A Theoretical Analysis and an Analogue Test of Two-Dimensional Thermal Stress : The Case When the Temperature of Boundaries for a Rectangular Cross Sectional Solid is Suddenly Changed
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Though there are many papers about thermal stress, it is generally fairly difficult to solve two-dimensional thermal stress problems exactly by means of theoretical analysis except in some special cases. So most of interesting problems from an engineering view point are frequently treated by approximate calculations such as the finite-difference methods, or by experimental approaches as photoelasticity method. Under these circumstances, we performed an analogue test of two dimensional thermal stress taking place in a rectangular block where boundary temperature is suddenly changed, using characteristics of laminar viscous flow and pressure expansion. On the other hand, we analyzed theoretically the thermal stress described above and compared the numerical calculations with the experimental results. By calculation and experiment, the general tendency in such a thermal stress can be made clear and this physical analogue technique is also applicable for two-dimensional problems.
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