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- W2891501097 abstract "Abstract The development of solid modeling to represent the geometry of designed parts and the development of parametric modeling to control the size and shape have had significant impacts on the efficiency and speed of the design process. Designers now rely on parametric solid modeling, but surprisingly often are frustrated by a problem that unpredictably causes their sketches to become twisted and contorted. This problem, known as the “multiple solution problem” occurs because the dimensions and geometric constraints yield a set of non-linear equations with many roots. This situation occurs because the dimensioning and geometric constraint information given in a CAD model is not sufficient to unambiguously and flexibly specify which configuration the user desires. This paper first establishes that only explicit, independent solution selection declarations can provide a flexible mechanism that is sufficient for all situations of solution selection. The paper then describes the systematic derivation of a set of “solution selector” types by considering the occurrences of multiple solutions in combinations of mutually constrained geometric entities. The result is a set of eleven basic solution selector types and two derived types that incorporate topological information. In particular, one derived type “concave/convex” is user-oriented and thought to be very useful." @default.
- W2891501097 created "2018-09-27" @default.
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- W2891501097 date "2001-09-09" @default.
- W2891501097 modified "2023-09-26" @default.
- W2891501097 title "Solution Selectors: A User-Oriented Answer to the Geometric Constraint Multiple Solution Problem" @default.
- W2891501097 doi "https://doi.org/10.1115/detc2001/dac-21029" @default.
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