| Effect of boundary conditions and convection on thermally induced motion of beams subjected to internal heating |
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| 作者姓名： | MALIK Pravin KADOLI Ravikiran GANESAN N. |
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| 作者单位： | Department of Mechanical Engineering National Institute of Technology Karnataka Surathkal Srinivasnagar 575025 India，Department of Mechanical Engineering National Institute of Technology Karnataka Surathkal Srinivasnagar 575025 India，Department of Mechanical Engineering Indian Institute of Technology Madras Chennai 600036 India |
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| 摘 要： | Numerical exercises are presented on the thermally induced motion of internally heated beams under various heat transfer and structural boundary conditions. The dynamic displacement and dynamic thermal moment of the beam are analyzed taking into consideration that the temperature gradient is independent as well as dependent on the beam displacement. The effect of length to thickness ratio of the beam on the thermally induced vibration is also investigated. The type of boundary conditions has its influence on the magnitude of dynamic displacement and dynamic thermal moment. A sustained thermally induced motion is observed with progress of time when the temperature gradient being evaluated is dependent on the forced convection generated due to beam motion. A finite element method (FEM) is used to solve the structural equation of motion as well as the heat transfer equation.
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| 关 键 词： | 热变形 建筑材料 内部加热 实体结构 |
| 收稿时间： | 24 October 2006 |
| 修稿时间： | 2006-10-242007-05-09 |
Effect of boundary conditions and convection on thermally induced motion of beams subjected to internal heating |
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| MALIK Pravin KADOLI Ravikiran GANESAN N..Effect of boundary conditions and convection on thermally induced motion of beams subjected to internal heating[J].Journal of Zhejiang University Science,2007,8(7):1044-1052. |
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| Authors: | Malik Pravin Kadoli Ravikiran Ganesan N |
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| Institution: | (1) Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, Srinivasnagar, 575025, India;(2) Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, 600036, India |
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| Abstract: | Numerical exercises are presented on the thermally induced motion of internally heated beams under various heat transfer and structural boundary conditions. The dynamic displacement and dynamic thermal moment of the beam are analyzed taking into consideration that the temperature gradient is independent as well as dependent on the beam displacement. The effect of length to thickness ratio of the beam on the thermally induced vibration is also investigated. The type of boundary conditions has its influence on the magnitude of dynamic displacement and dynamic thermal moment. A sustained thermally induced motion is observed with progress of time when the temperature gradient being evaluated is dependent on the forced convection generated due to beam motion. A finite element method (FEM) is used to solve the structural equation of motion as well as the heat transfer equation. |
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| Keywords: | Thermal induced oscillations Natural convection Forced convection Finite element analysis |
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