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Imanparast, Mohammad. (1403). Elastic-Plastic Stress Behaviour of FGM Cylinders under Thermal and Rotational Loads: Role of Material Gradation, Temperature and Rotational Speed in Plastic Zone Propagation. نشریه علمی دانشگاه سیستان و بلوچستان, 3(2), 81-100. doi: 10.22111/cpd.2025.51529.1052
Mohammad Imanparast. "Elastic-Plastic Stress Behaviour of FGM Cylinders under Thermal and Rotational Loads: Role of Material Gradation, Temperature and Rotational Speed in Plastic Zone Propagation". نشریه علمی دانشگاه سیستان و بلوچستان, 3, 2, 1403, 81-100. doi: 10.22111/cpd.2025.51529.1052
Imanparast, Mohammad. (1403). 'Elastic-Plastic Stress Behaviour of FGM Cylinders under Thermal and Rotational Loads: Role of Material Gradation, Temperature and Rotational Speed in Plastic Zone Propagation', نشریه علمی دانشگاه سیستان و بلوچستان, 3(2), pp. 81-100. doi: 10.22111/cpd.2025.51529.1052
Imanparast, Mohammad. Elastic-Plastic Stress Behaviour of FGM Cylinders under Thermal and Rotational Loads: Role of Material Gradation, Temperature and Rotational Speed in Plastic Zone Propagation. نشریه علمی دانشگاه سیستان و بلوچستان, 1403; 3(2): 81-100. doi: 10.22111/cpd.2025.51529.1052

Elastic-Plastic Stress Behaviour of FGM Cylinders under Thermal and Rotational Loads: Role of Material Gradation, Temperature and Rotational Speed in Plastic Zone Propagation

Chemical Process Design
مقاله 6، دوره 3، شماره 2، اسفند 2024، صفحه 81-100    اصل مقاله (1.13 M)
نوع مقاله: Research Article
شناسه دیجیتال (DOI): 10.22111/cpd.2025.51529.1052
نویسنده
Mohammad Imanparast*
Department of Mechanical Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran
چکیده
The primary objective of this study is to analyze the impacts of thermal loading, material composition, radius ratios, and rotational speeds on the initiation and progression of plastic zones in functionally graded cylinders. To achieve this, the problem approached under plane strain conditions, employing Tresca’s yield criterion alongside its associated flow rule to determine the onset of yielding. Two plastic regimes dependent on stress variations with temperature incorporated into the analysis. A power-law distribution applied to model the radial variations in Young’s modulus, yield stress, thermal conductivity, thermal expansion coefficient, and material density. The governing equations solved analytically across three deformation zones: elastic, elastic-plastic, and fully plastic. The resulting formulations predict the conditions for yielding initiation, considering rotational speed, temperature, material properties, and radius ratio. Numerical simulations, conducted using MATLAB, validate the analytical solutions and highlight the significant influence of thermal gradients, rotational speeds, and material characteristics on yielding behaviors. The findings suggest that altering the thermal gradient, even under constant rotational speeds and material configurations; can dramatically change the location of yielding, the governing deformation regime, and the critical rotational speed necessary for plastic deformation.
کلیدواژه‌ها
Elastic-plastic؛ Functionally graded materials؛ Rotating cylinder؛ Thermal loading, MATLAB
مراجع
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