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Issues on Viscoplastic Characterization of Lead-Free Solder for Drop Test Simulations
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).
2011 (English)In: Journal of Electronic Packaging, ISSN 1043-7398, Vol. 133, no 4, 041013- p.Article in journal (Refereed) Published
Abstract [en]

Reliable drop test simulations of electronic packages require reliable material characterization of solder joints. Mechanical properties of lead-free solder were here experimentally investigated for both monotonic and cyclic loading at different strain rates. With regards to the observed complex material behavior, the nonlinear mixed hardening Armstrong and Frederick model combined with the Perzyna viscoplastic law was chosen to fit the experimental data. This model was subsequently implemented into a commercial finite element code and used to simulate drop tests. Actual drop test experiments were conducted in parallel and experimental results were compared to simulations. Prediction discrepancies were analyzed and explanations suggested.

Place, publisher, year, edition, pages
2011. Vol. 133, no 4, 041013- p.
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-83803DOI: 10.1115/1.4005451ISI: 000298537000013ScopusID: 2-s2.0-84555187359OAI: diva2:500659
QC 20120213Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2012-02-13Bibliographically approved

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Bonnaud, Etienne L.
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