FDS-01: SIMPLE FLUID FLOW ANALYSIS USING FDS (FIRE DYNAMICS SIMULATOR) TOOL

 Tutorial-02: Pivot Bracket CAD model development using Free CAD software 

CAD File of Pivot Bracket:

Figure 1 Pivot Bracket having Dimensions 

Steps required for CAD making process using FREE CAD software:

Steps I: Start the software and select "part design" module in freeCAD software, it is assumed that you have already installed freeCAD software (Version should be latest )

Figure 2 Start menu of FreeCAD software (Version 0.19)

Step-II: Select "Create body" option in Part Design module of the FreeCAD software

Figure 3 Create Body option for making body in FreeCAD software

Step-III: Create Sketch, after selecting of creating body option, time to select "create sketch" option for making the sketch for the Pivot Bracket. 

Figure 4 Create Sketch option selection

As you click on create sketch command, a popup window will open, in which you must be required to select one base plane for making the first sketch.  (Green Color is the confirmation of the selection of the base plane for making the sketch)

Figure 5 Base Plane Selection for making Sketch

Step IV: Manage "Edit Controls" in sketch window

Figure 6 Manage Controls for making Sketch 

Note: It is not mandatory to select these controls but from my suggestion, please select these buttons for better working environments 

Step V: Create base design as per figure 1 without dimensions, in this case, you should select a side face for making the base sketch design for making the pivot bracket. 

Figure 7 base Sketch without Constraint 

Now give dimensions as shown in figure 8 

Figure 8 Dimensions of base Sketch

As per these dimensions, the final fully constraint sketch is shown in figure 9 and the total constraints required for this sketch are following: 

One Angle Constraint for 45 or 135 angle

Second Angle Constraint for 135 angle

perpendicular Constraint for 12 mm edge for both sides 

Apply Length Constraint of 12 mm for Both Sides

Use Length and parallels Constraints to complete the base Sketch

The Final fully Constraint Sketch and 3D object made by PAD Command (80 mm length) is present in Figure 9 and Figure 10. 

Figure 9 Fully Constraint base sketch

Figure 10 base Design using PAD command

Step VI: Create a cylindrical object on base object as seen in figure 11

Figure 11 Cylindrical Object on Base Object

Use dimensions provided in figure 1 and then create this object. 

Select flat face for making circles for the cylindrical object (See figure 12)

Figure 12 Cylindrical Object Sketch with required Dimensions