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原文传递 HEMTT Dynamic Sensitivity to Small Obstacles at Low Velocities. Volume 2. Validation Study Using VEHDYN 3.0.

题名：	HEMTT Dynamic Sensitivity to Small Obstacles at Low Velocities. Volume 2. Validation Study Using VEHDYN 3.0.
作者：	Creighton, Daniel C.;
关键词：	MOTION, TRUCKS, SUSPENSION DEVICES, VELOCITY, COMPUTERIZED SIMULATION, MANEUVERABILITY, PITCH(MOTION), ACCELERATION, DISPLACEMENT, DAMPING, DROP TESTS, FAST FOURIER TRANSFORMS, SPRINGS.
摘要：	The Vehicle Dynamic Model VEHDYN 3.0, developed at the US Army Engineer Waterways Experiment Station, was used to compare selected displacements, velocities, and accelerations with field-measured quantities for both an empty and a fully loaded M977 HEMTT truck. Test conditions (detailed in Volume 1 of this series) included having the HEMTT negotiate small square-edged obstacles (0.25 -3.00 inches high) at low velocities (1.80 0.06 mph). Time history and Fast Fourier Transform comparisons are provided. The VEHDYN 3.0 model did a reasonable job at predicting the motion, especially the action of the HEMTT walking beam suspensions and overall low-frequency response. A procedure was demonstrated that takes acceleration data from low-amplitude front and rear drop tests and develops linear spring and damper response relationships for the HEMTT. (MM)
总页数：	171
报告类型：	科技报告