Simulation of Deformations in Thin Shells Clamped in a Gripper with Wrap-Around Jaws

摘要

The study considers the simulation of reversible deformations in thin-wall shells clamped with a gripper with wrap-around jaws using SolidWorks Simulation FEM modeling software. It was found that for the workpiece outer diameter equal to the wrap-around jaws inner diameter the load applied is evenly distributed along the circumference of the shell. It is shown that after releasing the workpiece deformations are the key contributors to the final dimensional error. The end face diameter is evenly increased by 0.00147 mm forming a faucet-like geometry. A method of reducing organic cross section profile errors in thin-wall welded shells caused by clamping in three-law grippers is proposed. The simulation results confirm the prevalence of reversible deformations in the shell since after unloading the permanent deformations are next to nothing.