thermomechanical coupling

A statement of the coupled thermomechanical problem on forced resonant vibrations and dissipative heating of hinged viscoelastic elastomeric rectangular plate is given with account of prestresses applied.  The statement is based on the standard Kirchhoff-Love hypotheses and concept of complex characteristics that are used to describe the viscoelastic material response to harmonic loading.  Both steady-state and transient thermal response is investigated.  Influence of the prestress is studied in details for both uniaxial and biaxial preliminary stresses applied.  Dissipative heating tempera

Within the framework of the dynamic statement of the coupled thermomechanics problem accounting for the microstructural phase transformations invoked by the heating and subsequent cooling of the material, the stress-strains state of the steel disk caused by the thermal pulse is investigated. The axisymmetric problem is solved numerically with application of FEM. Material response is simulated with the use of the thermodynamically consistent theory for inelastic behavior of the material with account of thermal dependencies of physical and mechanical properties.

Thermomechanical behavior of inhomogeneous viscoplastic structures under cyclic loading is investigated for the problem of harmonic bending and dissipative heating of a three layer beam. Two problem statements are used. One is based on the generalized thermomechanically consistent flow theory (complete problem statement) and the other one is the approximate scleronomic model implementation (approximate problem statement). Aluminium alloy and steel are chosen as the materials of layers. Comparison of the results obtained for complete and approximate problem statements is performed.