Scientific Research Publishing

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52924#.VKygRcnQrzE Author(s)   Hamid Reza Rezaei Ashtiani * , Peyman Karami Affiliation(s) School of Mechanical Engineering, Arak University of Technology, Arak, Iran . ABSTRACT The mechanical properties such as hardness and ultimate tensile strength of metals depend on the grain size, which have to be properly controlled and optimized to ensure the better economy and desirable mechanical characteristics of the metals. In order to study the microstructure evolution of AA1070, many experimental tests were conducted at different cold working and annealing conditions. Utilizing the experimental results, the static recrystallization and grain growth behavior of AA1070 have been investigated and the developed equations that can be used to the FEM of the annealing process have been obtained. The agreement between numerical modeling and experimental results is r...

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52850#.VKs7q8nQrzE Author(s)     Fatou Samb 1 , Meissa Fall 1 , Yves Berthaud 2 , Farid Bendboudjema 3 Affiliation(s) 1 Laboratoire de Mécanique et Modélisation, UFR Sciences de l’Ingénieur, Université de Thiès, Thiès, Sénégal . 2 Sorbonne Universités, UPMC Univ Paris 06, UMR 7190, d’Alembert, F-75005, Paris, France . 3 Laboratoire de Mécanique et de Technologie, Ecole Normale Supérieure de Cachan, Cachan, France . ABSTRACT Within the framework of a FEM of the nonlinear behavior of lateritic pavement of Senegal, the effect of truck overloading is studied to estimate its impact on the deformability of road pavement on co...

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=48513#.VDtLAlfHRK0 Author(s)   Mikihito Hirohata , Yoshito Itoh Affiliation(s) Graduate School of Engineering, Nagoya University, Nagoya, Japan . Graduate School of Engineering, Nagoya University, Nagoya, Japan . ABSTRACT In order to propose high effective simulation using finite element method (FEM) for predicting deformation and residual stress generated by one pass butt welding, a series of numerical analyses were carried out. By idealizing the movement of heat source (the instantaneous heat input method), the tendency of welding out-of-plane deformation and the residual stress distribution could be predicted. The computing time was around 9% of that by the pr...