Example of Nut

This sample is known to work on the latest SALOME release.
The compatibility with previous versions of SALOME is not guaranteed, though the sample can work on old versions also.

Objectives:

This exercise illustrates the use of Geometry and SMESH SALOME functionalities for building and meshing the nut shape. Shape is built using Sketch, Transformations and Boolean operations,

Geometry functionalities used in exercise:

Basic – Create Point, Vector
Build – Face
Explode
Sketch
Transformation – Extrusion, Revolution, Fillet, Chamfer
Boolean –Cut, Common
Import brep

Mesh functionalities used in exercise:

3D algorithm – Tetrahedron (Netgen), Hypothesis Max Element Volume
2D algorithm – Triangle (Mefisto), Hypothesis Max Element Area
1D algorithm – Wire discretization, Hypothesis Average Lengt

Geometry

The sequence of actions is as follows:

Launch SALOME.
Create a new study.
Launch GEOM module.


Creation of a wire using the sketcher Sketch_1: (menu New Entity/Basic/2D Sketch). Validate using Apply after each line.) First Point: 100 ; -57.7 Segment (Point - absolute): 100 ; 57.7 Segment (Point - absolute): 0 ; 115.47 Segment (Point - absolute): -100 ; 57.7 Segment (Point - absolute): -100 ; -57.7 Segment (Point - absolute): 0 ; -115.47 Sketch Closure.
Create a new Local coordinate system (menu New Entity / Basic / Local Coordinate System) (First constructor) select "X axis" direction Dx = 1 select "Y axis" direction Dz = 1 Creation of a second wire using the sketcher Sketch_2: (menu New Entity/Basic/2D Sketch) Select LocalCS_1 coordinate system. (Validate using Apply after each line.) X : 50 ; Y : 0 X : 80 ; Y : 0 X : 112 ; Y : 13 X : 112 ; Y : 48 X : 80 ; Y : 63 X : 80 ; Y : 90 X : 50 ; Y : 90 Sketch Closure.
Creation of a face: (menu New Entity/Build/Face). Objects: Sketch_1 Apply = Face_1. Objects: Sketch_2 Apply and Close = Face_2. Creation of reference vector VZ: (menu New Entity/Basic/Vector). 2nd Vector Constructor: (0 ; 0 ; 10.) Apply and Close.
Extrusion Extrusion_1: (menu New Entity/Generation/Extrusion) Base: Face_1 Vector: VZ Height: 100 Apply and Close. Revolution Revolution_1: (menu New Entity/Generation/Revolution). Object: Face_2 Axis : VZ Angle : 360° Apply and Close.
Boolean Operation Common_1: (menu Operations/Boolean/Common) Selected Objects: Extrusion_1, Revolution _1 Apply and Close. Creation of Fillet Fillet_1: (menu Operations/Fillet 3D) 2nd Constructor: Fillet on Selected Edges Main Object: Common_1 Selected edges: Common_1:28 Radius = 10. Apply and Close.
Creation of Chamfer Chamfer_1: (menu Operations/Chamfer) 4th Constructor: Chamfer on selected edges Main Object: Fillet_1 Selected edges: Common_1:115 D1 = 10, D2 = 10 Apply and Close.
Import a geometry: (menu File/Import). Select Files of type *.brep File is located at …\SAMPLES_SRC\Shapes\Brep Select File name slots.brep Open.
Boolean Operation Cut_1: (menu Operations/Boolean/Cut) Main Object: Chamfer_1 Tool Object: slots.brep_1 Detect Self-intersections = no Apply and Close.
Construction of the mesh Launch SMESH module. Creation of Mesh_1 : (menu Mesh/Create Mesh) Geometry : Cut_1 3D algorithm: Tetrahedron (Netgen) 3D hypothesis: MaxElementVolume = 50 2D algorithm: Triangle (Mefisto) 2D hypothesis: MaxElementArea = 20 1D algorithm: Wire Discretization 1D hypothesis: Local Length = 5 Apply and Close. Compute Mesh_1

Sections

Personal tools

Example of Nut

Example of Nut

Objectives:

Geometry

Construction of the mesh

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