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Theses/Dissertations

1995

Mechanical engineering

Applied Mechanics

Articles 1 - 2 of 2

Full-Text Articles in Engineering

A Compliant Model For Estimation And Optimization Of Damping In Vibrating Structures , Thomas Jeffrey Thompson Jan 1995

A Compliant Model For Estimation And Optimization Of Damping In Vibrating Structures , Thomas Jeffrey Thompson

Retrospective Theses and Dissertations

Proposed future space missions involve large structures which must maintain precise dimensional tolerances even during dynamic maneuvers. In order to attenuate disturbances in the many modes of vibration of such a structure, active and passive vibration control are proposed. The passive control is to be achieved by placing viscous or viscoelastic members or materials within a structure in order to absorb energy. Ascertaining the best combination of locations for such treatments is difficult due to the large number of cases, each of which requires computationally expensive complex eigenvalue analyses of a finite element model to compute modal damping values;In ...


An Investigation Of The Mechanics Of Rollover For Cars And Light Trucks , Yvonne Irene Katherine Lund Jan 1995

An Investigation Of The Mechanics Of Rollover For Cars And Light Trucks , Yvonne Irene Katherine Lund

Retrospective Theses and Dissertations

Rollover of cars and light trucks in single vehicle accidents is of great interest to designers in the automotive industry and to regulators in government agencies. This thesis addresses metrics--the static stability factor, the tilt table ratio, the side pull test, and the critical sliding velocity--which are proposed measures of vehicle resistance to rollover;A notable finding is that the critical sliding velocity, CSV, is independent of the vehicle mass and roll moment of inertia and depends only on the track width and center of gravity height. Furthermore, while side pull testing and tilt table testing are mainly dependent on ...