TY  - JOUR
Y1  - 2024///
KW  - Defects; Friction; Friction stir welding; Hydrodynamics; Lagrange multipliers; Shear flow
KW  -  AZ91 alloy; Flow prediction; Friction stir processing; Material Flow; Meshfree; Smoothed particle hydrodynamics; Smoothed particle hydrodynamics modeling; Stir zones; Temperature flow; Thermo-mechanical analysis
KW  -  Magnesium alloys
TI  - Numerical analysis of temperature and material flow predictions with defects in the friction stir processing of AZ91 alloy: An advanced meshfree SPH technique
N2  - The thermo-mechanical characteristics of Friction Stir Processing (FSP) in the AZ91 Magnesium alloy were simulated using a numerical model that used the Smoothed Particle Hydrodynamics (SPH) approach. Meshfree SPH technique, a particle-based Lagrangian approach, excels in monitoring field variables, interfaces, and material deformations. Its adaptability proves beneficial in FSP, especially for challenging experimental variables. The model in this work was analyzed against experimental data and developed via Altair RADIOSS FEM-based software. This SPH model resolves issues traditional grid-based systems struggle with, precisely predicting temperature, material flow, and tool tilt flaws. Strong agreement between measured and simulated temperatures across FSP phases confirms the SPH model's accuracy with errors below �5  around the shoulder perimeter 10 mm from the center of the Stir Zone (SZ). The SZ core reached 83  of the material's melting point, peaking at 666.3 K. In a tilted tool arrangement, the SPH model revealed an extended, defect-free SZ with elevated temperatures attributed to increased friction, improved material flow, and intensified shear pressures from tool churning. Evidence of plastic strain and deformation near the shoulder highlights the model's ability to capture complex thermo-mechanical dynamics in FSP. © 2024 Elsevier Ltd
EP  - 69
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85183454635&doi=10.1016%2fj.enganabound.2024.01.016&partnerID=40&md5=b4df3986b808e7729df8c39880054289
N1  - cited By 0
A1  - Marode, R.V.
A1  - Awang, M.
A1  - Lemma, T.A.
A1  - Pedapati, S.R.
A1  - Hassan, A.
A1  - Janga, V.S.R.
ID  - scholars19764
AV  - none
JF  - Engineering Analysis with Boundary Elements
SP  - 48
VL  - 161
ER  -