Week 9 Machining with Planer Challenge

Machining with a Planer Report

 

Aim: You will have to perform an explicit dynamics simulation to find out the Equivalent Stress, Total Deformation and insert a User defined result to calculate the temperature of the body. You need to perform this for 2 cases. One will be with a cutting velocity of 20000mm/s and the other will be with a cutting velocity of 15000mm/s. 

Procedure:

 

Case 1: Velocity of Cutting Tool = 20,000 mm/sec

• Select Explicit Dynamics, drag and drop into Project Schematic.
• Steel 1006 is chosen under Engineering Data.
• Under geometry tab, import the given geometry, double-click to open Space Claim to register the model.
• Body Interactions were set to frictionless.
• Mesh size was set to default.
• The mesh method was set to tetrahedrons for the cutting tool.
• An edge sizing of 10 was given to the workpiece
• Under explicit dynamics tab, we set the analysis to 1 step with end time 7.5e-4s.
• Velocity of 20000mm/sec is given to the cutting tool.
• The workpiece is fixed.
• Equivalent plastic strain of workpiece, total deformation, temperature (user defined from Solutionsà worksheet) and Equivalent Stress plots are requested from the solver as outputs.
• Run the simulation by clicking on “solve”.

Total Deformation:

Eq. Stress:

Eq. Plastic strain:

Temperature:

Case 2: Velocity of cutting tool = 15000mm/sec

• Select Explicit Dynamics, drag and drop into Project Schematic.
• Steel 1006 is chosen under Engineering Data.
• Under geometry tab, import the given geometry, double-click to open Space Claim to register the model.
• Body Interactions were set to frictionless.
• Mesh size was set to default.
• The mesh method was set to tetrahedrons for the cutting tool.
• An edge sizing of 10 was given to the workpiece
• Under explicit dynamics tab, we set the analysis to 1 step with end time 7.5e-4s.
• Velocity of 15000 mm/sec is given to the cutting tool.
• The workpiece is fixed.
• Equivalent plastic strain of workpiece, total deformation, temperature (user defined from Solutionsà worksheet) and Equivalent Stress plots are requested from the solver as outputs.
• Run the simulation by clicking on “solve”.

Total Deformation:

Eq. Stress:

Eq. Plastic strain:

Temperature:

Conclusion:

From the above simulations, here is the inference:

Case: Velocity	Eq. Stress (MPa)	Tot. Deformation (mm)	Eq. Plastic Strain	Temperature (deg C)
Case 1: 20,000mm/sec	679.63	33.078	1.4982	399.94
Case 2: 15,000mm/sec	671.8	28.921	1.4975	393.59

We can observe that the deformation in case 2 is lower owing to the difference in velocities. The cutting tool traveling at 20,000 mm/sec deforms the workpiece much more than that at 15,000 mm/sec.