Numerical and experimental comparison of hemispherical punch stretching test
Published 2011-12-30
abstract views: 9 // Full text article (PDF): 6
Keywords
- Sheet metal forming,
- finite element method,
- ABAQUS,
- ASAME,
- 3D scanning
How to Cite
Copyright (c) 2011 This work is licensed under a Creative Commons Attribution 4.0 International License.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Abstract
During the recent years, a huge amount of effort has been dedicated to the numerical methods capable of modeling sheet metal forming processes. The aim of this effort is to reduce the die tryout period. In this research, a comparative study was performed between experimentally and numerically obtained strains, part geometries and sheet thicknesses. Different sheet metal specimens were clamped between circular die rings and deformed by a hemispherical punch. Before the sheets had been formed, they were marked with line patterns grid to measure the deformations after the test. Measuring of the strains and calculation of the thickness was performed with the Automated Strain Analysis System (ASAME). Prediction of the strains was performed with ABAQUS. In addition to this, geometrical comparison was also performed by measuring dimensions of the specimens with using 3D scanning optical device.