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《Automotive Engineering》 2010-09
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A Study on the Lightweighting of Car Body Structure Based on Stiffness and Crashworthiness Requirements

Shi Yi,Zhu Ping,Zhang Yu & Pan FengSchool of Mechanical and Power Engineering,Shanghai Jiao Tong University,Shanghai Key Lab of Digital Autobody Engineering,Shanghai 200240  
By concurrently considering both bending stiffness and side crashworthiness,a study on the lightweight design of a specific car is conducted.For enhancing computing efficiency,support vector regression technique is used to construct metamodels for performance indicators,thus avoiding the defects of huge computation efforts and slow convergence in the optimization of complete vehicle crash.Then by optimization combined with adaptive process,the thickness and material property parameters of auto panels are optimized on the promise of meeting the requirements of both stiffness and side crashworthiness,and hence the lightweighting of car body structure is realized with a 9.1kg reduction in body mass achieved,corresponding to 5.44% of lightweighting effect.
【Fund】: 国家自然科学基金项目(50875164)资助
【CateGory Index】: U463.82
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