Advances in mechanical engineering and mechanics selected papers from the 4th Tunisian Congress on Mechanics, CoTuMe 2018, Hammamet, Tunisia, October 13-15 2018 - Benamara, Abdelmejid; Haddar, Mohamed; Tarek, Benameur; Salah, Mezlini; Fakher, Chaari (Lecture notes in mechanical engineering, 2019)