Anisotropic plasticity?damage material model for sheet metal — Regularised single surface formulation

Prediction of Instability in Planar Anisotropic Sheet Metal Forming Processes

In this paper instability of planar anisotropic sheet metal during a few forming processes is investigated for the first time. For this reason components of the constitutive tangent tensor for planar anisotropic sheets are developed. By using the above tensor location of necking is predicted. Direction of the shear band is also predicted using the acoustic tensor. A finite element program is pr...

Crack Tip Constraint for Anisotropic Sheet Metal Plate Subjected to Mode-I Fracture

On the ground of manufacturing, sheet metal parts play a key role as they cover about half of the production processes. Sheet metals are commonly obtained from rolling and forming processes which causes misalignment of micro structure resulting obvious anisotropic characteristics and micro cracks. Presence of micro cracks poses serious attention, when stresses at the tip reach to the critical v...

Process Information Model for Sheet Metal Operations

The paper extracts the process parameters from a sheet metal part model (B-Rep). These process parameters can be used in sheet metal manufacturing to control the manufacturing operations. By extracting these process parameters required for manufacturing, CAM program can be generated automatically using the part model and resource information. A Product model is generated in modeling software an...

Surface Engineering in Sheet Metal Forming

A Simple Model of Sheet Metal Assembly

This paper is meant to serve as a case study of mathematical modeling in industry. The problem, which arises in the automotive industry, is to predict the variation in the final assembly given the variation in the parts and tooling. In this paper, we present a simple model of welding and clamping of beams which demonstrates that the order in which the clamps and welds are applied influences the...