The Basic Laws of Mechanics
The laws we need to build models for phase change problems are the principle of virtual power to get the equations of motion and the laws of thermodynamics to deal with thermal actions. For the sake of simplicity, we assume the small perturbation assumption (see Appendix B) after deriving the equations of motion. Within this assumption, the mass balance which describes the density evolution has not a major role, except for phase change with voids (Sect. 4.5), phase change with different densities (Sect. 4.6).
KeywordsDiscontinuity Surface State Quantity Internal Constraint Virtual Power Entropy Balance
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