Crashworthiness Optimization of Thin Walled Cylindrical Tubes with Annular Grooves under Axial Compression
作者： Reza Emami , Elahe Sadat Alavi Moghadam , Mostafa Sohrabi
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.463-464.30
关键词: Design of experiments 、 Crashworthiness 、 Groove (music) 、 LS-DYNA 、 Structural engineering 、 Engineering 、 Surface (mathematics) 、 Finite element method 、 Point (geometry) 、 Composite number
摘要: In this paper explicit finite element codes of LS DYNA are applied to simulate the crushing behavior cylindrical metallic impact energy absorbers with annular machined grooves and validation simulation results done by comparing experimental theoretical findings from literature. Some efforts made find optimum groove geometry tubes considering two criteria such as maximum absorbed per unit mass (SEA) ratio average load during (CFE). Maximum allowable geometrical limits that should not exceed some specified boundaries considered design constrains. Based on experiment technique (DOE) conditions be taken determined consequently, response surface (RS) models created build a composite objective function considers both CFE SEA. Genetic algorithm is optimal point for meets requirements.
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