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Abstract:
To
distinguish the small features from the large ones is the key technology
of geometric simplification, which is one of the major subtasks under
abstraction of model for FEA. Filleting radius, which is called
filletization, has the effect of low-pass filtering to geometric shape.
The locality of boundary entities can be evaluated by comparing the
original model with the filleted model. The principle to quantify the
detail – level of boundary geometric entities based on filletization is
described in detail and an approach to decompose geometric object into
detail features is developed. In the cycle of detailed boundary entitles
recognition and detail feature decomposition, an arbitrary solid model
which is represented as B – Rep model can be simplified to any level.
The method proposed in this paper can be used as an efficient tool of
abstracting geometric model for analysis from CAD model.
Key words:
Detail
removal Feature recognition/decomposition Analysis
automation
CLC No: TP391.7
Received
20000809, received in revised form 20010410
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