Week 4-1D Element Creation Challenge

AIM:

To create 1D elements on the given component with given cross-section and DOF using hypermesh.

1. 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

1. 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

1. 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

1. & e. Apply the massof magnitude 10 with the RBE2 link
2. Join the two components with Spring elements

PROCEDURE:

1) IMPORTING THE GEOMETRY:

Import the geometry into the workspace and delete the wireframe.

2) CREATING THE MID SURFACE FOR THE GIVEN COMPONENT:

• Select the component and create a mid surface for the top component (bracket 1) by making it current selection.
• Select the component and create a midsurface for the bottom component (bracket 2) by making its current selection.

3) MESHING THE COMPONENT:

• To mesh the given component, we need to create washer splits near the hole region for a smooth mesh. Washer split offset we selected is 5mm.
• Generate the mesh with element size as 5mm with mixed element type.

4) CREATE MATERIAL:

We select steel as the material for this component.

5) creating the properties:

We created the properties for the respective component also creating rod, beam, bar & mass properties with assigning the card ID and material.

Serial Nos	Property name	Card ID
1	Bracket 1	PSHELL
2	Bracket 2	PSHELL
3	Bar	PBAR
4	Rod	PROD
5	Beam	PBEAM
6	Mass	PMASS

6) CREATE THE 1D ELEMENTS:

To create the 1D element, we need to go the hyper beam tool and select the respective cross-section for creating the 1D element and give the assigned dimension to the geometry as mentioned in the specification.

7) CREATE THE RIGID AT POINTS A, B, C& D:

Create the RBE2 And RBE3 at the respective holes with given DOF.

8) CREATE THE 1D ELEMENT ON THE RIGID:

• Creating the rod, bar and beam 1D elements at the respective node points.
• Update the 1D element with respect to their property.
• Create the mass at node d and spring between 2 brackets.

2-D ELEMENT DETAILED REPRESENTATION:

CONCLUSION:

• Extracted the mid-surface for the given component and created a mesh on the mid-surface.
• Deployed suitable 1D Element (RBE2, RBE3, ROD, BAR, BEAM, MASS, SPRING etc..,) to the respective places.
• Assigned cross-section and property to the 1D elements.
• Created solid representations of 1D Element.