Challenge

Week 4-1D Element Creation Challenge

Objective: To Mesh the Given component with size of 5 and create 1D element with given cross sections 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.

CAD Model:

Procedure:

Open the Hyper mesh software.first we need to import the model by selecting Import<geometry<IGES

Then create midsurface for lower bracket and rename it.
Delete solids by Selecting delete<solids<all<delete.
Rename the midsurfaces as bracket 1 and bracket 2.and hide the surfaces.
assign material by right click<create<material<steel<return.
create properties for bracket1 and bracket2 .create<properties
click on this properties and assign thickness 2 and 2.5.keep element type as shell and add material.

Go to components and click on bracket1 and assign proprties to it.and same as for bracket2.
Go to quick edit and give washersplit of 5mm offset at all holes.
Go to 2D<mesh<automesh
the mesh will generated on the components.
then create rbe2 link at a,rbe3 link at b,rbe3 link at c,rbe2 link at d&e.

Go to rods select nodes,and assign property of rod,element type c rod same as beam and bar element.
Go to masess<create<nodes< give mass value 10 and property of bracket2 and element type as cmass.

Go to springs select nodes and create spring elements.total 6 spring elements are created.

Results:

The component is meshed with 5mm size and created 1D element with rbe2,rbe3 links and the cross sections of given dimensions are defined.

Ship work like this
in your own course.