Project 1 - 2D meshing on the instrumental Panel

PROJECT-1:2D meshing on the instrumental Panel (IP)

AIM:

To extract the mid surface and mesh the given component with given quality parameters and assign thickness respectively.

PROCEDURE:

• Open ANSA and Import the given model
• Peform Cons resolution,Go to MESH module > Perimeters > length, Give length as 1

• Perform TOPO,Go to TOPO module > FACES > TOPO

a)Before TOPO b)After TOPO

• Orient the surfaces,Go to TOPO module > FACES > ORIENT

a)Before Orient b)After Orient

• Check for the geometrical errors,Go to > Checks> Geometry
• Chwck and clear the geometrical errors

a)Before Geometrical checks b)After Geometrical checks

• Measure the thickness and store
• Give mesh parameters ,target length and the given quality criterias

a)Mesh parameters b)Quality parameters

• Use Casting method to take Mid surface and 2D Meshing
• Since casting is an automatic mid surface mesh generator,there may be chances for ANSA to crash
• Inorder to avoid crashing , dissect the model into parts
• Use PLANE CUT option to split the model

• Set new property ID using SET PID option

• Goto TOPO module>faces>Midsurfce>Casting
• Give minimum thickness and target element length
• uncheck the option, stop at geometrical errors

• Since casting is an automatic mid surface mesh generator,it will automatically mesh the mid surface
• Check the mesh flow and features
• Check for off elements and clear if any

• Follow the same procedure for the other splitted parts
• While using casting method, it will not capture dog houses properly
• To correct these problems,use ALIGN MANAGER option
• Go to TOPO module > Faces > midsurface >Align Manager>perimeters
• Select perimeters to align and select the points,ie start point and end point
• click finish

a)Before aligning base a)After aligning base

• Similarly define perimeters for each sides of the dog houses respectively

a)Before defining perimeters b)After defining perimeters

• Follow these steps for other dog houses
• For defining areas
• Go to TOPO module > Faces > midsurface >Align Manager> Areas

• Select the group of faces to align as shown below

a)First group b)second group

• The elements are aligned as shown below

• To join the dissected parts,use Paste option

• Similarly joint the parts and make it into a single PID
• Check mesh flow and off elements

• Use reconstruct,split and smooth option for better mesh flow and to avoid quality element failures

• Check for quality fails and clear them
• Finally assign thickness to the FEA model

Note:

• For some areas like smaller areas or elements near to triple cons , the elements fail for quality

Learning outcomes:

• Able to generate midsurface using casting method
• understood about how to use Align manager
• Understood all the concepts regarding mid surface generation
• Understood about mehing ,how to improve mesh flow and what are the techniques to be used to achieve it
• Able to capture Ribs and Dog houses properly

Conclusion;

The midsurface of the given IP model is successfully generated using Casting method ,Used Smooth and Re-construct options for better mesh flow and the meshing was performed with the given mesh and quality parametrs