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Impact Absorbed Energy of Hat Square Column in High Strength Steels
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English
Abstract
In order to improve the capability of frontal or rear automotive members to absorb impact energy, a basic study was performed to evaluate the effect of strength, micro-structure, and plate thickness on dynamic deformation phenomena using tensile specimens and hat square columns.
Tensile strengths of the materials were selected from 340 to 1180 MPa class steels. Five kinds of micro-structure, Ferrite, Ferrite + Bainite, Ferrite + Martensite, Ferrite + Pearlite, Ferrite + Bainite + γ, and Martensite, were investigated. Tensile tests were carried out under strain rates from 10-1 to 103 /sec. and crash tests of hat square columns were conducted under test speeds from 0.1 to 14.0 m/sec.
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Yoshitake, A., Sato, K., and Okita, T., "Impact Absorbed Energy of Hat Square Column in High Strength Steels," SAE Technical Paper 960020, 1996, https://doi.org/10.4271/960020.Also In
New Steel Products and Processing for Automotive Applications
Number: SP-1172; Published: 1996-02-01
Number: SP-1172; Published: 1996-02-01
References
- Mahmood H.F. Paluszny A. “Design of Thin Walled Columns for Crash Energy Management - Their Strength and Mode of Collapse” SAE 811302
- Aya N. Takahashi K. “ Energy Absorbing Characteristics of Body Structures (Part 1) Trans. of the Society of Automotive Engineers of Japan 7 1974
- Magain Pascal Lescart Jean-Christophe “An Original Equipment to Measure the Energy Absorbed by a Material at High Impact Speed” SAE 950378
- Abe K. Kojima S. “Dynamic Energy Absorbing Characteristics of High - strength Steel Members” Subaru Tech. 14