OBJECTIVE:
To create 1D elements on given component with given cross-section and DOF.
SPECIFICATIONS:
a.
Rod element:- with only translational DOF and RBE2 link
Cross-Section: BOX- Dimension a= 12 mm
dimension b=10 mm
Thickness t= 0.75 mm
b. Beam element:- with all DOF and 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:- with only x and y DOFs With RBE3 link
Cross-section: CROSS 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 RBE2 link
f. Join the two components with Spring elements
PROCEDURE:
1. Importing geometry
File-Import-Geometry-(Select file)-Import
2. Extracting midsurface and deleting solid part
Step 1: Extracting midsurface
Geom-midsurface-(Select the surface)-extract
(Here rename the component as 'Bracket_1')
Step 2: Create a new component
(Right-click) Component-create
(Here rename as 'Bracket_2')
Step 3: Deleting the solid part and wireframe
Step 4: Moving one midsurface to 'Bracket_2'
Tool-organize-(Select the surface)-Give dest component="Bracket_2"
Step 5: Changing colour
3. Meshing the brackets
Step 1: Creating washer split
Geom-quick edit-Give offset value='5'-(Select the lines)
Step 2: Meshing each bracket
2D-automesh-(Select the surface)-Give element size='8'-mesh
4. Creating material
(Right-click on the model tree) Create-material
Give material name as "Steel".
Give E='210000', Nu='0.3'
5. Creating properties
(Right-click on the model tree) Create-Property
We have to create properties for 'Bracket_1', 'Bracket_2', 'Rod', 'Beam', 'Bar' and spring
Give card image based on the property as given below:
| SERIAL NO. |
PROPERTY |
CARD IMAGE |
| 1 |
Bracket_1 |
PSHELL |
| 2 |
Bracket_2 |
PSHELL |
| 3 |
Rod |
PROD |
| 4 |
Beam |
PBEAM |
| 5 |
Bar |
PBAR |
| 6 |
Spring |
PBUSH |
6. Creating rod, beam, bar and mass elements
a) Creating rod
Step 1: Creating RBE2 link
1D-rigids-(Select the nodes)-Uncheck 'dof1', 'dof2' & 'dof3'-create
Step 2 : Creating rod
1D-rods(Select the nodes)-Give property='Rod'
b) Creating beam
Step 1: Creating RBE3 link
1D-rbe3-(Select the nodes)-Uncheck all the dofs-create
Step 2: Creating beam
1D-bar-(Select the nodes)-Give property='Beam' and elem type='CBEAM'-Give the orientation
c) Creating bar
Step1: Creating RBE3 link
1D-rbe3-(Select the nodes)-Uncheck 'dof1', 'dof2','dof4' and 'dof5'
Step 2: Creating bar
1D-bar-(Select the nodes)-Give property='Bar' and elem type='CBAR'-Give the orientation
d) Creating masses
Step 1: Creating RBE2 link
1D-rigids-(Select the nodes)-create
Step 2: Creating mass
1D-masses-Give magnitude='10'-Give elem type='CMASS1'-Give property='Bracket_1' or 'Bracket_2'-create
7. Creating springs
1D-springs-(Select the nodes)-Give property='Spring' and elem type='CELAS1'
8. Creating cross-section
1D-Hyperbeam-Select 'Standard section' (from left options)-Select 'HYPERBEAM' (from standard section library)-create
a) Creating box cross section
a= 12 mm
dimension b=10 mm
Thickness t= 0.75 mm
b) Creating 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) Creating X cross section
Dimension DIM1= 5 mm
Thickness DIM2= 1.2 mm
Dimension DIM3= 10 mm
Thickness DIM4= 1.2mm
9. Assigning cross-section to components
(Select components one by one)-Specify the correct beam section for each.
RESULT:
1)The geometry was imported and meshed.
2)1D elements were created on the given component with given cross-section and DOF.
