Abstract:
In allusion to the deficient feature of product information in
conceptual design, a framework of deficient information modeling
for conceptual shape design is put forward, which includes
qualitative shape modeling (a qualitative solid model),
uncertain shape modeling (an uncertain relation model) and
imprecise
shape modeling (an imprecise region model). In the framework,
the qualitative solid model is the core, which represents
qualitatively (using symbols) the conceptual shapes of
mechanical products. The uncertain relation model regarding
domain relations as objects and the imprecise region model
regarding domains as objects are used to deal with the uncertain
and imprecise issues respectively, which arise from qualitative
shape modeling or exist in product information itself.
Key words:
Conceptual shape design Qualitative solid model Spatial
cognition
* This project is supported by
National Natural Science Foundation of China (No.59990470). Received
December 12, 2000; received in revised form August 14, 2001; accepted
September 20, 2001.
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