On the effects of the fix geometric constraint in 2D profiles on the reusability of parametric 3D CAD models
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Altres documents de l'autoria: González-Lluch, Carmen; Company, Pedro; Contero, Manuel; Pérez López, David; Dorribo Camba, Jorge
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comunitat-uji-handle2:10234/43662
comunitat-uji-handle3:10234/43643
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On the effects of the fix geometric constraint in 2D profiles on the reusability of parametric 3D CAD modelsAutoria
Data de publicació
2018-06Editor
Springer-VerlagCita bibliogràfica
GONZÁLEZ-LLUCH, Carmen, et al. On the effects of the fix geometric constraint in 2D profiles on the reusability of parametric 3D CAD models. International Journal of Technology and Design Education, 2018, 1-21.Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
https://link.springer.com/article/10.1007/s10798-018-9458-zVersió
info:eu-repo/semantics/acceptedVersionParaules clau / Matèries
Resum
In order to be reusable, history-based feature-based parametric CAD models must reliably allow for modifications while maintaining their original design intent. In this paper, we demonstrate that relations that fix ... [+]
In order to be reusable, history-based feature-based parametric CAD models must reliably allow for modifications while maintaining their original design intent. In this paper, we demonstrate that relations that fix the location of geometric entities relative to the reference system produce inflexible profiles that reduce model reusability. We present the results of an experiment where novice students and expert CAD users performed a series of modifications in different versions of the same 2D profile, each defined with an increasingly higher number of fix geometric constraints. Results show that the amount of fix constraints in a 2D profile correlates with the time required to complete reusability tasks, i.e., the higher the number of fix constraints in a 2D profile, the less flexible and adaptable the profile becomes to changes. In addition, a pilot software tool to automatically track this type of constraints was developed and tested. Results suggest that the detection of fix constraint overuse may result in a new metric to assess poor quality models with low reusability. The tool provides immediate feedback for preventing high semantic level quality errors, and assistance to CAD users. Finally, suggestions are introduced on how to convert fix constraints in 2D profiles into a negative metric of 3D model quality. [-]
Proyecto de investigación
Universitat Jaume I (UJI-A02017-15) ; MINECO/AEI/FEDER, UE (DPI2017-84526- R) ; project CAL-MBEDrets d'accés
© Springer Nature B.V. 2018
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info:eu-repo/semantics/openAccess
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