Material characterization and axial crushing tests of single and double-walled columns at intermediate strain rates / Leonardo Gunawan … [et al.]

Leonardo Gunawan (2013) Material characterization and axial crushing tests of single and double-walled columns at intermediate strain rates / Leonardo Gunawan … [et al.]. Journal of Mechanical Engineering (JMechE), 10 (2). pp. 19-36. ISSN 1823-5514 ; 2550-164X

Abstract

This paper presents results of dynamic tensile tests of the St37 mild steel and dynamic axial impact tests of columns made of the same material. Both tests were performed in conjunction with the validation of numerical simulations of dynamic crushing of single and double-walled square columns. The tensile tests, which were performed at several strain-rates ranging from 0.001s1 to 100s1, provided the plastic flow stress data of the St37 mild steel that increases as the strain-rate increases. The dynamic axial crushing tests were conducted to single and double-walled square columns made of the St 3 7 mild steel. The test results indicate that the double-walled column has higher mean crushing force and larger energy absorbing capability than those of single-walled columns. Finite element simulations of the dynamic impact tests employing the flow stress data obtained from the tensile tests are in good agreements with those from the experiments. It is noted that the use of the strain-rate dependent material model of the St37 material improved the accuracy of the numerical simulations.

Metadata

Item Type: Article
Creators:
Creators
Email / ID Num.
Leonardo Gunawan
UNSPECIFIED
Divisions: Universiti Teknologi MARA, Shah Alam > Faculty of Mechanical Engineering
Journal or Publication Title: Journal of Mechanical Engineering (JMechE)
UiTM Journal Collections: UiTM Journal > Journal of Mechanical Engineering (JMechE)
ISSN: 1823-5514 ; 2550-164X
Volume: 10
Number: 2
Page Range: pp. 19-36
Keywords: Dynamic tensile test, strain-rate dependent material properties, dynamic axial crushing, single-walled column, double-walled column.
Date: 2013
URI: https://ir.uitm.edu.my/id/eprint/17577
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