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Publications in Scientific Journals:

N Hasebe, C. Bucher, R. Heuer:
"Analyses of Thermal Conduction and Stress Induced by Electric Current in an Infinite Thin Plate with an Elliptical Hole";
Journal of Thermal Stresses, 32 (2009), 1065 - 1086.



English abstract:
Uniform electric current at infinity is applied to a thin infinite conductor with an
elliptical hole disturbing the electric current, which gives rise to Joule heat, temperature
increase and heat flux. Joule heat produces uniform and uneven temperature fields
which in turn initiate thermal stress. These electrical current, Joule heat, temperature,
heat flux and thermal stress analyses are carried out and their closed form solutions
are obtained. The heat conduction problem is solved as a temperature boundary value
problem. Figures of distribution of Joule heat, temperature, heat flux and stress are
shown. A dislocation and a rotation terms for thermal stress analysis appear, which
makes problem complex. Solutions of Joule heat, temperature, heat flux and thermal
stress are nonlinear for the direction of electric current. For an infinite plate with a
circular hole, stress components do not occur on the whole plate. As a special case,
a crack problem is analyzed and intensities at the crack tip of each problem are
investigated. Relations between melting temperature and electric current density, and
between fracture toughness value and electric current density are investigated for some
crack lengths for steel.

Created from the Publication Database of the Vienna University of Technology.