Photo Realistic Rendering

TITLE: AMERICAN CHOPPER

OBJECTIVES

1.To know how to use all features in SOLIDWORKS

2.To model and assemble an American chopper in SOLIDWORKS

3. To perform rendering in SOLIDWORKS.

INTRODUCTION

A Chopper is type of a motorcycle and its characteristic features are long front ends with extended forks. So, by SOLIDWORKS we learn how to use different features like fillet, extrude, loft, sweep, chamfer and more others for different results. Also, after drawing we do assembly and rendering. And it has different components as follow:

COMPONENTS

• Chassis
• Engine
• Front wheel
• Rear wheel
• Front fork
• Transmission belt
• Kickstand
• Oil tank
• Chain
• Caliper
• Foot pedal
• Front fender
• Rear fender

First, we draw these components separately from each other and we do assembly for rendering.

 

DESCRIPTION

The SOLIDWORKS is the software that helps the designers to put their ideas or thoughts to reality. This software provides features and dimensions and also it gives a lot of detailed drawings.

SOLIDWORKS documents windows have two panels. the left panel, Manager panel.

Feature manager tree: display the structure of the parts, assembly, or drawings. select an item from the feature manager design tree or edit the underling sketch, edit the feature, suppress and unsuppressed the feature or component.

Property manager:  gives us the settings for many functions as fillet features, sketches and mates.

 

FEATURE MANAGE TREE               PROPERTY MANAGER

DESIN APPROACH METROLOGY:

Here we have a flow chat that shows the components of American chopper:

 

 

 

The following are features and properties used in designing the model:

EXTRUDE BOSS: Extrude boss is the feature which is used mostly to convert 2D sketch into 3D sketch.

 

 

 

EXTRUDE CUT: This one it helps to remove the unwanted material according to your desired shape.

 

 

FILLET AND CHAMFER:

Fillet is the feature that gives the smooth edges according to your dimension of radius and a chamfer also is similar to fillet there are both applies features they don’t need a sketch but creates beveled face.

FILLET

 

CHAMFER

 

 

SHELL: By shell we manage to remove a material from the inner body but we leave a small thickness and come up with a hallow model. Also, it can be opened or closed hallow depending at your choice.

 

REVOLVE BOSS FEATURE: First is a must to draw an axis in a sketch to be revolved, here by revolving feature we create a sketch around an axis.

 

 

MIRROR: We use this feature to make a twin material which means to the same exact material without drawing again, it is so helpful not to waste time.

 

SWEEP BOSS AND SWEEP CUT: By sweep we create base, boss, cut, or surface by moving a section along a path according to these rules, the profile(section) must be closed for a base or boss sweep feature.

 

 SWEEP BOSS

 

 SWEEP CUT

 

LINEAR PATTER FEATURE: This feature is used to make a multiple shape based on the first created shape, it requires how many numbers of instances, distance between each other and which direction you want.

 

PROJECTED CURVE FEATURE: Here by this feature you can project a curve onto a model face to create a 3D sketch also, a 3D curve can be created by representing the intersection of two extruded surface generated by creating sketches on the two intersecting planes. You can create multiple closed or open contour projected curves from a single sketch. 3D can be used as a projected curve tool and projected curve does not support projections of intersecting curves.

 

LOFT: This feature creates transitions between two or more sketch profile and by creating a loft the sketch profile must reside on different planes.

 

 

SKETCH:

The following are different sketches we use when we are drawing to come up with any desirable shape, there is circle, different type of rectangle, oval, line and more also there is convert entities which help to make intersection between two lines and offset also a trim whim help to cut unwanted lines, we also have smart dimension which helps to give dimensions to the material for it to have any size you want.

 

 

 

REFERNCE GEOMETRY: It defines the shape or a solid of the surface.it has different features like pane, axes, co-ordinate system and point which are used differently depending on what is needed in the sketch.

 

 

 

 

 

 

 

 

 

 

                                                                        

 

 

 

 

 

 

 

 

 

 

 

The following is the summary of how these components are drawn the features used and all the detail about it.

 

 

TRANSMISSION BELT:

It the first component I did which is not complicated to draw it requires only extrude and fillet and the outer look is matte rubber.

KICKSTAND:

Designing kickstand, we use a sketch based on a plane which is used to create a lofted part. Also, we have dome created on both ends of a kickstand. There is extrude cut which is created for assembly and extrude boss to join the cut parts, after all we apply fillet on all edges.

FRONT FENDER:

We revolve the sketch using the axis and slip up and down part of the sketch to get the desired shape and then we apply fillet at edges of fender and it is painted sienna.

REAR FENDER:

Rear fender has no much different than front fender steps are the same even the color is the same the different is the size because it depends on the size of then tire.

OIL TANK:

Here oil tank is sketched on top plane and boss extrude is applied and to come up with the shape of oil tank one more sketch is needed and we apply another boss extrude and we do combine. then a fillet is applied on all edges and a shell to get a hollow. This oil tank is painted sienna and at the edge it is painted white.

CHAIN:

 

A chain is designed by different features, this sketch uses arc and lines and create the front and back link we saved a block diagram and then with the help of pattern we have to complete the whole loop and we minor the face of the links to the pin in the block diagram and it is chromium plate paint.

 

PEDAL:

Here on the front plane, we start a sketch by designing the base of the pedal and boss-extrude the circular holes and extrude pins for the second times, the sketch is revolved to make 3D image and then we apply dome on the surface of the pins after we also apply the fillet on the edges, we apply chamfer on cylindrical part and a circular part is extruded and we use linear pattern according to a number we want and do fillet to have a proper finish, it is chromium plate in color.

FRONT AND REAR WHEEL:

This two are designed in the same way but they differ in size, here on the right plane we sketch a revolved part and a rim is sketched on the right plane and extruded after it is merged with the hubby a help of spline tool. Then we converting entities and mirror the parts, the cut extruded is made and the circular pattern is made at the edges of the rim to make three forks. After here the disc is done on the plane and offsetting to a level and extrude it, then we make the design after we ut extrude to come up with the design. The calipers are sketched on the face of the disc and extruded both sides and chamfered for proper appearance and edges are filleted. After we design the sprocket on the same plane with an extruded cylindrical hub and we apply a pattern on the face of the sprocket with cut extrude. After all we come up with the final design of the wheel, the tire is matte rubber in color, chrome finished sprocket, rim as a chrome finished also, and caliper as a sienna.

FRONT FORK:

 

Here designing a front fork, we design a half of the fork and the we   mirror it along the face to get the full design. We start to design on a right plane by revolving a cylindrical fork then we sketch the face on the top of it and extrude it, also we mirror the part and pattern it so the two cylindrical extrudes to join the upper deck and the mirror of the side of the fork. Next is headlight which is facing down on the top of handle. So, the part is extrude cut from the face of the headlight to make it hallow. Then we fillet all the edges. Another part is handled by swept using two curve and the swept area of the handle grips are made using the revolved features and we draw the geometry on the inner face of the handle bar and extrude them. After all we fillet the edges and we do a projected curve to sweep the wires. The last part we create the plane where we mirror the other side of the fork and combine all the parts to come up with 3D shape.   

CHASSIS:

Designing the chassis, we start by drawing two projected curve to attain at the lower curved part of the block and swept it along the path which is the mirrored to get the geometry. We extrude a sketch from the open end of the base and we create a block and extrude it to attain the desired shape. After, the base of the block is chamfered and fillet is applied also two sweeps are created on both sides and two extrude is made to make to make attachment with sprocket. making the upper rod we create sweep from the front face of the block and the slip tool is created to cut the unwanted parts. Revolve part is created at a front past which will join front fork and chassis also to make attachment with pedal and kickstand two geometry are created extruded and extruded out for the unwanted parts. After fillet is applied to the edges and the chassis is painted sienna. 

ENGINE:

This is the engine part of the American chopper which is sketched on the front plane and the base of the motor is designed and extruded with more than one bosses which is created on the same sketch also the upper curved part is extruded and the fillet is applied to all edges. Two revolved features are made on rear side to make arrangement for transmission belt. we extrude the spokes and linear pattern around the circular region and the same steps used to another side and the then extrude cut is done on the front of the cylindrical for proper shape. The top of case and the back of the case is sketched and extruded one after the other and emerged with entire body part. the body is cut from the engine to make fin which is patterned in a required number. The chamfer and the fillet are used also a sketch is made at the top and the spark plug is created and engine is mirrored for the second cylinder. for the chain link we make front gear using extrude and cutting of the edges and for assembly the base hub and four stand are made and also the link is swept between both engines. At last exhaust pipe are created from the engine and two projected curves are created and joined together to form a composite curve which is swept from the face of engine to the back and the process is applied to the second pipe after all the wires are attached to the spark plug with two sweeps applied. It is painted in chromium plate.

GAS TANK:

We start with additional reference plane and make a sketch on it which is swept to attain the basic layout of the gas tank, the edge is trimmed to have the design of the tank one more plane is added and a surface loft is made as the front face of the tank and with boundary sweep feature, we join together the front face and the side face with the rear of gas tank and to get the desired part we mirror the entire part and knitting them together. After we create the seat by extruding the surface and filleting the edges of the seat so with surface loft and knitting tools, we give covering to the bottom of the gas tank and a sketch is created at the face of the gas tank u section for assembly of the tank with chassis and fillet is applied to all edges and a shell created at the end to make it hallow.

ASSEMBLY:

After we design everything, we have to do assembly for all parts, we start with chassis and we use its plane and geometry for the entire assembly, the second is engine, the base stand of the engine is matted coincident with the base of the chassis then the planes the engines are mated so it is fixed it does not move, thirdly we bring pedal which has pins which are mated with holes in the chassis and a coincident mate is made to make the part fixed and we mirror the pedal to have it on another side of chassis, then we bring the kickstand where the mate made is concentric with the hole created in the chassis. The next is transmission belt which is mate with the on the engine drivers and it provide an angle to make the joint coincident with the drivers, we bring oil tank which is directly matted and placed above the engine, next is rear wheel which is matted with chassis and the hub of the wheel the planes are mated accordingly and parallel mate is applied to fully define sketch, the rear fender is applied above rear wheel, the chain wheel is brought to start a width mate between the chain link parts and sprockets of the rear wheel and engine, next is gas tank which is fixed with distance mate and parallel mate with respect to the chassis, the front fork is made coincidently with upper part of chassis. Finally front wheel is applied attached with front fork as the same as rear wheel and fender is placed above the front wheel.

MATE:

 

 Mates create relationship between the assembly components, we have concentric which force two cylindrical component to become concentric and coincident which forces two planar forces to become coplanar and mates are solved at the same time it doesn’t matter how you add them also you can suppress mates.

RENDERING:

So rendering is the last step to make the bike look realistic. Here we try all the means to make it looks much good, we give it camera view setting desired lights and different background to see which is the best, changing the brightness, shadow density, gamma levels depending to the background changings and also changing of colors to see which is the best until we are satisfied.

 

                                                                                                          BY FIONA MUNEZERO