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Crash Performance of Strength Gradient Tube Induced by Selective Laser Patterningopen access
- Issue Date
- Oct-2022
- Publisher
- MDPI Open Access Publishing
- Keywords
- local hardening; laser; strain rate sensitivity; FEM analysis; auxetic; helical; laser patterning
- Citation
- Materials, v.15, no.19, pp 1 - 20
- Pages
- 20
- Indexed
- SCIE
SCOPUS
- Journal Title
- Materials
- Volume
- 15
- Number
- 19
- Start Page
- 1
- End Page
- 20
- ISSN
- 1996-1944
- Abstract
- This paper presents an investigation of the performance of a 22 MnB5 tube after local heat treatment according to a patterning shape under dynamic crash test conditions to propose the patterning shape with the best energy absorption efficiency. Numerical simulations support experimental results to validate the deformation mode during dynamic crash test as well as the strain distribution of the specimen. The helical patterning not only demonstrates the highest axial loading force and energy absorbance in both static and dynamic crash tests, but also can be easily fabricated in a short time. The helical pattern can optimize different pitch sizes according to the thickness and diameter of the cylindrical tube, and it has the highest energy absorption rate with 83.0% in dynamic conditions.
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Related Researcher
- Hong, Suk Joon
- ERICA 공학대학 (DEPARTMENT OF MECHANICAL ENGINEERING)