Ultrasonic line source and its coupling with the tool induced heat generation and material flow in friction stir welding
To understand the synchronous interaction mechanism between the ultrasonic vibration exerted on the tool and the tool induced thermo-mechanical behavior in ultrasonic vibration-assisted friction stir welding (UVaFSW) process, the geometric shape of the contact surface between the horn and the tool w...
Main Authors: | , , |
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Format: | Article |
Language: | English |
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Elsevier
2022-11-01
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Series: | Journal of Materials Research and Technology |
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Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422014594 |
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author | Guanlan Zhang ChuanSong Wu Jinqiang Gao |
author_facet | Guanlan Zhang ChuanSong Wu Jinqiang Gao |
author_sort | Guanlan Zhang |
collection | DOAJ |
description | To understand the synchronous interaction mechanism between the ultrasonic vibration exerted on the tool and the tool induced thermo-mechanical behavior in ultrasonic vibration-assisted friction stir welding (UVaFSW) process, the geometric shape of the contact surface between the horn and the tool was considered, and a previous point source of ultrasound was replaced by a line source which is more in line with the actual situation. With the established ultrasonic field model based on a line source of sound, the friction coefficient on the tool/workpiece interface was modified by considering the ultrasonic action from different directions. Combined with the computational fluid dynamics model, the UVaFSW process was numerically simulated. It was found that the line source of ultrasonic energy improved the computation accuracy of ultrasound pressure distribution, and ultrasonic antifriction effect greatly reduced the interfacial friction coefficient near the pin. The exerted ultrasonic vibration led to a slight overall decrease in total amount of heat generation in UVaFSW due to the dual effects of acoustic softening and ultrasonic antifriction. The model was validated by comparing the calculated thermal cycles and the thermo-mechanically affected zone with the experimental measurements. |
first_indexed | 2024-04-11T12:50:08Z |
format | Article |
id | doaj.art-cce8e8576af44544b16bc296a6345861 |
institution | Directory Open Access Journal |
issn | 2238-7854 |
language | English |
last_indexed | 2024-04-11T12:50:08Z |
publishDate | 2022-11-01 |
publisher | Elsevier |
record_format | Article |
series | Journal of Materials Research and Technology |
spelling | doaj.art-cce8e8576af44544b16bc296a63458612022-12-22T04:23:14ZengElsevierJournal of Materials Research and Technology2238-78542022-11-0121502518Ultrasonic line source and its coupling with the tool induced heat generation and material flow in friction stir weldingGuanlan Zhang0ChuanSong Wu1Jinqiang Gao2MOE Key Lab for Liquid-Solid Structure Evolution and Materials Processing, Institute of Materials Joining, Shandong University, Jinan 250061, ChinaCorresponding author.; MOE Key Lab for Liquid-Solid Structure Evolution and Materials Processing, Institute of Materials Joining, Shandong University, Jinan 250061, ChinaMOE Key Lab for Liquid-Solid Structure Evolution and Materials Processing, Institute of Materials Joining, Shandong University, Jinan 250061, ChinaTo understand the synchronous interaction mechanism between the ultrasonic vibration exerted on the tool and the tool induced thermo-mechanical behavior in ultrasonic vibration-assisted friction stir welding (UVaFSW) process, the geometric shape of the contact surface between the horn and the tool was considered, and a previous point source of ultrasound was replaced by a line source which is more in line with the actual situation. With the established ultrasonic field model based on a line source of sound, the friction coefficient on the tool/workpiece interface was modified by considering the ultrasonic action from different directions. Combined with the computational fluid dynamics model, the UVaFSW process was numerically simulated. It was found that the line source of ultrasonic energy improved the computation accuracy of ultrasound pressure distribution, and ultrasonic antifriction effect greatly reduced the interfacial friction coefficient near the pin. The exerted ultrasonic vibration led to a slight overall decrease in total amount of heat generation in UVaFSW due to the dual effects of acoustic softening and ultrasonic antifriction. The model was validated by comparing the calculated thermal cycles and the thermo-mechanically affected zone with the experimental measurements.http://www.sciencedirect.com/science/article/pii/S2238785422014594Friction stir weldingUltrasonic vibrationUltrasonic line sourceHeat generationMaterial flowUltrasonic antifriction |
spellingShingle | Guanlan Zhang ChuanSong Wu Jinqiang Gao Ultrasonic line source and its coupling with the tool induced heat generation and material flow in friction stir welding Journal of Materials Research and Technology Friction stir welding Ultrasonic vibration Ultrasonic line source Heat generation Material flow Ultrasonic antifriction |
title | Ultrasonic line source and its coupling with the tool induced heat generation and material flow in friction stir welding |
title_full | Ultrasonic line source and its coupling with the tool induced heat generation and material flow in friction stir welding |
title_fullStr | Ultrasonic line source and its coupling with the tool induced heat generation and material flow in friction stir welding |
title_full_unstemmed | Ultrasonic line source and its coupling with the tool induced heat generation and material flow in friction stir welding |
title_short | Ultrasonic line source and its coupling with the tool induced heat generation and material flow in friction stir welding |
title_sort | ultrasonic line source and its coupling with the tool induced heat generation and material flow in friction stir welding |
topic | Friction stir welding Ultrasonic vibration Ultrasonic line source Heat generation Material flow Ultrasonic antifriction |
url | http://www.sciencedirect.com/science/article/pii/S2238785422014594 |
work_keys_str_mv | AT guanlanzhang ultrasoniclinesourceanditscouplingwiththetoolinducedheatgenerationandmaterialflowinfrictionstirwelding AT chuansongwu ultrasoniclinesourceanditscouplingwiththetoolinducedheatgenerationandmaterialflowinfrictionstirwelding AT jinqianggao ultrasoniclinesourceanditscouplingwiththetoolinducedheatgenerationandmaterialflowinfrictionstirwelding |