Week 9 Machining with Planer Challenge

REPORT

MACHINING WITH PLANAR

OBJECTIVE

To perform explicit dynamics simulation on machining with planar to find out the equivalent stress, total deformation and temperature developed.

CASE 1

PROCEDURE

For this simulation, we have a workpiece and a cutting tool. To perform machining process, first set the work piece stationary and advance cutting tool towards the work piece so that the process will carryout.

We use steel 1006 for the work piece

and structural steel for cutting tool

Opened the model in mechanical GUI

This is explicit dynamics so we do not need contacts so deleted it. Stiffness behaviour of cutting tool is set to rigid.

MESH

A tetrahedron mesh is applied to cutting tool and six divisions are made to edge of the workpiece using edge sizing.

ANALYSIS SETTING

End time is set to 7.5e-4

Fixed support is given to workpiece

A velocity of 20000 milli meter per second is given to cutting tool

RESULT

THE EQUIVALENT STRESS

THE TOTAL DEFORMATION

THE TEMPERATURE OF BODY

CASE 2

Here the velocity given to cutting tool is 15000. All other procedures are same.

RESULTS

CONCLUSION

The simulation is completed successfully for the both cases. The maximum stress and temperature developed in case 1 is more than in case 2, this is because the velocity of cutting tool is more. The faster the machining process, the more stress and temperature developed.

When the machining process is faster, it increases the mechanical forces, thermal loads and dynamic effects, all of which contributes to greater stress development.