B-rep (Boundary Representation)
The dominant geometric representation in CAD since the 1980s. B-rep defines shapes through explicit surfaces and edges, stored as data structures representing the boundary of an object.
Why it matters
B-rep is intuitive for designers and works well for traditional manufacturing. However, it struggles with internal structures and complex topology optimization.
Related concepts
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Cite this definition
Finocchiaro, Michael. “B-rep (Boundary Representation).” DemystifyingPLM PLM Glossary, 2026, https://www.demystifyingplm.com/glossary/b-rep-boundary-representation