Crash Performance of Strength Gradient Tube Induced by Selective Laser Patterning

Hyung Gyu Kim; Nam Hoai Trinh; Jun Beom Kwon; Suk Joon Hong; Sung Hyuk Park; Jong Hun Yoon

doi:10.3390/ma15196580

Crash Performance of Strength Gradient Tube Induced by Selective Laser Patterning

Hyung Gyu Kim, Nam Hoai Trinh, Jun Beom Kwon, Suk Joon Hong, Sung Hyuk Park, Jong Hun Yoon

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	6580
Journal	Materials
Volume	15
Issue number	19
DOIs	https://doi.org/10.3390/ma15196580
State	Published - Oct 2022

Keywords

auxetic
FEM analysis
helical
laser
laser patterning
local hardening
strain rate sensitivity

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title = "Crash Performance of Strength Gradient Tube Induced by Selective Laser Patterning",

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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AU - Trinh, Nam Hoai

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AU - Park, Sung Hyuk

AU - Yoon, Jong Hun

PY - 2022/10

Y1 - 2022/10

N2 - 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.

AB - 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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Crash Performance of Strength Gradient Tube Induced by Selective Laser Patterning

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Keywords

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