The sign notation of the elastic and electrostrictive terms in the free energy density function of nonlinear polarizable deformable solids is not unique. Four possible, commonly used sign combinations have been analyzed, and their implication on the associated elastic boundary conditions is described.
No takes yet. Share an insight, caveat, or question.
Amin et al. (1989) studied this question.
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: