Week 12:Project-1-Meshing of Door Inner Panel Challenge

AIM: to extract mid surface and check the quality of the elements and asign the thickness to different component

Follow the Quality Criteria and mesh the following component and assign thickness:

Target Element Length = 4 Units

S.N	Quality Criteria	Value
1	Aspect Ratio	5
2	Skewness	45
3	Warping	15
4	Taper	0.5
5	Min. Length	2 Units
6	Max. Length	6 Units
7	Min angle Quad	45
8	Max angle Quad	135
9	Min angle Tria	20
10	Max angle Tria	120
10	Tria %	10

Important Points to Remember

• The area which is having more than 6mm thickness should not model in 2D. You can capture them like in the Below-mentioned picture

• The below image has some geometrical issue on it so modeling them in the 2D will be difficult.

• In those areas, the main objective is to capture the hole so we can take a mid surface by creating a flat surface with a hole like an image below.

• No need to model the below-mentioned area. The mentioned area does not have a proper attachment to the model.

• For variable thickness areas, Assign the thickness taking an average value of the cross-section

intially we are going to import the model from drive the model is inner pannel of door of the passenger car

process to import the model

click on import option from the main menu>click on import geometry >select file from drive >and click on import option

the geometry has been succesfully imported into the GUI

the next step is to check the model for any free edges or ony missing surface ,if any missing surface is found the we need to fix that surface

in this model their are lot of free edges and missing surface and we succesfully fix those errors

the next step is to extract mid surface .in this model we are going to extract mid surface by auto midsurface

click on F12 select >select ofsect+swipe+plane >select the surface >select displayed all>click extract

there are lot of surface that need to be fix ,we have used different tools to overcome those errors

we delete sum surfaces and create new surfaces

we create new ribs by taking ofset

steps to take ofset

click on geometry>select surface edit>select ofset >select the surface >select its duplicate >assign ofset value >click on vector normal >hit the ofset

now we are going to mesh the component by 2d shell meshing

before meshing the component we are going to set the quality criteria

procedure to set the quality creteria

click on preference >select creteria file editor>set the quality parameters

we have set the quality creteria now we are going to mesh the component with the given quality parameters

procedure to 2d automesh

press F12 >select surface from the drop down arrow>element size=4>mesh type=mixed>click on mesh

we can improve the mesh flow by left and right click to increase or decrease the no of nodes

we have done 2D meshing on the component succesfully now we are going to check the quality of the elements

click on 2d select quality index

in the below image we have many tools to clean the failed elements

from the below image the elements that voilates thresholds ,we have to fix these elements by using different tools

once the elements has been cleaned the next step is create components and we have to assign matterial and property

for that we need to click on the left tab are and click right >select creat option >select component

we have created different components

now we are going to create property and material

right click on tab area >select create >select property and assign the thickness and card image

since we have create different components having different thickness and thus we have to create different properties having different thickness

similar is the procedure for material but we can create a single plastic material for all the components

now we have to assign the property and material to each component

click on every component one by one and assign the corresponding properties and material

click on component >select assign >a window will open we have to assign the property

now we have succesfully assigned the material and property to each and every component

now we are going to conform whether we have assigned the material and property perfectly for that we need to click element colour mode

1 from the below image the default is by component we need to click on drop down arrow and click by property

2 we need to click on 2D detailed element representation

snap by property

snap by material

final view of the component

1.in this project we have learn how to assign the property and material to component

2 . we have learn how to extract the mid surface from complex plastic components

3. we have learn how to extent the surfaces that are not attached to the component

4.we have learn hoe to refine the mesh quality