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Improved Finite Element Methodology For Integrated Thermal-Structural Analysis, Pramote Dechaumphai
Improved Finite Element Methodology For Integrated Thermal-Structural Analysis, Pramote Dechaumphai
Mechanical & Aerospace Engineering Theses & Dissertations
An integrated thermal-structural finite element approach for efficient coupling of thermal and structural analysis is presented. New thermal finite elements which yield exact nodal and element temperatures for one-dimensional linear steady-state heat transfer problems are developed. A nodeless variable formulation is used to establish improved thermal finite elements for one-dimensional nonlinear transient and two-dimensional linear transient heat transfer problems. The thermal finite elements provide detailed temperature distributions without using additional element nodes and permit a common discretization with lower order congruent structural finite elements. The accuracy of the integrated approach is evaluated by comparisons with analytical solutions and conventional finite …