Week 4-1D Element Creation Challenge

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

Note: Attach the Hypermesh model files (.hm) with the challenge

ANSWER -:

- Download the model then go to the geomatry to create the surfaces and extract the model.

- These are basically elements which will have infinite stiffness. (these elements will never bend and move when load is applied)

- Load transferred through RBE 2 elements will be the same.

- 1D>rigids>create>single node as dependent node and single node as independent node >create the 2 nodes RBE2 elements.

- 1D>rigids>create>change dependent node as multiple nodes and independent node as calculate node> select dependent multiple nodes then create to many nodes RBE2 links.

- RBE 3 elements can be created the same way as RBE 2 elements.

- Go to the hyper beam section then give to the input as per Question then create a Rod, Beam and Bar.

- Applied the mass and Join the two components with spring elements.

MODEL -:

Bar -:

Rod -:

Beam -: