Week 4-1D Element Creation Challenge

AIM- To Mesh the component and Create ID elements with given cross-section and DOF in Hypermesh.

Parameter

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 12- 6 mm

Thickness 13-6 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 RBE 2 link

f. Join the two components with Spring elements

Procedure

Importing and Geometry cleanup

- As the file is in IGES format, we will Import it in the Import Geometry tab.

- After Importing the model, it consists of 2 components on which we have to perform the Meshing, and 1 wireframe which is not required so we will delete that wireframe component

- Thereafter, we will check if it has a solid body, as we do not require solids for our purpose, so we will delete all the solids from the model, and we will be left with the surface only.

Extracting Midsurface -

- After deleting the solids, we will extract the mid surface of the model so as to perform meshing on that.

- As the model is simple in geometry we can extract the mid-surface by using the Auto mid-surface option in 1-D.

- We will extract the mid-surface only by only for both the component.

Meshing -

- After creating the Mid-surface of both the component, we need to create a washer split on the holes to perform a better meshing around

it.

- Also we will toggle the unusual lines on the surface for better meshing.

- Then we will go to the Automesh tab in 2-D. provide the element size to be 5 and select the element type to be mixed.

- Then we will select the surface one by one to do mesh and hit on the mesh tab.

Create rigid points & 1-D element -

As per the given parameter, I create RB2 & RB3 elements at the required places (a,b,c & d), and provide the DOF accordingly.

- Then I create the 1-D element rod, bar and beam at the respective node points a,b & c.

- Also apply the mass at node d and create spring between 2 brackets at desired point e.

Creating 1d hyperbeam

RESULT

Doing all the process, we can visualize it in 1-D detailed element representation.