Tool_Wear_Lab1

http://www.cadfamily.com/a/CAE_FEA_CFD/Forge-CAST/Tool-Wear-Lab1_4158.html

Problem Summary:
This lab will demonstrate how to set up the model data for tool wear computations in a
typical cold extrusion process. The objective is to understand the tool wear behavior of extrusion
die. Tool wear is mainly dictated by process conditions and materials used. This model illustration
assumes that the coefficients used have been calibrated under steady wear conditions for a given
process involving a set of die and work piece materials. These coefficients should be used with
caution and for qualitative evaluation only when applied to any other process or material
conditions. Currently DEFORMTM system has Archard’s model and Usui’s model apart from the
user routine support. Typically Archard’s model is widely used for forming applications and
Usui’s model is used for machining applications to compute insert wear. Archard’s model can be
used with either isothermal or non-isothermal runs. On the other hand Usui’s model can be run
only be used in non-isothermal mode as it requires interface temperature calculations as well. For
both of these models the die (or insert, in case of machining) should be meshed, with appropriate
boundary conditions and inter-object relations defined. This lab will glance through the complete
problem setup with emphasis on tool wear part of the data and assumes user is familiar with the
typical problem setup procedures.
1 . Starting a new problem
Start a new problem for cold extrusion processes. From the main menu select problem ID
and enter preprocessor