时空相关车辆道路的高效数值仿真

在阐述功率谱密度时域等效的道路模拟方法的原理、构造及单轮辙道路时序重构应用的基础上，结合车辆道路双轮辙时空相关特性，提出了双轮辙两相关随机过程的虚拟线性系统连接方法，建立了符合道路相干函数规律的传递关系，模拟再现了时空相关的双轮辙道路激励输入的时程样本，使得模型中同时包含了道路自功率谱和互功率谱的统计信息。仿真试验表明该方法具有高的保真性，适用于任意指定谱特征的随机道路模拟。

A New Approach to Numerical Simulation of the Vechicle Road Process with Temporal-spatial Correlation

A new approach to simulate numerically stochastic excitation from road irregularities, by using Inverse Fast Fourier Transfer (IFFT) of the road Power Spectral Density (PSD), was put forward. Following the modeling principle, algorithm realization and application to the single track of the road, a time domain model of the bilateral correlative tracks of a road was constructed through a virtual linear system combining the bilateral tracks corresponding to the known coherence function. The model includes the information of both the auto-PSD and the cross-PSD. A simulation example demonstrates the efficient and accurate features of this method. In addition, the approach can be used to simulate the road with any PSD formula and to simulate any stochastic process similar to the road.