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Computer Generated Root-Mean-Square (RMS) Roughness Courses for Ride Quality Evaluation
| 题名： | Computer Generated Root-Mean-Square (RMS) Roughness Courses for Ride Quality Evaluation |
| 作者： | Bylsma, wesley B.; |
| 关键词： | POWER SPECTRA, DIGITAL SIMULATION, RIDE QUALITY, SURFACE ROUGHNESS, FREQUENCY DOMAIN, NORMAL DENSITY FUNCTIONS, VIBRATIONAL SPECTRA. |
| 摘要： | This report presents a suite of root mean square (RMS) computer generated ride quality courses in the range of 0.10 to 5.00 inches RMS for use in evaluating vehicle dynamics by computer simulation. Power Spectral Density descriptions of each surface profile were used with digital simulation of stationary random processes to generate distance histories. Theoretical foundations end background on random processes end analysis of them are referenced. For the specific example of surface profiles the mathematical preliminaries demonstrated the particular analytical techniques necessary to simulate random processes and apply it to surface profiles. In our examples the surface profile description was a one sided power spectral density function with defined constant slope frequency domain. With the ability to simulate surface profiles and the -2 (log scale) slope description restriction the constant was determined relating the surface roughness parameter, RMS, to the PSD surface profile description, allowing for the generation of a set of courses to simulate any desired level of surface roughness. |
| 总页数： | 32 |
| 报告类型： | 科技报告 |
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