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contributor authorI. Grindeanu
contributor authorK. K. Choi
contributor authorK.-H. Chang
date accessioned2017-05-08T23:57:23Z
date available2017-05-08T23:57:23Z
date copyrightSeptember, 1998
date issued1998
identifier issn1050-0472
identifier otherJMDEDB-27653#491_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/120878
description abstractShape design sensitivity analysis (DSA) and optimization methods for the fatigue life of thermoelastic structural components are presented in this paper. A multiaxial fatigue life prediction method is used for crack initiation. The crack initiation life prediction is modeled using constant amplitude strain-life data and cyclic stress-strain curves. A hybrid DSA method is used for the fatigue life. The design sensitivities of the dynamic stress and the temperature field are obtained using analytical approaches. The design sensitivity is used to predict the dynamic stress and temperature of the perturbed design. Using predicted stress and temperature, the fatigue life of the perturbed structural design component is predicted. The predicted fatigue life is then used to obtain the design sensitivity of the fatigue life by utilizing the finite difference method. The proposed DSA method is applied to design optimization of an automotive exhaust manifold of an automotive vehicle, considering crack initiation lives as design constraints.
publisherThe American Society of Mechanical Engineers (ASME)
titleShape Design Optimization of Thermoelastic Structures for Durability
typeJournal Paper
journal volume120
journal issue3
journal titleJournal of Mechanical Design
identifier doi10.1115/1.2829178
journal fristpage491
journal lastpage500
identifier eissn1528-9001
keywordsDesign
keywordsDurability
keywordsOptimization
keywordsShapes
keywordsFatigue life
keywordsFracture (Materials)
keywordsTemperature
keywordsStress
keywordsStress-strain curves
keywordsStructural design
keywordsAnalytical methods
keywordsDesign sensitivity analysis
keywordsFinite difference methods
keywordsManifolds
keywordsAutomobiles AND Exhaust systems
treeJournal of Mechanical Design:;1998:;volume( 120 ):;issue: 003
contenttypeFulltext


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