Transactions of Society of Automotive Engineers of Japan
Online ISSN : 1883-0811
Print ISSN : 0287-8321
ISSN-L : 0287-8321
Technical Paper
Examination of Shape Optimization for the Fatigue Strength of Suspension Parts
Takaaki NagataniHideyuki Azegami
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2009 Volume 40 Issue 2 Pages 265-268

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Abstract
This paper presents an approach to minimize weight of suspension parts while keeping the fatigue strength base on a non-parametric boundary shape optimization theory. As an index for the fatigue failure, we considered the maximum valueof absolute principle stress in a suspension part evaluated from actual loading history. For reshaping, we employed the traction method to keep the smoothness of original boundary.To reduce computational time, we considered a conventional method to select critical loading cases from actual loading history. By our approach, we obtained about 10% weight reduction while keeping the maximum value of absolute principle stress constant.
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© 2009 Society of Automotive Engineers of Japan, Inc.
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