Week 4-1D Element Creation Challenge

Week 4 - 1D Element Creation Challenge

Objective : Mesh and Create 1D elements on the following component with given cross-section and DOF.

Given model image :

Given cross section and DOF :

1. Rod element :- Translational DOF should be Constrained with RBE2 link.

   Cross-Section: BOX a= 12 mm, b=10 mm and thickness t= 0.75 mm

2. Beam element :- All DOF should be constrained with RBE3 link

   Cross-Section: I-Section a= 8 mm, b= 10 mm, c= 8.5 mm, thickness t1= 0.75 mm, t2= 0.6 mm and t3= 0.6 mm

3. Bar element :- Constrain only x and y DOFs With RBE3 link

   Cross-section: X-section DIM1= 5 mm, DIM2= 1.2 mm, DIM3= 10 mm, DIM4= 1.2mm

4. Apply the mass of magnitude 10 with the RBE2 link

5. Apply the mass of magnitude 10 with the RBE2 link

f. Join the two components with Spring elements.

Procedure :

A) Import the geometry

• Click on the import from the main menu bar and select import geometry.
• Click on the import then the geometry appears on the display.
• The geometry imported appear as follows.

B) Create mid-surface

• Click on the geometry in the menu bar.
• Click on the mid-surface.
• Click on the surface and select the upper bracket and name it as bracket-1
• Similarly do it for the other bracket and name it as bracket-2.
• The mid-surfaces created appear as follows.
  

C) Create washer split on the geometry surface

• Click on the quick edit in the geometry menu bar.
• Click on the washer split and select the circular sections on the geometry.
• The geometry appear as follows.

D) Create meshing on surface

• Click on the 2D from the menu bar.
• Click on the automesh and enter the element size as 5 and select the mesh type as quad.
• Click create and the mesh forms on the geometry surface. It appears as follows.

E) Create properties and materials

• On the tab bar give the right click.
• Click on the create and select property.
• Create the properties and assign them the specific type of material and other details like thickness.
• Right click on the tab bar and select create.
• Create material and specify it as steel.
  

F) Create Rod element :

1) Translational DOF should be Constrained with RBE2 link

• Click on the 1D from the menu bar.
• Select the rigids on the menuSet element type to Rbe2.
• Select the circular nodes and create the Rbe2 as shown.
• Click on the rods in the 1D menu and select nodes of the Rbe2 links.
• Constrain the degrees of freedom for translational.
• Click on the create and now the rod appears on the screen between the Rbe2 links.

2) Cross section : Box

• Click on the hyperbeam in the 1D menu bar.
• Click on the standard section,select the optistruct and in element section select the BOX.
• Click on create,will be redirected to the hyperbeam view mode.
• The box will be created and seen.
• Enter the dimensions as, a= 12 mm, b=10 mm and thickness t= 0.75 mm.

3) Creating box section on the rod element

• Click on the model view and click on the rods in the 1D menu.
• Click on the rod property created in the tab bar and enter the card image as Prod.
• Specify the material type as steel,and beam section as Box created in the hyperbeam.
• Click on the rods in the 1d geometry and select update.
• Give the update properties i.e. box.
• In the menu bar select the 1D element representation,the box can be seen.

G) Create Beam element :

1) All DOF should be constrained with RBE3 link

• Click on the Rbe3 in the 1D menu.
• Click on the nodes and create the Rbe3 on the top and bottom brackets.
• Click on the bars and select the nodes,click on create and select the element type as CBeam.
• Constrain all the degrees of freedom.
• Click on create,now you can see the beam element created between the Rbe3 nodes.

2) Cross section : I-section

• Click on the hyperbeam view.
• Click on the standard section and select the element type as I section.
• Click on create,will be redirected to the hyperbeam view.
• Click on the I section rename it as beam and give the dimensions as prescribed,
• a= 8 mm, b= 10 mm, c= 8.5 mm, thickness t1= 0.75 mm, t2= 0.6 mm and t3= 0.6 mm.

3) Create I section on the beam element

• Click on the model view and update the property of beam for material as steel.
• Card image has to be set for Pbeam and beam section as beam.
• Click on bars in the 1D menu.
• Click on update and select the element type as beam,property as beam and click on update.
• Click on the 1D element detailed representation.

H) Create Bar element :

1) Constrain only x and y DOFs with RBE3 link

• Click on the Rbe3 in the 1D menu.
• Click on the nodes and create the Rbe3 on the top and bottom brackets.
• Click on the bars and select the nodes,click on create and select the element type as CBar.
• Constrain the degrees of freedom for only x,y .
• Click on create,now you can see the bar element created between the Rbe3 nodes.

2) Cross section : X - section

• Click on the hyperbeam view.
• Click on the standard section and select the element type as cross(X) section.
• Click on create,will be redirected to the hyperbeam view.
• Click on the X section rename it as bar and give the dimensions prescribed.
• DIM1= 5 mm, DIM2= 1.2 mm, DIM3= 10 mm, DIM4= 1.2mm.

3) Create X section on bar element

• Click on the model view and update the property of bar for material as steel.
• Card image has to be set for Pbar and bar section as bar.
• Click on bars in the 1D menu.
• Click on update and select the element type as bar,property as bar and click on update.
• Click on the 1D element detailed representation.

I) Apply the mass of magnitude 10 with the RBE2 link

• Click on the 1d menu and select the rigids and create the nodes create the rbe2 link on the d,e holes of the brackets.
• Click on the masses from the 1D menu.
• Enter the mass value as 10, mass type as Cmass1 ,select the Rbe2 links either sides click on apply.
• You can see the masses created at the Rbe2 links as below.
  

J) Join the two components with Spring elements

• Click on the 1D in the menu bar.
• Click on the springs.
• Select the nodes at the either edges of the bracket and select the element type as HMspring.
• Click on create , do it at the both edges of the brackets, result will be as shown in image.
  

Final model image :

This is the final output of all the tasks, click on 1D Detailed Element Representation.