Week - 5 - 2D meshing for Plastic components

AIM-

To extract the midsurface and mesh the given bottle cap component under given quality criteria.

S.R NO QUALITY CRITRIA VALUE.

1 Target/avrage length 1

2 minimum length 0.5

3 maximum length 3

4 aspect 3

5 warpage 15

6 skewness 45

7 jacobian 0.7

8 minimum quad angle 45

9 maximum quad angle 135

10 minimum tria angle 30

11 tria percentage 15

PROCEDURE-

step 1 - importing the component.

click file--open--bottlecap.

change the draw mode to entity.

step 2- sepration proccess.

1) click the set pid icon and select the seprate entities.

2) by using the boolien operation like OR,AND,NOT present in the focus menu.

3) after sepration, store the each component in deprate name for easier usage.

step 3- geometry cleanup.

1)by using the manage the lock operation , show the perticular working componet in worspace.

2) by using the orient option , modify faces of the componet.

3) by using the fine option , change the resolution of the curves and cons.

4) cleanup the geometry , by using in the various command.

5) after the geometry cleanup , go to checks> geometry for fine cleanup that we missed.

6) And click the excute , and excuation proccess must shown as 100% and status as green mark as show below.

7) if there is any error shown, try the fix option by right click the error or fix it mannualy.

step 4- crating the midsurface.

1) after geometry cleanup , measure the thickness of the component.

2) for measuring the thickness , use the measure the command in the utilities option.

3) in the measutre the option, choose selection as nodes and select the two nodes, as shown below.

4) check the thickness of component across various places to ensure the same thickness.

5) then the select the OFFSET option in FACES command.

6) then the select the face option and click the eitgher surface or lower surface of the component.

7) then the click the feature command to the select the overall upper surface of the given component.

8) then the click the middle mouse button and the give the offset distance( thickness/2) and the click okk.

9) click no for deleting the parent the component.

10)now midsurface foe this is now created.

step 5- preparing for mesh.

1) again by using the fine command , we improve the resolution of the 3D curves.

2) then the change topo to mesh mode.

3) then the select the length option in the perimeter command.

4) select the pereimeter and the select the whole component and give length as 5 beacause of our target length is 5.

6) identify the place where length between the two nodes is less than 0.4.

7)by using the cut and join command alter surface cons with minimal defeature.

8) once again check the geometry for our midsurface by using the checks> geometry option.

step 6- assign quality criteria.

1) after doin g this procces , we have to assign the quality criteria for our mesh.

2) to do this , press f11 key from our keyboard.

3) then the assign various quality criteria as menstioned below.

4) then, click the mesh paramter command in the utilities.

5) in that mention the target element size, minimum and maximum element size and the click ok.

step 7- meshing.

1) now we have to generate mesh for our component.

2) for the selecrt the best ihe mesh genration option.

3) best command give the better mesh quality by using the best algorithm.

4) then change to hidden mode shadow mode for identifying element fails.

5) by using reconsytruction and split command give the better mesh flow for that surface.

6) avoid the tria element as fillets eliminate by using that swap , split and join using command.

7) no mesh transition or constant radius fillets curvature.

8) these steps be followed for another components also.

step 8- split, join, swap and paste commands.

1) use the split command for dragging the traisto forward in the component.

2) use join command for joining the two trais to the forward in the component.

3) use swap command for dragging the trai sideways.

4) use paste command for dragging the trai backword direction.

5) use this tool effectively for obtaining the better meshflow in the component.

6) and to eliminate the opposite trais and rotating quads.

step 9- apply property.

1) after doing the mesh ffor all components, we have to assign the thickness for the indivisual componets.

2) for that click the proprety icon in the list command.

3) then the assign the thickness for the indivisual component.

conclusion-

the midsurface and meshing for the given bottlecap component under criteria is done succesfully.