COMSOL Plasticity Tutorial: Tube Compression with Rigid Jaws and Contact

COMSOL Plasticity Tutorial: Tube Compression with Rigid Jaws and Contact In this COMSOL Multiphysics tutorial, we simulate the plastic deformation of a metal tube compressed by two rigid jaws using the Solid Mechanics interface. The tutorial demonstrates how to set up contact conditions, define rigid domains, apply symmetry and prescribed displacement boundary conditions, and perform a nonlinear elastic–plastic analysis. The model also highlights the importance of using Form Assembly instead of Form Union for contact problems, creating a structured mapped mesh, and improving convergence using auxiliary sweep parameters and load ramping. Finally, we investigate unloading behavior, residual stresses, and common convergence issues encountered in nonlinear simulations. 📌 What You’ll Learn: ✅ Plasticity modeling in COMSOL Multiphysics ✅ Contact pair setup between rigid jaws and a deformable tube ✅ Difference between Form Union and Form Assembly ✅ Symmetry, fixed constraint, and prescribed displacement boundary conditions ✅ Auxiliary sweep and load ramping for nonlinear convergence ✅ Loading and unloading analysis 📥 Download the COMSOL model file (v6.2): https://www.dropbox.com/scl/fi/cg2w5f... If you find this tutorial helpful, please like 👍 and subscribe 🔔 to my channel for more COMSOL and ANSYS tutorials. 🌐 Explore More: 🔗 https://arminhashemi.org/ 🛠️ Need Help with a Project? 📩 https://arminhashemi.org/order-project/ 📸 Follow Me on Instagram:   / caewitharminhashemi   💼 Connect on LinkedIn:   / cae-with-armin   💻 GitHub Repository: https://github.com/armin-hashemi 📂 Chapters: 0:00 0:41 Introduction 0:42 3:13 Model description 3:14 4:11 Model wizard 4:12 7:11 Geometry 7:12 7:47 Material 7:48 9:07 Contacts 9:08 11: 14 Boundary Conditions 11: 15 14:08 Mesh and Study 14:09 15:53 Add Plasticity 15:54 16:53 Result and 2D Mirror 15:54 20:51 Auixilaty sweep 20:52 23:29 Fixing Bonded Issue #COMSOL #COMSOLMultiphysics #Plasticity #PlasticDeformation #SolidMechanics #FiniteElementAnalysis #FEA #StructuralAnalysis #ContactAnalysis #NonlinearAnalysis #MechanicalEngineering #Simulation #CAEWithArmin #EngineeringSimulation #comsoltutorial