Theses and Dissertations
A constitutive material model for simulating texture evolution and anisotropy effects in cold spray.
Mississippi State University
Bammann, Douglas J.
Stone, Tonya W.
Date of Degree
Graduate Thesis - Campus Access Only
Master of Science (M.S.)
James Worth Bagley College of Engineering
Department of Mechanical Engineering
Cold spray has seen rapid advancement since its inception and has shown significant potential as a method of additive manufacturing. However, the large plastic deformation and repeated heating/cooling cycles that the material undergoes during the cold spray process can result in gradients in material structure and large residual stresses. The purpose of this study is to extend the existing EMMI material model to include anisotropic material response through the use of orientation distribution functions to predict residual stresses and anisotropy resulting from cold spray and similar additive manufacturing processes. Through the use of a finite element simulation, yield surfaces for a two-step tension problem were generated and analyzed to capture the effects of the four coaxiality parameters that govern the model.
Giles, Creston Michael, "A constitutive material model for simulating texture evolution and anisotropy effects in cold spray." (2022). Theses and Dissertations. 5667.