Thermomechanical stress from conditional Lagrange derivative

  • Gyula Béda


A constititive equation taking into account thermodynamical processes can be derived as a conditional Lagrange derivative, which uses the first law of thermodynamics as condition. In case of the resulting constitutive equation the seconlaw of thermodynamics is also satisfied.
Keywords: stress, conditional Lagrange derivative, entropy production
How to Cite
Béda, G. (no date) “Thermomechanical stress from conditional Lagrange derivative”, Periodica Polytechnica Mechanical Engineering, 56(1), pp. 7-8. doi: