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RESEARCH ON THERMAL SCIENCE DESCRIBED BY SCIENTISTS AT YEREVAN STATE UNIVERSITY
Science Letter
February 3, 2009
According to recent research published in the Journal of Thermal
Stresses, "The modeling and study of the instability behavior of a
magnetically active ferromagnetic cylindrical shell exposed to thermal
and magnetic fields with a constant electric current is considered
in this paper. It is assumed that the internal surface area of the
shell is covered by the thin conductive cylindrical strip."
"The thickness of this metallic strip is small as compared to the
total thickness of the shell and therefore its contribution to the
elastic properties of the overall cylindrical shell can be considered
negligible. The thermal and magnetic fields of the undisturbed state
of the shell are determined assuming that the edges of the shell are
thermo-isolated. Undisturbed state coincides with the equilibrium which
was generated under the action of thermal field (in equilibrium the
forces of magnetic origin are equal to zero). It is also assumed that
the thermal exchanges shell-to-strip and shell-to-external media follow
Newton-Rickman's law. Using the theory of thermo-magneto-elasticity of
undisturbed state in conjunction with the predetermined thermal and
magnetic fields the stresses of the undisturbed state are determined
under the assumption that the deflection along the generators of the
shell equals to zero. The solutions of the homogeneous boundary value
problems are carried out and the buckling analysis of the shell is
investigated," wrote G. Baghdasaryan and colleagues, Yerevan State
University (see also Thermal Science).
The researchers concluded: "In particular, a close-form solution for
the critical value of electric current for which the shell becomes
statically unstable is presented."
Baghdasaryan and colleagues published their study in the Journal of
Thermal Stresses (Thermomagnetoelastic Stability of Ferromagnetic
Cylindrical Shell Carrying Constant Electric Current. Journal of
Thermal Stresses, 2009;32(1-2):135-148).
For additional information, contact M. Mikilyan, Yerevan State
University, Dept. of Math Methods & Modeling, Faculty Applied Math,
Yerevan, Armenia.
The publisher's contact information for the Journal of Thermal Stresses
is: Taylor & Francis Inc., 325 Chestnut St., Suite 800, Philadelphia,
PA 19106, USA.
Science Letter
February 3, 2009
According to recent research published in the Journal of Thermal
Stresses, "The modeling and study of the instability behavior of a
magnetically active ferromagnetic cylindrical shell exposed to thermal
and magnetic fields with a constant electric current is considered
in this paper. It is assumed that the internal surface area of the
shell is covered by the thin conductive cylindrical strip."
"The thickness of this metallic strip is small as compared to the
total thickness of the shell and therefore its contribution to the
elastic properties of the overall cylindrical shell can be considered
negligible. The thermal and magnetic fields of the undisturbed state
of the shell are determined assuming that the edges of the shell are
thermo-isolated. Undisturbed state coincides with the equilibrium which
was generated under the action of thermal field (in equilibrium the
forces of magnetic origin are equal to zero). It is also assumed that
the thermal exchanges shell-to-strip and shell-to-external media follow
Newton-Rickman's law. Using the theory of thermo-magneto-elasticity of
undisturbed state in conjunction with the predetermined thermal and
magnetic fields the stresses of the undisturbed state are determined
under the assumption that the deflection along the generators of the
shell equals to zero. The solutions of the homogeneous boundary value
problems are carried out and the buckling analysis of the shell is
investigated," wrote G. Baghdasaryan and colleagues, Yerevan State
University (see also Thermal Science).
The researchers concluded: "In particular, a close-form solution for
the critical value of electric current for which the shell becomes
statically unstable is presented."
Baghdasaryan and colleagues published their study in the Journal of
Thermal Stresses (Thermomagnetoelastic Stability of Ferromagnetic
Cylindrical Shell Carrying Constant Electric Current. Journal of
Thermal Stresses, 2009;32(1-2):135-148).
For additional information, contact M. Mikilyan, Yerevan State
University, Dept. of Math Methods & Modeling, Faculty Applied Math,
Yerevan, Armenia.
The publisher's contact information for the Journal of Thermal Stresses
is: Taylor & Francis Inc., 325 Chestnut St., Suite 800, Philadelphia,
PA 19106, USA.