Week 4- Challenge

Objective : 1) To study & perform midsurface extraction in hyperworks.

2) Create 1D elements on the given component with different cross sections and DOF

Midsurface:

• Midsurface is nothing but the surface between the two surfaces.The midsurface is a 2D representation of 3D or solid objects

Import the model:

• Firstly, model needs to be imported in hyperworks.
• Followed the path as import geometry > select IGES > select the model file.

Extract midsurface:

• Step 1:Selected the geometry tools option in main menu page
• Step 2:Selected midsurface tool
• Step 3:Selected the surface of the ‘bracket_body_0’ and selected extract
• Step 4:The midsurface was extracted and renamed it as Bracket_1

• In model view window followed the path as : create > material and
  a new component was created as Bracket_2
• Repeated the procedure from step 1 to step 4 for ‘bracket_body_1’

Move midsurface under component created:

• Step 1: selected the Tool option in main menu page

• Step 2:Selected midsurface of ‘bracket_body_1’ component under surface tab and selected move.

• Delete solid objects bracket_body_1’ and bracket_body_0’

Create material:

• Step 1: In model view window followed the path as : create > property

• Step 2: Renamed it as Steel.

• Step 3: Selected the card image defining the steel material.

Create property:

• Step 1: In model view window followed the path as : create > property

• Step 2: Renamed it as Bracket_1 and Bracket_1

• Step 3: selected the card image as PSHELL and material as steel.

• Step 4: assigned thickness of 2 and 2.5 to bracket_1 & bracket_2 respectively.
  
  

Assign the property to the component:

• Step 1: Selected the Bracket_1 and Bracket_2 component in model view.

• Step 2: respective property was specified to the respective component.

Create mesh:

• In order to create mesh, washer split was created for holes to ensure proper mesh

• Step 1: In main menu page, selected 2D option and automesh tool was selected
• Step 2: Selected the surfaces of both the component

• Step 3: Selected the mesh size as 5 and mesh type as mixed and selected mesh.

Create RBE2 link at washer a:

• Step 1: Followed the path as main menu page>1D>rigids

• Step 2: Selected create option and set nodes selection option as multiple nodes and calculate mode.

• Step 3: Selected element type as RBE 2

• Step 4: Deselected dof1, dof2 and dof3 to give only translational DOF (degree of freedom).

• Step 5: Selected create option.

Create RBE2 link at washer d & e:

• Step 1: Followed the path as main menu page>1D>rigids

• Step 2: Selected create option and set nodes selection option as multiple nodes and calculate mode.

• Step 3: Selected element type as RBE 2

• Step 4: Deselected dof1, dof2 and dof3 to give only translational DOF (degree of freedom).

• Step 4: Selected create option

Create RBE3 link at washer b and c:

• Step 1: Followed the path as main menu page>1D>RBE3

• Step 2: Selected create dependent option and set nodes selection option as multiple nodes and calculate node

• Step 3: Deselect all dofs to give DOF in all direction at washer b.

• Step 4: Deselect dof1 and dof2 to give DOF in only X and Y direction.
  
  

Create Bar, Rod and Beam sections:

Create Bar section:

• Step 1: Followed the path as main menu page>1D>HyperBeam

• Step 2: Selected the standard section and selected section type.

• Step 3: Selected create tab and HyperBeam window was opened.

• Step 4: Followed path as create>standard section>hypermesh>Thinwalled box

• Step 5: Given dimensions were applied to the section.

Create I section Beam:

• Step 1: Followed the path as main menu page>1D>HyperBeam

• Step 2: Selected the standard section and selected section type.

• Step 3: Selected create tab and HyperBeam window was opened

• Step 4: Followed path as create>standard section>hypermesh>Standard section

• Step 5: Given dimensions were applied to the section.

Create Cross cross section:

• Step 1: Followed the path as main menu page>1D>HyperBeam

• Step 2: Selected the standard section and selected section type

• Step 3: Selected create tab and HyperBeam window was opened.

• Step 4: Followed path as create>standard section>Optistruct>Cross

• Step 5: Given dimensions were applied to the section

Create properties for Bar, Rod and Beam elements:

• Step 1: In model view window followed the path as: create > property

• Step 2: Created property for each rod, bar and beam element with same name respectively.

• Step 3: Selected card image as:

  • PROD for Rod

  • PBAR for Bar

  • PBEAM for Beam

• Step 4: Selected cross section for respective property.

Create Rod element at washer a:

• Step 1: Followed the path as Main menu page>1D>Rods

• Step 2: Selected create option and selected the start and end nodes.

• Step 3: Selected property as rod and element type as CROD and rod element was created

Create Beam element at washer b:

• Step 1: Followed the path as Main menu page>1D>bars

• Step 2: Selected bar2 option and selected the node A and node B.

• Step 3: Selected property as Beam and element type as CBEAM

• Step 4: Selected N1, N2 and N3 nodes for orientation and Beam element was created.

Create Bar element washer c:

• Step 1: Followed the path as Main menu page>1D>bars

• Step 2: Selected bar2 option and selected the node A and node B.

• Step 3: Selected property as Bar and element type as CBAR

• Step 4: Selected N1, N2 and N3 nodes for orientation and BAR element was created

Apply mass at washer d & e:

• Step 1: Followed the path as Main menu page>1D>masses

• Step 2: Selected create option and selected node

• Step 3: Specified magnitude of 10.

• Step 4: Selected element type and selected create.

Final Model:

Conclusion:

• We successfully extracted midsurface and created 1D elements on given model with given cross section and DOF.