Volume 23 article 1249 pages: 15-36

Published: Mar 15, 2025

DOI: 10.5937/jaes0-46531

COMPARISON OF GAUSSIAN HEAT FLOW OF FSW RELYing ON VON MISES CRITERION AND CONSTITUTIVE MODELS OF YIELD STRENGTH

Ghassan Shaker Abdul Ridha 1
Ghassan Shaker Abdul Ridha
Affiliations
Middle Technical University, Technical Institute Kut, Department of Electrical Techniques, Baghdad, Iraq
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∙ Mohammed Abdulridha Abbas * 2 , 3
Mohammed Abdulridha Abbas
Affiliations
Technical University (ATU), Engineering Technical College-Najaf, Aeronautical Techniques Engineering Department, Najaf, Iraq
University Tun Hussein Onn Malaysia (UTHM Sustainable Manufacturing and Recycling Technology), Advanced Manufacturing and Materials Center (SMART-AMMC), Parit Raja, Malaysia
Correspondence
Mohammed Abdulridha Abbas
mohd.a.abbas@atu.edu.iq
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∙ Ramin Hashemi 4
Ramin Hashemi
Affiliations
Iran University of Science and Technology, School of Mechanical Engineering, Tehran, Iran
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∙ Mohd Amri Lajis 5
Mohd Amri Lajis
Affiliations
Al-Furat Al-Awsat Technical University (ATU), Engineering Technical College-Najaf, Power Mechanics Techniques Engineering Department, Najaf, Iraq
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∙ Muhannad Ahmed 5
Muhannad Ahmed
Affiliations
Al-Furat Al-Awsat Technical University (ATU), Engineering Technical College-Najaf, Power Mechanics Techniques Engineering Department, Najaf, Iraq
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Abstract

In the Friction Stir Welding (FSW) operation, the role of thermal applied load modeling is no secret to simulate the heat distribution issued from this process. Unfortunately, the previous models implemented in transient mode did not present an accurate model for the moving heat source resulting from FSW operation. The main reason for this issue is attributed to the confidence and deviation ratios, especially with the Gaussian Distribution (GD). Besides, these models did not utilize the constitutive models of yield strength for comparison. Accordingly, the current study aims to present hybrid thermal models adopting 99.75% and 0.25% for confidence and deviation ratios, respectively, where it hybridized the Von Mises criterion with the constitutive models for yield strength to Voce, Hollomon, and Swift. Hence, these models contribute to presenting a comparison study to predict numerically the thermal history and investigate this history experimentally. Therefore, these hybrid models were used with finite element simulation to validate the experimental thermal history of FSW for Al 6061-T6 under 800 rpm, 10 mm/min, and 15 kN for rotational speed, linear velocity, and applied force sequentially. Finally, this validation has proved the dominance of the hybrid model for Von Mises-Voce in predicting the thermal history and peak temperature compared to other hybrid models.

Keywords

FSW thermal history constitutive models von mises strain hardening

Acknowledgements

The authors would like to express their profound gratitude and deepest appreciation to the Ministry of Higher Education and Scientific Research, Iraq. Furthermore, the authors would like to express their special thanks to Sustainable Manufacturing and Recycling Technology-Advanced Manufacturing and Materials Centre (SMART-AMMC), Universiti Tun Hussein Onn Malaysia (UTHM), Malaysia, besides Kut Technical Institute-Middle Technical University, and Engineering Technical College-Najaf/Al-Furat Al-Awsat Technical University (ATU).

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