Week 4-1D Element Creation Challenge

AIM :

Mesh the Given component with the Size of 5 Units. Create 1D elements on the following component with given cross-section and DOF

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

Cross-Section: BOX- Dimension a= 12 mm

dimension b=10 mm

Thickness t= 0.75 mm

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

Cross-Section: I Section- Dimension a= 8 mm

Dimension b= 10 mm

Dimension c= 8.5 mm

Thickness t1= 0.75 mm

Thickness t2= .6 mm

Thickness t3= .6 mm

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

Cross-section: X section- Dimension DIM1= 5 mm

Thickness DIM2= 1.2 mm

Dimension DIM3= 10 mm

Thickness DIM4= 1.2mm

d. & e. Apply the mass of magnitude 10 with the RBE2 link

f. Join the two components with Spring elements

PROCEDURE :

• Import the cad model in hypermesh software
• After import the model check the if any lines are present in my model delete the lines and solid surface are also delete
• And now go to extract the midsurface
• They are two ways of extract the midsurface auto and manually
• Iam using manual method geomentry, surface edit, offset

• Create two independent midsurfaces. If they are to be in the same component, then transfer the midsurface. Go to tools organize, select surface, give destination, Move.
• Assign property to the misurface, also assign the material
• Give washer's split to the holes and 2D mesh the midsurface. Equate the nodes with the washer's split.
• And now mesh the component, element size of 5

• Before creating the 1d elements first creat the 'RBE' links in hole washer areas
• 'A' hole area creating the Translational DOF Constrained with RBE2 link
• 'B' hole area All DOF constrained with RBE3 link
• 'C' hole area Constrain x and y DOFs With RBE3 link
• Now assign the cross sections
• Rod - Cross-Section: BOX
• Beam - Cross-Section: I Section
• Bar - Cross-section: X section
• Open hyper beam view and create the cross section type and give values are diamension and thichness of the cross section
• After exit the hyper beam view now create the 1d elements
• Apply the mass of magnitude 10 with the RBE2 link in D & E
• joined the two components are using spring elements
• Indudially assing the 1d element properities

CONCLUSION:

The mesh & creation of 1D element has been successfully achieved as per the given inputs.