TORSIONAL STIFFNESS AND FATIGUE STUDY OF SURFACE-MOUNTED COMPLIANT LEADED SYSTEMS

被引：3

作者：

ENGEL, PA ^{[1
]}

MILLER, TM ^{[1
]}

机构：

[1] DRESSER RAND CORP,PAINTED POST,NY 14870

来源：

IEEE TRANSACTIONS ON COMPONENTS HYBRIDS AND MANUFACTURING TECHNOLOGY | 1993年 / 16卷 / 06期

关键词：

D O I：

10.1109/33.241782

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Circuit cards with surface-soldered compliant leaded modules are often subjected to torque tests to ensure their structural integrity. The present work explores the stiffness and fatigue behavior of such structures. A torsional load tester was devised, exerting cyclic mechanical torque at a desired fixed amplitude and frequency. Twisting loads up into the nonlinear load range were applied. Lead forces were computed by structural analysis methods, and these were compared with finite element results. The Engel-Ling coupled plate theory [1] was found to correspond well to finite element results. Fatigue failures occurred in the solder for J-leads and in the leads for gullwings. Fatigue curves resembled the Coffin-Manson law.

引用

页码：577 / 583

页数：7