Abstract
In metal forming process analysis, the accuracy loss is inevitable for complex boundary shape, un-uniformly distributed points and high velocity gradient distribution in analysis domain. In order to improve simulation accuracy, an h-adaptive procedure for the background required rigid (visco) plastic meshless Galerkin method is developed. A mixed posteriori error indicator is presented, which consists of a cell energy rate integration error estimator and a cell energy rate approximation error estimator to indicate the integration error and the approximation error, respectively. The corresponding local refinement strategies are developed, and the adaptive refining procedure is given. The adaptive procedure is applied only once in each time step simulation for the consideration of computational efficiency. A bulk forming process with severe metal deformation is analyzed. In comparison with the results obtained by using software Deform-2D, the effectiveness of the method developed in this paper is demonstrated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
