Challenge 6 : Concept Modeling of Side Fender
Title of the Project : CONCEPTE MODELLING OF CAR DEFENDER
Objective : To create surface model of Side Fender using Autodesk Alias Design.
Design methodology / approach :
A design approach for modelling this bumper Part has been briefly explained below using flow chart
PROCEDURE:
Description:
Step 1: Import the canvas image of Side view of Fender.
Step 2:Visualise the surfaces using the picture given identiy the primary surfaces to be build first.
Step 3: Build the surfaces using Rail, Square, Skin command.
Step 4: Surfaces made in patches should follow the G2 continuity so that they look smooth and continous,Align using G2 continuity.
Step 5: Start making transition surfaces using the Rail, Square, Skin command.
Step 6: Surfaces which are to be trimmed should have G0 continuity so that surface fillet can be applied.
Step 7: Apply Surface Fillet for smooth transition between diffrent surfaces and removing sharp edges from model.
Commands Used duing building surface model:
Features used :
1. Import canvas images
Using import option we can insert 2D images as canvas images for modelling the Abarth 500 car bumper.
2. Marking menus
Marking menus had three forms picking tools, tranforming tools & information tools. It is more effective while modelling.
Picking tools
Using shift+ctrl+left mouse button we can use below picking tools.
- Pick object
- Pick cv
- Pick curves
- Pick surface
- Pick curve on surface
- Pick blend point
- Pick edit point
- Pick nothing
3.Transforming tools
Using shift+ctrl+middle mouse button we can use below transforming tools.
- Move
- Move pivot
- Scale
- Rotate
- Delete Locators
- Query edit histroy
4. Information tools
Using shift+ctrl+right mouse button we can use below Information tools.
- Information windows
- Toggle model
- Toggle grid
- Control on/off
- Plane editor
- Shade
5.Curves tools
In curves, CV curves is important tool on alias. Here we used this tool for curve network of concept car. Also we used blend, circle, key point curve tools on required area to achieve entire curve network.
6.Surfaces tools
We learned how to create surfaces on curve network using Skin, Rail, Square and also Surface fillet.
Skin:
If we have only two curve lines we can easily able to create surface using Skin surface tool. We can also use 3 curve line to create surface holding shift key and select curve.Also toggle to change the bend of surface by selecting the centerline curve and move the curve line.
Rail:
To create surface using rail we need two curve line one as generation and other as rail curve. We can also use two lines as generation curve & 2 lines as rail curve to create surface.
Square:
We can create surface, if we have 4 curve lines meeting each other. It create surface like patches.
Surface fillet:
Surface fillet will create surface like L shape. We can create surface fillet by selecting srfillet and selecting two surface as primary and secondary surfaces.if we want to change use option like G2 curvature to form edge less surface as tertiary suraface.
7.Surface Edit:
We learned how to use surface edit tools to get required shape of the surface.Using Project tool we can project a curve on surface and trim unwanted surface to get desired shape of surface.
We learned below tools on surface edit.
- Project
- Intersect
- Trim/Untrim
8.Interactive shading
Interactive shading use your system graphics to draw surface. There are two types: Hardware shade, Diagnostic shade.
FRONT VIEW:
SIDE VIEW:
TOP VIEW :
ISOMETRIC VIEW :
Conclusion:
In this assignment we made the Surface Model of Side Fender.First we visualize the image then identify the surfaces which are to be build first. Primary surfaces are made with smooth G2 continuity then transition surfaces are made.
After making the sharp surface model we apply surface fillet to convert sharp edges to smooth edges.We merge the surfaces using the blend where more than two surfaces combine to from a single smooth surface.So by following this method we built Side Fender.