Photo Realistic Rendering

Aim:

REPORT ON ASSEMBLY OF CHOPPER MODEL

DESIGN OF AMERICAN CHOPPER USING SOLIDWORKS

Objective:

The objective of the project is to model an AMERICAN CHOPPER using a CAD (computer aided drafting) software-SOLIDWORKS and to render it with

SOLIDWORKS Visualize to create a Photorealistic view of it.

Introduction:

This project explains the designing of American chopper using the CAD software SOLIDWORKS from sketching the parts and modelling them to final

rendering of the assembly to give a photo realistic view.

Methodology:

1.Part Modelling

2.Assembly

3.Rendering

1.Part Modelling:

In part modelling, first the 2D sketch of the part is sketched using the tools in sketch tab and then the 2Dsketch is converted into a 3D part using features in the features tab.

Features Used:

Boss Extrude: This feature is used to expand the object in 3D according to sketch plane.

Extrude Cut: Extrude cut feature used to cut/remove the 3d object in linear path according to sketch.

Fillet: Fillet is a feature used for making round internal or external edges to avoid sharp edges and make it smooth.

Lofted Boss/Base: Lofted boss is a feature used to achieve Complex Shapes. It does this by interpolating surfaces between various cross-sections of a model.

These cross-sections can be sketches, faces, or edges.

Split: Split tool is used to split single solid part into two solid parts. It is used to project an entity onto other surfaces or curved/planar faces.

Dome: Dome is a feature used to make dome shaped extrude including elliptical dome.

Shell: Shell feature is used to make to hollow space in solid part by selecting outer wall of the solid part and so removes the inner parts.

It is also used to reduce the specific thickness.

Combine: Combine tool is used to make integration of two solid parts which intersect each other as same solid part.

Chamfer: Chamfer is used to make a sharp edge or corner slightly tapered rather than being a perfect square.

Linear Pattern: The linear parent is used to create a different number of instances required to create the pattern linearly.

Curve Driven Pattern: Curve driven pattern is used to make any pattern which followed by the curve is sketched before.

Circular pattern: Circular pattern is a feature used to make 3d feature into circular pattern according to number of insistences.

Revolve boss base: Revolve feature is used to make cylindrical or circular 3D extrude along with a given reference axis as per drawn sketch.

Revolve cut: Revolve cut is used to cut or reduce the extrude of cylindrical round surface.

Move/copy body: This feature is used to move/copy the 3D body to one place to another place.

Mirror: Mirror is used to mirror a feature or body by reference of the selected plane.

Sweep: This feature is used to sweep any kind of fully defined sketch along with the path.

Sweep cut: Sweep cut is same as sweep feature but its directly proportional to sweep which makes a cut along with the sweep path.

Swept Surface: It is used to make a surface along with a path the curve is driven.

Boundary Surface: Boundary surface is used to make a surface in between two finished surfaces.

Loft Surface: Loft surface is used to make loft in between two profiles along with guide path.

Knit surface: Knit surface is used to knit the two free edges or open edges of the surfaces together also it reduces the gap between the two edges of the surface.

Surface Trim: Primarily used to cut away material from a surface, and provides two modes: Standard and Mutual.

Projection Curve: Projection curve is a 3D curve which is projected on the basis of the two different 2D curves in two different planes.

Blocks: You can make save, edit and insert blocks from the drawing items and sketch entities that you use often such as standard notes, title blocks,

label positions and so on you can attach blocks to geometry or to drawing views

Trim entities: it is used to trim the unwanted lines or extended entities in the sketch.

Appearances: An appearance defines visual properties of the model including colour and texture. Appearances do not affect physical properties which

are defined by materials. every material is a assigned a default appearance.

2.Assembly:

Assembly is most often referred to putting components together in an assembly line, but more specifically, it refers to creating a complete product

that performs an intended function. Changes in the component are automatically reflected in the assembly i.e. The rebuild option will automatically take

place or else it will ask the user to rebuild the document.

ASSEMBLY APPROACHES IN SOLIDWORKS:

1.Top-Down Approach

2.Bottom-Up Approach

3.Rendering:

Rendering or image synthesis is the automatic process of generating a photorealistic or non-photorealistic image from a 2D or 3D model using a computer program.

The resulting image is referred to as the render.

MAJOR CATEGORIES IN RENDERING:

1.Real-Time Rendering

2.Pre-Rendering

Software Used:

1.Photoview 360

2.Solidworks Visualize.

Components :

• Transmission Belt
• Kick Stand
• Front Fender
• Rear Fender
• Chain
• Oil Tank
• Pedal
• Front Wheel
• Rear Wheel
• Front Fork
• Chassis
• Engine
• Gas Tank

Descprition:

1.Transmission Belt:

Features used:

• Offset entities
• Extrude boss
• Fillet
• Appearances

This transmission belt is designed to adapt to the two pulleys created on one side of the engine block.

It is a simple model created using very fewer tools like line,curve and extrude boss/base.

2.Kick Stand:

Feature used:

• Loft boss
• Extrude boss
• Extrude cut
• Dome
• Split
• Fillets
• appearance

Kickstand for this bike is of a very simple kind made by the application of sweep feature.

An opening is kept for it to fix it to the chassis and the Dome is applied at the ends of the kickstand.

3.Front Fender:

Features used

• Offset entities
• Trim entities
• Revolve boss
• Dynamic Mirror
• Split
• Appearances

The front fender for this bike is designed simply by revolving the cross-section and cutting away material at the end to make it pointed.

Revolve and split tools are the most used tools here.

4.Rear Fender:

Features used

• Offset Entities
• Trim Entities
• Revolve boss
• Appearances

The rear fender is thicker but shorter compared to the front fender.

It doesn't have a pointed end like the front fender, rather rounded end as in the Idea of sketch. Revolve and split tools are the most used tools here.

5.Chain:

Features used

• Trim entities
• Fillet
• Blocks
• Extrude boss
• Linear Patterns
• Appearances

It is the most complex part of the whole design project. It consists of 390 bodies including separate bodies for all the inner plates, outer plates, and the pins.

The major feature used in this part is the Curve driven pattern which allows each instance of chain parts to follow the curve drawn initially for the chain.

It is essential to keep all the elements of this chain as a separate body because it has to rotate along the curve and around the sprocket which is not

possible if it is merged to make a single body.

6.Tank

Features used

• Boss Extrude
• Combine
• Fillet
• Shell
• Appearance

The oil tank is placed above the engine block which is also made hollow inside. Extrude and shell are the major features used in this part.

7.Pedal:

Features used

• Extrude boss
• Fillet
• Linear pattern
• Dome
• Chamfer
• Appearance

There are two pedals, left and right. Among them, only the right pedal was sketched and designed in the part design environment and the left was made using

the in-context features of the assembly environment. It is designed to sit into the holes provided at the bottom of the chassis on both sides.

8.Front Wheel

Features used

• Revolve boss
• Trim entities
• sketch fillet
• Boss Extrude
• Revolve Cut
• Linear Pattern
• Chamfer
• Cut Extrude
• Circular Pattern
• Appearance

The front wheel is thinner than the rear wheel. It is designed to be a multi-body part consisting of the rotor, sprocket, rim, tire, and the calliper all are made to be single bodies.

Mostly used features include revolve, extruded cut, and circular pattern.

9.Rear Wheel:

Features used

• Revolve boss
• Trim entities
• Fillet
• Extrude Boss
• Planes
• Revolve cut
• Linear pattern
• Chamfer
• Fillet feature
• Extrude Cut
• Circular pattern
• Appearance

The rear Wheel is much thicker than the front wheel. Just like the front wheel, it is also designed to be a multi-body part consisting of the rotor, sprocket, rim,

tire, and the calliper all in a single part. Mostly used features include revolve, extruded cut, and circular pattern.

10.Front Fork:

Features used

• Extrude boss
• Trim entities
• Revolve boss
• Split
• Move/copy bodies
• Dome
• Mirror
• Combine
• Projected curve
• Sweep boss
• Appearance

It is the most unique part of this American Chopper bike. It is longer than usual bikes and the angle is extremely low with respect to the horizontal.

The handles are shorter and are customized according to their comfort. For this model, revolve features is mostly used. It consists of two headlights

11.Chassis:

Features used

• Offset entities
• Convert Entities
• Project Curve
• Trim entities
• Sweep boss
• Split
• Revolve Cut
• Extrude boss
• Fillet
• Combine
• Appearance

The chassis is the frame that bears most of the load on the bike.

In the design process of this chassis, the mostly applied features are splines, sweeps, project curves, split, etc.

The lower tube is mirrored with respect to the mid-plane.

The rear plate supports the rear arm which holds the hub from only one direction so it is designed to be stiff enough.

12.Engine:

Features used

• Trim entities
• Revolve Boss
• Extrude Cut
• Offset entities
• Dome
• Fillet
• Projected Curve
• Composite Curve
• Sweep boss
• Mirror
• Circular pattern
• Split
• Appearance

The engine used in this bike is a V engine with two exhaust pipes. Although it is the solid modelling of the engine block, it covers most of the aspects of the engine block.

It incorporates the cooling fins, spark plug representation, intake and exhaust manifolds, transmission unit with the transmission belt, and pulleys.

13.Gas Tank

Features Used

• Projected curve
• Trim entities
• Sweep boss
• Loft surface
• Knit surface
• Sweep Cut
• Fillet
• Appearance

The fuel tank for this American Chopper is designed as per the info sketch. It is hollowed out to make a tank for the fuel inside.

The mostly applied features include extrude surface, boundary surface, shell, and knit surface. Sienna is assigned as its appearance and decals are applied.

ASSEMBLED AMERICAN CHOPPER: Assembly is most often referred to putting components together in an assembly line, but more specifically, it refers to creating a complete product

that performs an intended function. Changes in the component are automatically reflected in the assembly i.e.

The rebuild option will automatically take place or else it will ask the user to rebuild the document.

The American chopper is assembled using the feature called mates. Each and every part is mated with the other or the base part with specific relation.

Some relations that are used to mate the parts of American chopper are mentioned below,

• Concentric
• Coincident
• Parallel
• Tangent
• Width

FINAL RENDERS OF AMERICAN CHOPPER

CONCLUSION:

Thus, the parts of the AMERICAN CHOPPER are designed and assembled using SOLIDWORKS and are rendered to photorealistic images using PHOTOVIEW 360 and SOLIDWORKS

VISUALIZE.