NURBS-Based Variational Modeling as a Tool for the Analysis of Geometric Tolerances
نویسندگان
چکیده
The purpose of this research is to investigate a computer-aided approach to tolerance analysis for assemblies and mechanisms. A CAD system which can generate NURBS surfaces is used to produce imperfect-form, variant models. A method is developed for simulating the mating of these imperfect-form components by formulating surface mating relationships as a nonlinear programming problem. Using this approach, tolerance analysis can be performed by generating a series of typical component variants, simulating the positioning of these imperfect-form components then measuring geometric attributes of the assembly or mechanism which correspond to functionality.
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