Explicit dynamics finite element analysis of energy absorption characteristics of thin-walled UltraSTEEL columns

Liang, C, Wang, C J, Nguyen, V B and Mynors, D J (2016) Explicit dynamics finite element analysis of energy absorption characteristics of thin-walled UltraSTEEL columns. In: 24th Conference on Computational Mechanics, 31 Mar - 1 Apr 2016, Cardiff, UK.

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Abstract

UltraSTEEL material has been reported to have higher yield and ultimate strengths than plain mild steel under quasi-static loads. This project aims to study the energy absorption characteristics of UltraSTEEL thin-walled structures when subjected to axial impact loads. The numerical modelling starts from duplicating the UltraSTEEL dimpling process and defining the resultant material properties by taking strain hardening and strain rate sensitivity into consideration. Features including element type, mesh density, symmetric boundary conditions and imperfections are then studied. The responses of 1mm gauge plain and UltraSTEEL columns to the same impact load are compared by conducting explicit dynamics finite element simulations. Comparing to the plain columns, the effect of gauge on the UltraSTEEL columns’ failure mode and specific energy absorption (SEA) are analysed through a parametric study.

Item Type: Conference or Workshop Item (Paper)
Keywords: Explicit dynamics analysis; UltraSTEEL; Axial crushing; Thin-walled Structure
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA0349 Mechanics of engineering. Applied mechanics
Depositing User: Chang Wang
Date Deposited: 15 Jun 2016 06:45
Last Modified: 15 Jun 2016 06:45
URI: http://sro.sussex.ac.uk/id/eprint/61490

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Project NameSussex Project NumberFunderFunder Ref
UnsetG1420Hadley Industries Holdings LimitedUnset