Accession Number : AD0724704

Title :   Ride Response of a Model Vehicle to Harmonic Inputs.

Descriptive Note : Final rept.,

Corporate Author : STEVENS INST OF TECH HOBOKEN N J DAVIDSON LAB

Personal Author(s) : McClellan,David Mayo

Report Date : MAY 1971

Pagination or Media Count : 198

Abstract : The document is concerned with vehicle response to harmonic inputs. The theories of mechanical vibrations and linear systems analysis are applied to one, two, and n-dimensional lumped-parameter systems to develop an orientation to the methods of obtaining theoretical system responses. Emphasis is placed on the system transfer function, the frequency and characteristic polynomials, and the steady-state response. Subsequently, the theoretical heave and pitch responses of the sprung mass of a vehicle traveling over a harmonic wave are obtained. The vehicle is represented as a four-dimensional lumped-parameter system and is subjected to a harmonic wave input of sufficient wavelength to allow continuous tire patch contact, but short enought to induce pitch motion. A one-eight scale model of some general vehicle is tested to determine its mass, inertia, damping, and spring parameters. The model is then run on a harmonic track (no roll motion imparted), its heave and pitch accelerations of the sprung mass center of gravity measured, and a correlation made with the theoretical results. (Author)

Descriptors :   (*VEHICLES, MECHANICAL PROPERTIES), (*VIBRATION, RESPONSE), MATHEMATICAL ANALYSIS, LINEAR SYSTEMS, MODEL TESTS, DATA PROCESSING, CORRELATION TECHNIQUES, TEST EQUIPMENT, TEST METHODS, THESES

Subject Categories : Surface Transportation and Equipment
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE