In-situ source path contribution analysis of structure borne road noise
In-situ source path contribution analysis of structure borne road noise
复制标题
DOI：
10.1016/j.jsv.2013.05.031
复制
发表时间：
2013-11
影响因子：
4.7
通讯作者：
A. Elliott;A. Moorhouse;T. Huntley;S. Tate
中科院分区：
文献类型：
--
作者：
A. Elliott;A. Moorhouse;T. Huntley;S. Tate
源路径贡献（SPC）分析，也称为传递路径分析（TPA），是一种广泛用于汽车行业的噪声和振动源排序技术。已知SPC方法提供可靠的诊断信息，但应用起来很耗时。在本文中，一个更快的SPC方法，允许所有的测量进行原位概述和测试。为了验证的目的，一个经典的例子，包括车辆的悬挂系统（被认为是一个振动源）连接到车身（接收器）进行了分析。据发现，结构承载的车辆内的噪声可以很好地预测无论是传统的或新的原位SPC方法，这两种方法给出了相同的诊断信息的路径贡献的秩排序。因此，新的原位方法提供的结果至少与传统的逆SPC方法一样可靠，但在减少测试时间、数据的可转移性和源-接收器接口位置的灵活性方面具有显著的实际优势。一个额外的调查还表明，包括旋转运动和力矩的分析的可行性，它表明，可以实现作为一个结果，提高精度。
Source-path-contribution (SPC) analysis, also known as transfer path analysis (TPA), is a technique widely used in the automotive industry for rank ordering noise and vibration sources. The SPC approach is known to provide reliable diagnostic information but is time consuming to apply. In this paper, a faster SPC approach that allows all measurements to be performed in-situ is outlined and tested. For validation purposes a classic example consisting of a vehicle's suspension system (considered a vibration source) attached to a vehicle body (receiver) is analysed. It is found that structure borne noise inside the vehicle can be predicted well by either the conventional or the novel in-situ SPC approaches and that both methods give the same diagnostic information in terms of the rank ordering of path contributions. Thus, the new in-situ approach provides results at least as reliable as the conventional inverse SPC approach but has significant practical advantages in terms of reduced test time, transferability of data and flexibility in the location of the source–receiver interface. An additional investigation also demonstrates the feasibility of including rotational motions and moments in the analysis and it is shown that improved accuracy can be achieved as a result.