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):

Report Date:

1971-05-01

Pagination or Media Count:

198.0

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

Subject Categories:

  • Surface Transportation and Equipment
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE