Week 5 Bending of iPhone

Report Week5 Bending of Iphone

Aim: Run 2 cases for iphone bending process

Case 1: Simulate the model as it is given in the video

Case 2: Move the bottom fingers from their defined position to the given position X= 22.5mm & Z= 10mm and obtain the results for the simulation. Also define the S-N curve for the Aluminium Alloy material as per values given below and determine the fatigue life results for the same.

The results should include:

• Obtain the directional deformation for the model
• Factor of Aluminium Alloy NL
• Life of the Aluminium alloy for the case
• Compare the results and present with the conclusion.

Procedure:

case 1:

Material: Add Structral Steel (fingers), Al Alloy NL (frame) and Polyethylene (inside), add new material Glass (display)

Import Geometry

Contact:

Joint

Mesh

Contact area using mesh size 4mm

Analysis Setting

Fixed Support

Displacement

Displacement Joint

Result

Directional Deformation in Y axis - Frame

Equivalent Stress - Frame

Equivalent Strain - Frame

case 2:

Add S-N curve to AL Alloy NL

Move the bottom fingers from their defined position to the given position X= 22.5mm & Z= 10mm

Result:

Directional Deformation in Y axis - Frame

Equivalent Stress - Frame

Equivalent Strain - Frame

Fatigue safety factor - Frame

Fatigue life - Frame

Conclusion:

Both cases are simulated as requested. Results are shown above.

Compare case 1 and case 2:

	Max Deformation Y axix	Max Stress	Max Strain	Fatigue safety factor	Fatigue life
case1	5.32	619.15	0.00879	NA	NA
case2	4.42	388.33	0.00631	0.2-10.9	0-1e8

It is observed that the max deformation, max stress and max strain of case 1 are more than case 2, because in case 2 pushing fingers are at middle of frame. Case 1 has no fatigue information because there is no S-N curve of frame.