RADIOSS Engine File Editing & 3D Meshing.

Target: 1)To Generate tetra and hexa mesh on given component with in the critriea given

Target size	5mm
Tet Collapse	0.15
Hex size	10mm

1.1) Modal Input

1.2)To Generate 3D mesh on The Given Housing model And to check for The Tet collapse and quality.

• The Given Housing Model was Imported in the new file format in radioss block.
• The model consists of two componenets hub and cover
• each componenet is meshed invidually
• At first the 2D mesh was generated in Cover and HUB and after that its meshed using tetramesh.
• 3D mesh was genertaed over The 2D mesh And before meshing the Component with 3D the parameters were Given in the Tetramesh parameters pannel.
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• To ensure whether the componenet is meshed properly some elements are masked using mask or F5
• After that quality was checked in the Check elemnts pannel by giving the set of conditons given in the Model.
• The Tet collpase Is checked finally after meshing And its ensured that no elements are failing for Tet collpase.

1.3)Hexa meshing the arm Bracket.

• The Given Bracket Model was Imported In a new Radioss block format.
• The Arm Bracket Is divided in to 4 components, hide All the componentsexcept the one to be meshed.
• The 2D mesh was Generated over the Base first with the element Size 5.
• The elements are remeshed And Made sure that there is no Trias and Rotating quads
• To convert the shell into 3D element offset option was used here as the component is uniform square, from The 3D pannel 3D> Element Offset.

After completing meshing, the component is hidden, arm cve is made to shw with boundaries ofprevious base model.

• since the arm curve is in the form of circle an centere node is created by using ARC center option in the nodes Pannel by selecting any lines in the arm curve
• 3D > Spin Option is used to create the mesh by spinning the Element across the Arm curve by using Shell Elements by considering the node at centre.
• Select Spin Elements > 2D Shell elements > Y axis > Base point as centre node of the arc > Angle 90 > Spin Density of 25 (layer of elements) > Spin.

• After spinning the elements formed are 3d elements so for creating shell elements face was created over Arm curve by using Tool> Faces> find faces
• The face of the Arm straight is meshed with 2d mesh
• The no.of elements in the face of the arm curve should match with the no of elements in the arm curve.
• Thus It forma an shell layer between both the components.

• Select the Linear solid > Select the elements on arm curve face > Node points which are to be selected in same manner on Arm straight Mesh and assign the density as 15 and choose solids.

• Hide the Arm straight part, make Boss as current component.
• 2D mesh was Generated over the Boss and elements are matched accordingly
• Nodes are projected in equal line at the joining of arm straight and the boss.using project point option from F11.
• Choose> soid map>general from the 3D pannel.
• Select Elements to Drad > To The source Surface >By the Node Path so the connectivity will be equal and create the mesh.

Finally delete the faces and turn on all the geometry and check for connectivity.

2)Data Input :

E-201GPA

Density:7.8^-6kg/mm^3

2.1)Output_Engine_file: