Test Methods For Formability Of Sheet Metal

Sheet metal forming simulation is almost meaningless without accurate material data.

Test methods for formability of sheet metal. In this chapter 1 sheet metal formability tests such as the tensile test the plane strain test and the in plane stretching test are analyzed. Astm e646 stan dard test method for tensile strain hardening exponents of metallic sheet materials governs the determination of the strain hardening exponent. Tips for sheet metal testing. In sheet metal industry the initial estimation of formability is usually based on total elongation measured from the tensile test.

Anisotropy in sheet metals. To correctly and accurately capture the mechanical properties of material for use in simulation a tensile test is performed. Anisotropy in sheet metal can be useful in deep drawing and other forming processes. This inexpensive and simple way of evaluating formability however is not very reliable because while.

The old saying garbage in garbage out rings true in this regard. Astm e646 is a tensile test that measures the stress strain response in the plastic region prior to necking dp 0. The fem and experimental methods were used in order to demonstrate how two dimensional in plane simulation can help interpret and develop such tests as well as to understand the nature of material behavior and governing mechanics. During rolling the sheet develops anisotropy both in the plane of the sheet called planer anisotropy as well in the thickness of sheet called anisotropy ratio.