Partial strengthening method for cold stamped B-pillar with minimal shape change

Kwangyoon Kim; Youngnam Song; Wooho Yang; Hyuncheol Choi; Sung Hyuk Park; Jonghun Yoon

doi:10.1007/s00170-019-03516-5

Partial strengthening method for cold stamped B-pillar with minimal shape change

Kwangyoon Kim, Youngnam Song, Wooho Yang, Hyuncheol Choi, Sung Hyuk Park, Jonghun Yoon

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

7 Scopus citations

Abstract

The partial strengthening method for pre-stamped panels both avoids excessive strength enhancement over the entire product and substantially reduces the processing cost compared to conventional hot press forming. In this paper, we propose two types of partial strengthening processes to selectively increase the local strength of a cold stamped B-pillar by utilizing an induction coil system and water spray quenching to induce the martensitic transformation in the target region. Thermo-mechanical FE analyses were conducted to evaluate the effect of the process parameters such as the quenching rate, quenching time, and heating width on the shape changes during the partial strengthening processes while simultaneously considering the thermal dilatation and transformation plasticity.

Original language	English
Journal	International Journal of Advanced Manufacturing Technology
DOIs	https://doi.org/10.1007/s00170-019-03516-5
State	Accepted/In press - 2019

Keywords

B-pillar
Hot press forming
Partial strengthening
Transformation plasticity

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10.1007/s00170-019-03516-5

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title = "Partial strengthening method for cold stamped B-pillar with minimal shape change",

abstract = "The partial strengthening method for pre-stamped panels both avoids excessive strength enhancement over the entire product and substantially reduces the processing cost compared to conventional hot press forming. In this paper, we propose two types of partial strengthening processes to selectively increase the local strength of a cold stamped B-pillar by utilizing an induction coil system and water spray quenching to induce the martensitic transformation in the target region. Thermo-mechanical FE analyses were conducted to evaluate the effect of the process parameters such as the quenching rate, quenching time, and heating width on the shape changes during the partial strengthening processes while simultaneously considering the thermal dilatation and transformation plasticity.",

keywords = "B-pillar, Hot press forming, Partial strengthening, Transformation plasticity",

author = "Kwangyoon Kim and Youngnam Song and Wooho Yang and Hyuncheol Choi and Park, {Sung Hyuk} and Jonghun Yoon",

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year = "2019",

doi = "10.1007/s00170-019-03516-5",

language = "English",

journal = "International Journal of Advanced Manufacturing Technology",

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T1 - Partial strengthening method for cold stamped B-pillar with minimal shape change

AU - Kim, Kwangyoon

AU - Song, Youngnam

AU - Yang, Wooho

AU - Choi, Hyuncheol

AU - Park, Sung Hyuk

AU - Yoon, Jonghun

PY - 2019

Y1 - 2019

N2 - The partial strengthening method for pre-stamped panels both avoids excessive strength enhancement over the entire product and substantially reduces the processing cost compared to conventional hot press forming. In this paper, we propose two types of partial strengthening processes to selectively increase the local strength of a cold stamped B-pillar by utilizing an induction coil system and water spray quenching to induce the martensitic transformation in the target region. Thermo-mechanical FE analyses were conducted to evaluate the effect of the process parameters such as the quenching rate, quenching time, and heating width on the shape changes during the partial strengthening processes while simultaneously considering the thermal dilatation and transformation plasticity.

AB - The partial strengthening method for pre-stamped panels both avoids excessive strength enhancement over the entire product and substantially reduces the processing cost compared to conventional hot press forming. In this paper, we propose two types of partial strengthening processes to selectively increase the local strength of a cold stamped B-pillar by utilizing an induction coil system and water spray quenching to induce the martensitic transformation in the target region. Thermo-mechanical FE analyses were conducted to evaluate the effect of the process parameters such as the quenching rate, quenching time, and heating width on the shape changes during the partial strengthening processes while simultaneously considering the thermal dilatation and transformation plasticity.

KW - B-pillar

KW - Hot press forming

KW - Partial strengthening

KW - Transformation plasticity

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U2 - 10.1007/s00170-019-03516-5

DO - 10.1007/s00170-019-03516-5

M3 - Article

AN - SCOPUS:85062799669

SN - 0268-3768

JO - International Journal of Advanced Manufacturing Technology

JF - International Journal of Advanced Manufacturing Technology

ER -

Partial strengthening method for cold stamped B-pillar with minimal shape change

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Keywords

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