On the Right Parameterization of 3D Models - Case Study

Abstract:

All students in mechanical engineering courses receive training in using at least one parametric and associative 3D modeler. From the point of view of the logic behind the geometric design, a very important issue is how to parameterize the model, or put in other words, how to achieve the right balance between dimensions, as independent parameters, formulas (linking dimensions) and geometric constraints (parallel, concentric, horizontal etc.). We arrive following this logic to the notion of degrees of freedom of the model, as expressing the number of dimensions still free for a dynamic edit. The papers aim is to provide a case study capable to assist students in understanding how a good model could be built. The case study will be integrated in an on-line course, offered by our university as an expression of its commitment in developing e-learning applications [.The paper proposes a slightly different approach, compared with the ones presented in [2, 3, . While in the mentioned sources a graph approach is considered, our paper proposes a matrix oriented analysis, coupled with a live analysis of the model behavior. The paper also proposes different other models as good examples to be used in the teaching process.

• Periodical: Applied Mechanics and Materials (Volume 657)
• Pages: 715-719
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.657.715
• Online since: October 2014
• Authors: Ionuţ Lambrescu*, Ion Pană
• Keywords: Degrees of Freedom of 3D Models, Parameterization, Teaching Models

References

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