Скачать или смотреть Backward Extrusion Process: Showcase of EFG Method

In bulk metal forming processes such as extrusion, forging, and rotary piercing, the material undergoes severe deformation, making it impractical to model and analyze using conventional finite element methods. 🔍📊 In my previous research projects, I employed methods like Smooth Particle Hydrodynamics (SPH) [https://lnkd.in/gyH_uUer][https://lnkd.in/gXevVav5] and Arbitrary Lagrangian-Eulerian (ALE) [https://lnkd.in/gCwCHNA8][https://lnkd.in/gRG7vrU5] to tackle these challenges effectively. 💡🔄

But today, I showcase the application of the Element-Free Galerkin (EFG) formulation in the backward extrusion process. This method offers a unique perspective where the mesh is “alive” and adapts dynamically to the shape of the tools. While EFG can be applied to materials like rubber or foam 🧽 that undergo large deformations, it is particularly suited for efficient simulations of cutting, bulk forming, and forging processes. ✂️🛠️ The standout features of this approach include local mesh refinement combined with implicit time integration, which are key enablers for handling these complex processes.

One of the unique parameters in the adaptive mesh refinement, exclusive to this method, is the option to allow or restrict mesh coarsening. In the last clip below, you can observe how the mesh becomes refined in regions with corners or sharp curvatures and then coarsens again in areas with fewer geometric features. Fascinating, isn’t it? 🤔✨

Other parameters, such as local adaptivity and interactive adaptivity, have been demonstrated in a previous numerical showcase. 📹💻 You can check it out here: [   • Rubber Deformation with EFG Remshing  ]

The numerical simulations of the backward extrusion process with the EFG method will be one of the interesting examples I’ll cover in my upcoming workshop 🖥️📅. Check out the details here: [https://lnkd.in/gYTqup2G]