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  

Ans:

• Firstly import the IGES model into the window panel and then find out the thickness of both the brackets.

        Bracket 1 =5mm

        Bracket 2=5mm

• Now extract the mid surface of the 1st bracket and rename it as bracket_1 and create the new component and name it as bracket_2 

• The creation of a new component is because the extracting of the second bracket is going to merge on the 1st mid surface itself. 
• After the creation of 2nd component now extract the mid surface of the 2nd bracket and move that mid surface into the bracket_2 

        Tool>organise>see which component is listed>surface>move.

• Now insert the material in the model panel and rename it as steel
• And also create the two properties name it as Bracket-1 and bracket_2 and assign the material as steel, thickness as 5mm 
•        
• Now assign the mid surface brackets properties 
•       
• After creating all this, add a washer split with an offset of 5mm for every hole in the model

• Now auto mesh the displayed component 
• construct the Rbe2 and rbe3 elements as per mentioned in the question and list the dof according to the requirement.
• now create a 1d bar, rod, and beam to the corresponding element as they mentioned in the question.
• In the question they mention that for a, b, and c hole there is a different cross-section 
• To create the cross-section for the holes there is a command called hyberbeam where we can select the type of cross and can give the dimension as per the user require 

• After creating the cross-sections, import the other 3 properties name them as rod, bar and beam, and assign the card image and beam section as respectively 

• Once all this done go to the 1d panel and assign the property for rod, bar and beam and update it

• To give the mass and spring just select the node on the element and create it
• Now on the o 2D Transatinal and element representation view