A Robust Numerical Procedure for the Thermomechanical Flow Simulation of Friction Stir Welding Process Using an Adaptive Element-Free Galerkin Method
Joint Authors
Wu, C. T.
Hu, Wei
Wang, Hui-Ping
Lu, Hongsheng
Source
Mathematical Problems in Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-07-16
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
A meshfree modeling technique of material flow in the three-dimensional multiphysics thermomechanical friction stir welding process is presented.
In this numerical model, the discretization in space is derived by the Element-Free Galerkin method using a Lagrangian meshfree convex approximation.
The discrete thermal and mechanical equations are weakly coupled as the time advances using a forward difference scheme.
A mortar contact algorithm is employed to model the stirring effect and heat generation due to frictional contact.
Heat conductance between contacting bodies is considered as a function of contact pressure.
A two-way adaptive procedure is introduced to the coupled thermomechanical system to surpass potential numerical problems associated with the extensive material deformation and spatial discretization.
In each adaptive phase, a consistent projection operation utilizing the first-order meshfree convex approximation is performed to remap the solution variables.
Finally, a three-dimensional multiphysics thermomechanical coupled friction stir welding problem is analyzed to demonstrate the effectiveness of the present meshfree numerical procedure.
American Psychological Association (APA)
Wu, C. T.& Hu, Wei& Wang, Hui-Ping& Lu, Hongsheng. 2015. A Robust Numerical Procedure for the Thermomechanical Flow Simulation of Friction Stir Welding Process Using an Adaptive Element-Free Galerkin Method. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-16.
https://search.emarefa.net/detail/BIM-1073948
Modern Language Association (MLA)
Wu, C. T.…[et al.]. A Robust Numerical Procedure for the Thermomechanical Flow Simulation of Friction Stir Welding Process Using an Adaptive Element-Free Galerkin Method. Mathematical Problems in Engineering No. 2015 (2015), pp.1-16.
https://search.emarefa.net/detail/BIM-1073948
American Medical Association (AMA)
Wu, C. T.& Hu, Wei& Wang, Hui-Ping& Lu, Hongsheng. A Robust Numerical Procedure for the Thermomechanical Flow Simulation of Friction Stir Welding Process Using an Adaptive Element-Free Galerkin Method. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-16.
https://search.emarefa.net/detail/BIM-1073948
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1073948