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Proceedings Paper

Review of current developments in terrain characterization and modeling
Author(s): Heather M. Chemistruck; Zachary R. Detweiler; John B. Ferris; Alexander A. Reid; David J. Gorsich
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Paper Abstract

As computational power builds to meet the needs of ground vehicle designers, the focus has begun to shift from laboratory testing of prototype parts and subsystems to computational simulations of the vehicle. In the automotive and defense industries, large strides have been made in simulating full vehicle responses, such as durability. These simulations are most meaningful when excited by proper mathematical models that accurately characterize the terrain. It is important to understand the roughness indices that are used to judge the terrain profiles. The state-of-the-art in terrain characterization and modeling is reviewed in this work for models including Power Spectral Density (PSD), Markov Chains, Autoregressive Integrated Moving Average (ARIMA), Parametric Road Spectrum (PRS), Shifted Spatial Range Spectrum (SSR), Direct Spectrum Estimation (DSE) and Transformed Direct Spectrum Estimation (TrDSE). The applicability, limitations, and benefits of these models are assessed based on their effectiveness in capturing the stochastic nature of the terrain being characterized. A discussion of terrain characterization usage to advance reliability testing concludes this work as an example of the applicability of this technology.

Paper Details

Date Published: 30 April 2009
PDF: 12 pages
Proc. SPIE 7348, Modeling and Simulation for Military Operations IV, 73480N (30 April 2009); doi: 10.1117/12.818128
Show Author Affiliations
Heather M. Chemistruck, Virginia Polytechnic Institute and State Univ. (United States)
Zachary R. Detweiler, Virginia Polytechnic Institute and State Univ. (United States)
John B. Ferris, Virginia Polytechnic Institute and State Univ. (United States)
Alexander A. Reid, U.S. Army Tank-Automotive Research, Development and Engineering Ctr. (United States)
David J. Gorsich, U.S. Army Tank-Automotive Research, Development and Engineering Ctr. (United States)


Published in SPIE Proceedings Vol. 7348:
Modeling and Simulation for Military Operations IV
Dawn A. Trevisani, Editor(s)

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