Induced top Yukawa coupling and suppressed Higgs mass parameters

In the scenarios with heavy top squarks, mass parameters of the Higgs field must be fine-tuned due to a large logarithmic correction to the soft scalar mass. We consider a new possibility that the top Yukawa coupling is small above TeV scale. The large top mass is induced from strong Yukawa interaction of the Higgs with another gauge sector, in which supersymmetry breaking parameters are given to be small. Then it is found that the logarithmic correction to the Higgs soft scalar mass is suppressed in spite of the strong coupling and the fine-tuning is ameliorated. We propose an explicit model coupled to a superconformal gauge theory which realizes the above situation.Comment: RevTeX4 style, 10 pages, 3 figure

A Finite Element Formulation of The Coupled Thermoelastic-Plastic Problems

A finite element formulation for the thermoelastic-plastic material is presented in the incremental form with thermomechanical considerations. Emphasis is focused upon the constitutive relation by using the generalized yield function. The governing equations for finite deformation containing the increments of displacement and temperature as unknowns are deduced for the material

Temperature Dependent Analysis of Elastoplastic Thermal Stresses by Finite Element Method

The finite element formulation was developed for the elastoplastic thermal stress problem by employing a loading function composed of stress, plastic strain and temperature. Then, the technique of utilizing the formulation was discussed. The generalized plastic stress-strain matrix for the strain incremental theory was experssed explicitly in terms of the loading function ; and it was found that the additional nodal force due to the temperature dependence of the loading function should be considered in the matrix equilibrium equation. It was also shown that the transformation stresses during quenching could be analysed by taking account of the dependence of both temperature and cooling velocity on the coefficient of thermal expansion. The formulated analysis was applied to the elastoplastic thermal stress problem of the thick-walled cylinder subjected to an unsteady radial temperature gradient. Good agreement was obtained between the calculated residual stresses and experimental values measured by Sachs' boring-out technique