Award Date

1-1-2005

Degree Type

Thesis

Degree Name

Master of Science (MS)

Department

Mechanical Engineering

First Committee Member

Douglas Reynolds

Number of Pages

89

Abstract

The UNLV CMEST (The Center for Mechanical & Environment Systems Technology) lab and Army Research Labs have undertaken a research project to develop a seat system that will reduce the level of shock introduced into the bottom of a seat when a vehicle trips a land mine. In order to develop the seat system, a test stand was designed using an air cannon to fire a 5 pound steel slug at an impact plate, creating a high acceleration impulse or shock. The shock from the slug impact is redirected from the horizontal plane to the vertical plane through a pinned rocker assembly designed to strike the bottom of the seat; The test stand was designed with the aid of LS-DYNA, a finite element code capable of modeling the deformations and stresses in dynamic systems. Materials used to construct the test stand were simulated in the model to determine if they are able to withstand the impact from the slug. The LS-DYNA model was used to determine possible acceleration levels output by the test stand in different testing configurations. After completing the construction of the stand, the computer models were verified by comparing the simulated results to experimental testing data. Testing was completed in the CMEST lab using a data collection system and high G accelerometers. (Abstract shortened by UMI.).

Keywords

Development; Seat; Shock; Stand; Test

Controlled Subject

Mechanical engineering

File Format

pdf

File Size

2242.56 KB

Degree Grantor

University of Nevada, Las Vegas

Language

English

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