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

Gunawan, Leonardo and Sitompul, Ichsan Setya and Dirgantara, Tatacipta and Putra, Ichsan Setya and Hoon, Huh (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, 10 (2). pp. 19-36. ISSN 1823-5514

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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.

Item Type: Article
Uncontrolled Keywords: Dynamic tensile test, strain-rate dependent material properties, dynamic axial crushing, single-walled column, double-walled column.
Subjects: Q Science > QC Physics > Descriptive and experimental mechanics
T Technology > TA Engineering. Civil engineering > Materials of engineering and construction
Divisions: Faculty of Mechanical Engineering
Depositing User: Staf Pendigitalan 5
Date Deposited: 02 Aug 2017 04:05
Last Modified: 02 Aug 2017 04:05
URI: http://ir.uitm.edu.my/id/eprint/17577

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