Experimental Investigation of Shock Mitigation of Electronic Boards Within Projectiles

Authors

Deepak Sankar Somasundaram, University of Nevada, Las VegasFollow
Mohamed Trabia, University of Nevada, Las VegasFollow
Brendan O'Toole, University of Nevada, Las VegasFollow
Qunli Liu, University of Nevada, Las VegasFollow

Document Type

Conference Proceeding

Publication Date

10-31-2009

Publication Title

ASME 2008 International Mechanical Engineering Congress and Exposition

Publisher

ASME

First page number:

207

Last page number:

214

Abstract

Electronic components inside a projectile are subjected to high acceleration during launch. Failure of these components, affects the performance of the projectile. The objective of the paper is to better understand how shocks are transmitted to electronic boards and to investigate ways to mitigate these shocks. A projectile model is created to mimic an actual projectile. As projectiles are usually composed of threaded components, the effect of the tightening preload torque on accelerations and frequencies of components on boards is discussed. Experimental results show that increasing the tightening preload torque above a specific level can ensure that projectile behaves as a single body, which makes acceleration of a component on the board independent of tightening torque. Effect of mounting the board on polyurethane rubber is also considered. The paper also presents suggestions to simulate experimental test using finite element methods.

Keywords

Electronic apparatus and appliances; Lumber; Projectiles; Shock (Mechanics)

Disciplines

Electrical and Electronics | Engineering Mechanics | Mechanical Engineering

Language

English

Comments

Conference held: Boston, Massachusetts, USA, October 31–November 6, 2008

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Repository Citation

Somasundaram, D. S., Trabia, M., O'Toole, B., Liu, Q. (2009). Experimental Investigation of Shock Mitigation of Electronic Boards Within Projectiles. ASME 2008 International Mechanical Engineering Congress and Exposition 207-214. ASME.