机译：道路剖面测量并研究其对车辆耐用性和骑行的影响

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Road roughness induces dynamic loads on vehicles, which causes fatigue damage as a result. Design of vehicle for durability is one of the key steps during vehicle development process. Vehicle durability is verified on test tracks, on test rigs, or, increasingly, by computer simulations. Does the test represent real-life vehicle usage? How many times should a vehicle travel over the test tracks to verify the durability? How should input signals to test rigs be generated? For doing this kind of analysis, it is always required to measure the vehicle response parameters such as wheel forces, axle and chassis acceleration, etc. These measurement-based approaches have high cost and are time-consuming. As these are vehicle-dependent parameters, exercises need to be repeated on each type/class of vehicle. Hence it is needed to identify and measure the parameter which is vehicle independent. It is commonly accepted that the road profile is the principle excitation to the vehicle. Therefore studies of understanding of actual road roughness are necessary to answer the key questions concerning these verification procedures and prediction of vehicle durability. In this regard, a research project was undertaken at ARAI to develop a system to measure the vehicle independent road profiles and study the effect of road roughness on vehicle durability and ride. This paper discuss about the findings of this research project. Along with these, this paper also speaks about methodology for analytical road-load predictions.
机译：道路粗糙度诱导车辆上的动态载荷，从而导致疲劳损坏。用于耐用性的车辆设计是车辆开发过程中的关键步骤之一。车辆耐用性在测试轨道上验证测试轨道，或者越来越多地通过计算机仿真。测试是否代表现实生活车辆使用量？车辆在测试轨道上行驶多少次以验证耐用性？如何生成将信号输入测试钻机？做这种分析的，它总是需要测量车辆响应的参数，如轮子上的力，轴和底盘加速度等。这些基于测量的方法具有成本高，耗费时间。由于这些是依赖于车辆依赖的参数，因此需要在每种类型/类车辆上重复运动。因此，需要识别和测量车辆独立的参数。通常接受道路轮廓是车辆的原理激发。因此，有必要研究对实际道路粗糙度的理解，以回答有关这些验证程序和车辆耐用性预测的关键问题。在这方面，在Arai开展了一个研究项目，开发一个衡量车辆独立公路型材的系统，并研究道路粗糙度对车辆耐用性和骑行的影响。本文讨论了该研究项目的结果。除此之外，本文还谈谈了分析道路负荷预测的方法论。

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