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FEAsy @ Purdue - Finite Element Analysis made Easy

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Uploaded on Sep 1, 2009

https://engineering.purdue.edu/PRECIS...

FEAsy:A Sketch-based Interface Integrating Structural Analysis In Early Design
ABSTRACT
The potential advantages of freehand sketches have been
widely recognized and exploited in many fields especially in
engineering design and analysis. This is mainly because the
freehand sketches are an efficient and natural way for users to
visually communicate ideas. However, due to a lack of
fundamental techniques for understanding them, sketch-based
interfaces have not yet evolved as the preferred computing
platform over traditional menu-based tools. In this paper, we
address the specific challenge of transforming informal and
ambiguous freehand inputs to more formalized and structured
representations. We present a domain- independent, multistroke,
multi- primitive beautification method which detects
and uses the spatial relationships implied in the sketches.
Spatial relationships are represented as geometric constraints
and satisfied by a geometric constraint solver. To demonstrate
the utility of this technique and also to build a natural working
environment for structural analysis in early design, we have
developed FEAsy (acronym for Finite Element Analysis made
easy) as shown in Fig. 1. This tool allows the users to
transform, simulate and analyze their finite element models
quickly and easily through freehand sketching, just as they
would draw on paper. Further, we have also developed simple,
domain specific rules-based algorithms for recognizing the
commonly used symbols and for understanding the different
contexts in finite element modeling. Finally, we illustrate the
proposed approach with a few examples.

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