Ip Substrate models

Objective:

Perform geometry clean up and mesh the model for structural analysis with target element size of 5mm for the given Ip Substrate models.

Procedure:

# Open one IP substrate model and then open quality criteria and go to presentation parameters tab then click on the check box Draw cons in PID, MID ...mode likein ENT mode in Visualization mode.

# As we have to do perform mid surface meshing on five IP substrate models, we will set quality parameters and mesh parameters to one model and then openone by one.

Element size: 5mm

• Aspect ratio: 3
• Skewness: 45
• Warping: 30
• Taper: 0.5
• Min. Length: 3mm
• Max. Length: 7mm
• Min angle Quad: 45
• Max angle Quad: 135
• Min angle tria: 30
• Max angle tria: 110
• Tria% : 15

#Check for topological errors through geometry checks fom utility window and correct them by using UNIVERSAL DELETE, COONS, FITTED, PASTE, RELEASE, HOTPOINTS.

# A mid surface can be created by three options as follows:

1. By using OFFSET: FACES > OFFSET > select the faces need to offset and enter offset value and then select cancel not to delete original faces.

2. By using MIDDLE: FACES > MIDDLE > select single or multi option and select faces as per selection to create middle surface.

3. By using MIDSURFACE: FACES > Mid.Surface > select the entire model and give the min thickness value and also corresponding options to make. By doing this mid surface with mesh created in FE mode.

The first to methods takes more time but give accurate results for generating the mesh and the third method takes very less time but not accurate when compared with the first two. based on our requirement and complexity in model we can choose one method.

# Select Mid surface and select the entire model

# similarly peform the remaining four models.

Second model:

Third Model:

Fourth Model:

Fifth Model:

# Go in to hidden mode and hide the geometry,by this we can find some quality criteria issues. by using SPLIT, SWAP, RECONSTRUCT, MV SURF, PASTE, JOIN functions.

First model:

Second Model:

Third Model:

Fourth MOdel:

Fifth model:

Conclusion:

Performed geometry clean up and meshed the models fo structural analysis with target element size of 5mm