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This 3D model was created using CAD, and is based on an alpine ski designed by ski manufacturer Endre Hals.
From CAD to HTML
This 3D model is powered by x3dom, which uses X3D data embedded in HTML/XHTML pages. X3D is a data format used for representing 3D computer graphics, and is the successor of Virtual Reality Modeling Language (VRML).
The model was made using CAD and imported to an VRML-file. Converting from VRML to X3D is done without loss of quality, the same is for converting from X3D to HTML. Thus the created model is essentially the same 3D model on this page.
Purpose
The model was created for isogeometric analysis (IGA) and simulating flex curves. We were asked to try and predict the flex curves of the ski before it is produced. The main point of using IGA is that you get exact geometry with what you are analyzing, as opposed to finite element method (FEM) where you run into problems with models with curves.
Core
The core is a piece of laminated wood with poplar in the center to save weight
and ash at the edges for strength. Endre has cut glued the core in such a way that the
properties and faults in the wood will be symmetrical along the ski.
Composite
The composites that encase the wooden core are either fiberglass or carbon
fiber. This layer gives the skies their torsional strength.
Other
The base is the contact point between the ski and the snow and protects the core
from water and damage at the same time that it provides less friction.
At the edges their will be installed steel band to increase the carving capabilities
and make the skies last longer.
All these materials are then glued together with epoxy to make a very complex cross-section