Informationally-complete product models of complex arrangements for simulation-based engineering: Modelling design constraints using virtual solids

Sapidis, NS; Theodosiou, G

dc.contributor.author	Sapidis, NS	en
dc.contributor.author	Theodosiou, G	en
dc.date.accessioned	2014-03-01T01:15:39Z
dc.date.available	2014-03-01T01:15:39Z
dc.date.issued	2000	en
dc.identifier.issn	0177-0667	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13652
dc.subject	design validation	en
dc.subject	free-space modelling	en
dc.subject	plant layout	en
dc.subject	virtual reality	en
dc.subject.classification	Computer Science, Interdisciplinary Applications	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	LAYOUT	en
dc.subject.other	PLANT	en
dc.title	Informationally-complete product models of complex arrangements for simulation-based engineering: Modelling design constraints using virtual solids	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/PL00013713	en
heal.identifier.secondary	http://dx.doi.org/10.1007/PL00013713	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	Complex mechanical arrangements involve a large number of constraints referring to either properties of individual components (of the arrangement) or relationships between components. Current practices approximate these constraints with simplified 'dimensional constraints' aiming at formulating a system of (in)equalities to be solved automatically by a 'geometric constraint solver'. This paper identifies limitations in this approach, lending to inaccurate descriptions of problems that disallow development of a collaborative engineering environment. Our work focuses on complex plants and their conformity with operational constraints for performing. e.g. maintenance, repair and emergency operations. Current Virtual Reality techniques cannot solve this problem as, at best, they only significantly enhance visual perception of 3D plant models. A detailed analysis of required 'free-spaces' is presented on the basis of industrial data. The concept of 'virtual solid' is proposed for modeling free-spaces and related geometric modelling techniques are derived. An 'extended product model' is presented, also accommodating nongeometric properties of free-spaces, and thus leading to informationally-complete descriptions of plant-layout problems. Finally, an implementation in the AutoCAD environment is presented accompanied by realistic examples.	en
heal.publisher	SPRINGER-VERLAG	en
heal.journalName	ENGINEERING WITH COMPUTERS	en
dc.identifier.doi	10.1007/PL00013713	en
dc.identifier.isi	ISI:000168951700002	en
dc.identifier.volume	16	en
dc.identifier.issue	3-4	en
dc.identifier.spage	147	en
dc.identifier.epage	161	en