3D Softweres

FreeCAD

Rhino.6

Blender

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ABout FreeCAD

FreeCAD is a free and open-source (under the LGPLv2+ license) general-purpose parametric 3D computer-aided design (CAD) modeler and a building information modeling (BIM) software with finite element method (FEM) support. FreeCAD is intended for mechanical engineering product design but also expands to a wider range of uses around engineering, such as architecture or electrical engineering. Because of the free and open-source nature of the software, users can extend the functionality of the software using the Python programming language.(wikipedia)

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Click on new file, opening new window select start. In drop down menu select sketcher mode and select XY plane.

Draw a rectangle from the upper side of the screen .you can select line, circle, hexagon etc from this.Select right corner point of Rectangle and clicked it on the XY plane.

select proper dimension from the upper constraint menu.

Used fillet option so that the corner of the rectangle becomes circular and set its dimension with constraint menu or select element from left side, select part for which you have to applied the constraint

Press escape button ,go to the start and select mode part design.

Create a body and select the sketch option. .

Used the pad option. Select prespective view as shown in image.

Select the top plane and select fillet option on the screen upper side

Select extrude pocket and hole option.

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About Rhino.6

Rhino is basically used to create, edit, analyze, document, render, animate, and translate NURBS curves, surfaces and solids, subdivision geometry (SubD), point clouds, and polygon meshes. There are no limits on complexity, degree, or size beyond those of hardware..(wikipedia)

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An open window of Rhino consist of number of tools as shown in image .

The opening window of Rhino .consist of four views perspective , Top, Front and Right.

It is very user firendly.

You can select the different 2D and 3D geomatrical shapes fromthe left side of the screen.

It has some special features like

Gridsnap- for precise grid

Ortho- for Straight line movement

Planer- for 2d drawing

Osnap- Perfect sticking of two shaps

Smart track- Perfect Alignment

At bottom side of the screen different point possition are given

Drawn some basic 2D shapes in Rhino.

Drawn some basic 3D shapes in Rhino.

Solid view of some 3D shapes in Rhino.

Trying to design Chess pawn as object in Rhino.

In front view draw a line using "Csacade Line" tool.

Draw curve line using "Cascade Curve" tool.

Join the curve using "Join" commond.

Revolving the curve using the "Revolve" commond.

The solid view of an object.

Now chaning the color of an object. Select the wire frame of an object. Select the material type and color.

Now click on "Cascade Render" tool.The rendering get started.

The rendering image of an object given shown below.

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About Blender

Blender is a free and open-source 3D computer graphics software toolset used for creating animated films, visual effects, art, 3D printed models, motion graphics, interactive 3D applications, virtual reality, and computer games. Blender's features include 3D modeling, UV unwrapping, texturing, raster graphics editing, rigging and skinning, fluid and smoke simulation, particle simulation, soft body simulation, sculpting, animating, match moving, rendering, motion graphics, video editing, and compositing.(wikipedia)

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An open window of blender consist of number of tools as shown in image .

You can select box, cursor, move, rotate an object with left hand side tools on the screen.

You can check type of object, its Xray view, rotating an object along axis, zoom, toggle the camera and changing the projection from the right corner of the screen.

There is camera and light source on the screen near an object.

You can also identify the numbers of shortcut keys used in blender .

Go to the edit menu select Blender Preference and go to the Keymap.

Some of keys are

0 for camera mode

1 for front view

For moving along X axis press G and X

For rotating along X axis press R and X

For editing given object

Select given object

Go to the object mode select edit mode .

You can change the object according to Vertex

Select vertex point ,press G and move it along X axis as shown in image.

For surface modification goto to add select mesh select monkey

Go to the add modifier select sub division surface

Paper fold through Paper Model

Select edit, go to the preference mode select Addons select Export Paper model.

For adding shape select add ,select Mesh and select ico sphere shape.

Select object mode ,select edit mode ,select any edge from which you want to open the object. mark as seamed.

Export the paper model in PDF format.

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About 2D Animation

Go to file ,select New, goto 2D Animation.

Write text in the window

Save the file in proper format render it.

The 2D animation video

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About Simulation.

A simulation is the imitation of the operation of a real-world process or system over time. Simulations require the use of models; the model represents the key characteristics or behaviors of the selected system or process, whereas the simulation represents the evolution of the model over time. Often, computers are used to execute the simulation.Simulation is used in many contexts, such as simulation of technology for performance tuning or optimizing, safety engineering, testing, training, education, and video games. Simulation is also used with scientific modelling of natural systems or human systems to gain insight into their functioning, as in economics. Simulation can be used to show the eventual real effects of alternative conditions and courses of action. Simulation is also used when the real system cannot be engaged, because it may not be accessible, or it may be dangerous or unacceptable to engage, or it is being designed but not yet built, or it may simply not exist.(wikipedia)

Now trying the simulation in Blender.For this I am going with the Neil's example.

Open the Blender. Go to Add ,select Mesh,Torus.

The torus appear at the center of the screen.

Set the parameters as given in the image.

Now make copy, move and rotate the second torus.

Make chain of torus as shown in the image.

Select first torus make its passive and apply the following parameters.

Now start the animation, see the chain is hanging in downward due to its mass.

Now make other end torus passive. The chain is hange between the two passive torus in downward direction as shown in the image.Here I found effect the mass and gravity in the simulation process.

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Learning outcomes

I learnt how to use 2D raster GIMP software and its application like change image color,size etc.

I learnt how to use 2D vector Inkscape software using Inkscape bitmap trace for logo formation and finding about vector image.

I learnt three 3D cad designing software such as FreeCad ,Rhino.6 and Blender .

This is totally new thing i have learn in this week.

I found that Freecad is quite difficult to use but it is precised while Rhino and blender easy to used.

The interface of Rhino is very user friendly also with commond line you can perform any operation with its detail action.

Blender is mostly use for animation purpose.

Its amazing to used paper fold concept of making paper model in Blender.

Its good learning thing to use simulation tool in Blender.

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Downloads

Download all the original Files

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