Photo Realistic Rendering
TITLE: DESIGN OF AMERICAN CHOPPER BIKE
OBJECTIVE: To design and model the parts of the American Chopper bike, assembling the parts to get the final product and finally rendering it to give it a nice finished look.
INTRODUCTION: The parts are designed, modelled and assembled in "Solidworks 2015". It is a 3D CAD and CAE Software built by Dassault Systémes . The rendering of the model is done in Photoview 360 or Solidworks visualise.
DESIGN METHODOLOGY:
DESCRIPTION:
After the reference sketch is created and idea of the model is generated the part modelling and designing is done in Solidworks . The American Chopper Bike Consists of 13 parts. These are as follows:
- Transmission Belt
- Rear Fender
- Front Fender
- Kickstand
- Chain
- Oil tank
- Pedal
- Front Tyre
- Front Fork
- Rear Tyre
- Engine
- Chassis
- Gas Tank
These parts are created using different tools and features in solidworks and are given appropriate appearances. We will take a look at all these in details.
TRANSMISSION BELT:
Mainly a power transmitting device. It is a device used to transmit power from the engine to the gear box. The material used in making transmission Belts is PVC.
The features used in designing of transmission belt are:
Extrude: It is used to convert our 2D sketch into a 3D model
Fillet: It is to give nice smooth rounding to the hard edges in the model.
Fig 1. Transmission Belt
REAR FENDER:
It is fitted on the rear wheel and its primary function is to prevent the sand and mud particles being thrown into the air by the rotating tires. It is made up of high quality painted metal.
The features used in the modelling of this part are:
Revolve
Split
Fillet
Shell
Revolve: This feature is used to create a circular section using a sketch and a centreline along which the sketch is revolved.
Split: It is used to cut the bodies which are not required in the model by using a simple sketch.
Shell: The shell features hollows out a part, leaves open the faces selected and creates a thin walled features on the remaining faces
Fig 2. Rear Fender
FRONT FENDER:
Just Like Rear fender Front Fender also serves the same purposes but it is fitted onto the front tyres. Material used is high quality painted metal.
The features used in modelling of the front fender are:
Revolve
Split
Fillet
Fig 3. Front Fender
KICKSTAND:
It is a device on bikes that allows it to be kept upright without leaning against another object or the aid of the person. It is usually a piece of metal that flips down from the frame and makes contact with the ground.
The features used in modelling of this part are:
Loft
Extrude
Extrude Cut
Dome
Split
Fillet
Loft: This feature allows us to create complex geometry in a single feature It does this by interpolating the surfaces of different cross sections.
Extrude Cut: This Feature allows easy removal of a material from solid by extruding a profile along its normal.
Dome: It helps in creating a dome like shape on the faces of the solid models.
Fig 4. Kickstand
CHAIN:
It is a mechanical device for transmitting power from one source to another. In bikes it is used to transmit the power from the engine to the tires.
The features used in chain modelling are:
Extrude
Curve Driven Pattern
Sketch Block
Fillet
Mirror
Curve Driven Pattern: This feature allows us to create a pattern along a planar or a 3D curve. Any Sketch Segment can be patterned along the open curve or closed curve by using this feature.
Sketch Block: The sketch which are to be used multiple times in a model can be converted into sketch blocks to save time. After converting into a block it can be used multiple times and thus saves time.
Mirror: It is a feature used in creating a copy of the feature or sketch about a face or a plane.
Fig 5. Chain
OIL TANK:
This tank is a storage device used for storing oil for the bikes.
The features used in modelling of this part are:
Extrude
Combine
Fillet
Shell
Combine: This feature is used to convert different bodies to a single body and also it is used to subtract one body from another if they are intersecting.
Fig 6. Oil Tank
PEDAL:
It is fitted on bikes to rest our foot on while driving the bike.
The features used in modelling of the pedal are:
Extrude
Fillet
Linear Pattern
Dome
Chamfer
Linear Pattern: This Feature is used to create multiple instances of one or more features that can be spaced uniformly along one or two linear paths.
Chamfer: This feature allows us to create a sloping surface at the edge or corner of our solid body.
Fig 7. Pedal
FRONT TYRE:
It is the system that moves the bike. It consists of the rotor disk brakes attached to it.
The features used in modelling of the parts are:
Revolve
Extrude
Extrude Cut
Circular Pattern
Revolve Cut
Extrude Cut
Combine
Fillet
Chamfer
Circular Pattern: This Feature allows to create multiple instances of the sketch or feature along a circular edge.
Revolve Cut: It is used to cut the parts which are not needed in the model by using a sketch and revolving it along an edge.
Fig 8.Front Tyre
FRONT FORK:
It is the handling system of bikes. The headlights are mounted on this front fork and it is connected to the front tyre.
The features used in creation of this model are:
Revolve
Extrude
Fillet
Linear Pattern
Extrude Cut
Dome
Revolve Cut
Sweep
Move/Copy Body
Combine
Sweep: This feature is used to create a solid body by moving a closed sketch along a pre defined path.
Move/Copy Body: This feature allows to move or copy any solid body in x y or z direction
Fig 9. Front Fork
REAR TYRE:
It is used for moving the vehicle. It consists of chain sprocket for the fitment of chain.
The features used in modelling of this part are:
Revolve
Extrude
Extrude Cut
Circular Pattern
Revolve Cut
Extrude Cut
Combine
Fillet
Chamfer
Fig 10. Rear Tyre
ENGINE:
It is the heart of the bike. All the power are generated by the engine.
The features used in modelling of the part are:
Extrude
Revolve
Circular Pattern
Fillet
Extrude Cut
Dome
Sweep
Split
Combine
Chamfer
Mirror
Project Curve
Composite curve
Project Curve: This feature is used to create a nice 3D curve by projecting two curves drawn on different planes.
Fig 11. Engine
CHASSIS:
It is main framework of the bike. It is the one which supports all the other parts and thus it should be hard and rigid.
The features used in the modelling of this part are:
Project curves
Sweep
Mirror
Extrude
Extrude Cut
Revolve
Split
Chamfer
Fillet
Combine
Fig 12. Chassis
GAS TANK:
It is used to store the gas required for the running of the bike. It is mainly fitted on the upper half of the chassis.
The model is modelled using surface modelling and then it is converted into a solid model.
The features used in the modelling of the part are:
Surface Sweep
Surface Trim
Lofted Surface
Boundary Surface
Split Line
Surface Extrude
Fillet
Sweep Cut
Project Curves.
Knit Surfaces
Surface Sweep: This Feature allows to generate a surface from a section curve positioned along a path.
Surface trim: It is to consume bodies which are not need in the model .
Lofted Surface: This feature creates a surface between the edges by creating a smooth tangency between the Selected Curves.
Boundary Surface: This feature also creates surface between the boundaries or edges. Specify the edges for both the direction for the surface.
Split line: This feature is used to project the sketch onto the surface our model.
Surface extrude: This feature converts the projected surface into a 3D surface.
Knit Surfaces: This feature is used to bind together all surfaces and combine them as a single surface. In this there is also an option of converting them into solid.
Sweep Cut: It is used to cut a solid body by a closed sketch along a definite path.
Fig 13. Gas tank
ASSEMBLING OF AMERICAN CHOPPER BIKE:
After the part designing and modelling and giving suitable appearance to the parts comes the next step of assembling all the parts to make our final product.
The assembly is done in the assembly file of solidworks. The components are inserted one by one and different mates are applied to fix them. The chassis is taken as the reference.
Some of the mates used in this project are mentioned below:
Concentricity
Coincident
Width Mate
Angle mate
Parallel mate
The final assembly Pictures in different views:
Fig 14: Assembly Front View
Fig 15: Assembly Side View
Fig 16: Assembly Isometric View
Fig 17: assembly Top View
Fig 18: Assembly Camera Seet Up view
RENDERING OF THE ASSEMBLY:
After the assembly of the bike it is time to render the assembly to give it a nice finished look. The rendering can be done in solid works visualise or photo view 360.
- First of all select a suitable scene and a suitable environment for rendering the image.
- Make sure that that the image is nicely illuminated and clearly visible in the rendered image. If not different types of lights can be added, for e.g. directional light, spot light, sun light.
- Add decal graphics to the bike to give it a nice look.
- The Camera can be added to obtain the desired view for the render.
- After adding all these check it in the preview window and if satisfied go for the final render.
The American Chopper Bike Assembly has been rendered using Photo view 360.
Scene: Sunny Kitchen
Environment: Day Time
Fig 19:Assembly Render Isometric View
Fig 20: Assembly Render Front View
Fig 21: Assembly Render Side View
Fig 22: Assembly Render Camera Set Up view
CONCLUSION:
- The parts were designed and modelled in Solid works 2015. Got a good understanding of the solid modelling and about the different tools and features used in Solid works.
- The parts were assembled together to get the final product. Learnt the different ways to assemble the parts by applying different mates.
- The assembly was rendered using photoview 360.Learnt to apply the background scene, light and set up camera. Also learnt to add the decal graphics to the product.
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