Yves Jannot is a CNRS research engineer at the Energy, Theoretical and Applied Mechanics Laboratory of the University of Lorraine, France. Christian Moyne is CNRS research director at the Energy, Theoretical and Applied Mechanics Laboratory of the University of Lorraine, France. Alain Degiovanni is professor emeritus at the Energy, Theoretical and Applied Mechanics Laboratory of the University of Lorraine, France, and research director at the International University of Rabat, Morocco.