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RESEARCH PAPERS

Approximate Structural Analysis of Circuit Card Systems Subjected to Torsion

[+] Author and Article Information
P. A. Engel

Mechanical and Industrial Engineering Department, State University of New York at Binghamton, Binghamton, NY 13902

J. T. Vogelmann

Conax Buffalo Corp., Buffalo, NY 14225

J. Electron. Packag 114(2), 203-210 (Jun 01, 1992) (8 pages) doi:10.1115/1.2906419 History: Received August 01, 1991; Online April 28, 2008

Abstract

Engineering analysis of module-populated printed circuit cards subjected to torsion is pursued by approximate engineering analysis, numerical (finite element), and experimental means. The engineering theory utilizes a simplified method of evaluating the torsional stiffness and maximum lead force, the latter found at the module corners. Finite element methods are used to check these values for circuit cards with a wide variety of module configurations, starting from a single-module to sixteen PLCC modules, having 44, 68, and 84 J-leads. An experimental torsion apparatus is used to obtain data for further comparison with the former approaches, and for getting data from the geometrically nonlinear (large deflection) range.

Copyright © 1992 by The American Society of Mechanical Engineers
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