Coupled simulation of thermal-metallurgical-mechanical behavior in laser keyhole welding of AH36 steel

A computational fluid dynamics (CFD) simulation of the molten pool in laser keyhole welding was utilized to acquire temperature data for further metallurgical and mechanical calculations. For the CFD simulation, the governing equations were solved, and the scattering and absorption of the laser beam...

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Autores principales:	Sang-Woo Han, Won-Ik Cho, Lin-Jie Zhang, Suck-Joo Na
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Laser keyhole welding Numerical simulation CFD-FEM combined simulation Stochastic ray tracing Phase transformation Vacuum Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/bc373a07d70d401eb5ed35db54f0b9d3
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spelling	oai:doaj.org-article:bc373a07d70d401eb5ed35db54f0b9d32021-11-26T04:24:06ZCoupled simulation of thermal-metallurgical-mechanical behavior in laser keyhole welding of AH36 steel0264-127510.1016/j.matdes.2021.110275https://doaj.org/article/bc373a07d70d401eb5ed35db54f0b9d32021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0264127521008303https://doaj.org/toc/0264-1275A computational fluid dynamics (CFD) simulation of the molten pool in laser keyhole welding was utilized to acquire temperature data for further metallurgical and mechanical calculations. For the CFD simulation, the governing equations were solved, and the scattering and absorption of the laser beam in the plume were modeled at both the standard atmospheric condition (101,325 Pa) and a vacuum condition (3,000 Pa). A stochastic ray-tracing algorithm was adopted to effectively implement the transmission and scattering of laser bundles of rays. The temperature data from the CFD simulation were then imported to a finite element method (FEM)-based heat conduction analysis to simulate the thermal-metallurgical-mechanical behavior during the cooling phase of the weldment. The strain, residual stress, and distortion were calculated using an elastoplastic model based on the phase transformation-dependent material properties. An element deactivation scheme was used to take care of the zero-strength condition of the elements in the molten pool and keyhole region. The Vickers hardness and the residual stress were measured to verify the simulation model, and the experimental and simulation results had a similar tendency.Sang-Woo HanWon-Ik ChoLin-Jie ZhangSuck-Joo NaElsevierarticleLaser keyhole weldingNumerical simulationCFD-FEM combined simulationStochastic ray tracingPhase transformationVacuumMaterials of engineering and construction. Mechanics of materialsTA401-492ENMaterials & Design, Vol 212, Iss , Pp 110275- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Laser keyhole welding Numerical simulation CFD-FEM combined simulation Stochastic ray tracing Phase transformation Vacuum Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Laser keyhole welding Numerical simulation CFD-FEM combined simulation Stochastic ray tracing Phase transformation Vacuum Materials of engineering and construction. Mechanics of materials TA401-492 Sang-Woo Han Won-Ik Cho Lin-Jie Zhang Suck-Joo Na Coupled simulation of thermal-metallurgical-mechanical behavior in laser keyhole welding of AH36 steel
description	A computational fluid dynamics (CFD) simulation of the molten pool in laser keyhole welding was utilized to acquire temperature data for further metallurgical and mechanical calculations. For the CFD simulation, the governing equations were solved, and the scattering and absorption of the laser beam in the plume were modeled at both the standard atmospheric condition (101,325 Pa) and a vacuum condition (3,000 Pa). A stochastic ray-tracing algorithm was adopted to effectively implement the transmission and scattering of laser bundles of rays. The temperature data from the CFD simulation were then imported to a finite element method (FEM)-based heat conduction analysis to simulate the thermal-metallurgical-mechanical behavior during the cooling phase of the weldment. The strain, residual stress, and distortion were calculated using an elastoplastic model based on the phase transformation-dependent material properties. An element deactivation scheme was used to take care of the zero-strength condition of the elements in the molten pool and keyhole region. The Vickers hardness and the residual stress were measured to verify the simulation model, and the experimental and simulation results had a similar tendency.
format	article
author	Sang-Woo Han Won-Ik Cho Lin-Jie Zhang Suck-Joo Na
author_facet	Sang-Woo Han Won-Ik Cho Lin-Jie Zhang Suck-Joo Na
author_sort	Sang-Woo Han
title	Coupled simulation of thermal-metallurgical-mechanical behavior in laser keyhole welding of AH36 steel
title_short	Coupled simulation of thermal-metallurgical-mechanical behavior in laser keyhole welding of AH36 steel
title_full	Coupled simulation of thermal-metallurgical-mechanical behavior in laser keyhole welding of AH36 steel
title_fullStr	Coupled simulation of thermal-metallurgical-mechanical behavior in laser keyhole welding of AH36 steel
title_full_unstemmed	Coupled simulation of thermal-metallurgical-mechanical behavior in laser keyhole welding of AH36 steel
title_sort	coupled simulation of thermal-metallurgical-mechanical behavior in laser keyhole welding of ah36 steel
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/bc373a07d70d401eb5ed35db54f0b9d3
work_keys_str_mv	AT sangwoohan coupledsimulationofthermalmetallurgicalmechanicalbehaviorinlaserkeyholeweldingofah36steel AT wonikcho coupledsimulationofthermalmetallurgicalmechanicalbehaviorinlaserkeyholeweldingofah36steel AT linjiezhang coupledsimulationofthermalmetallurgicalmechanicalbehaviorinlaserkeyholeweldingofah36steel AT suckjoona coupledsimulationofthermalmetallurgicalmechanicalbehaviorinlaserkeyholeweldingofah36steel
_version_	1718409924318330880

Coupled simulation of thermal-metallurgical-mechanical behavior in laser keyhole welding of AH36 steel

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