{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,3]],"date-time":"2026-02-03T16:09:06Z","timestamp":1770134946006,"version":"3.49.0"},"reference-count":14,"publisher":"ASME International","issue":"4","content-domain":{"domain":["asmedigitalcollection.asme.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2004,12,1]]},"abstract":"<jats:p>ISO 10303 (STEP) is a standard for the electronic exchange of product life-cycle data. It has been continually expanded by the addition of new capabilities since its first release by ISO in 1994. Until now, the standard has not been capable of exchanging models with parameterization and constraints such as those commonly generated by modern CAD systems. This makes it difficult to modify a model for any purpose following an exchange. However, new STEP resources have been developed to rectify this situation, and the paper reports on the the first of them to reach International Standard status. It provides the capability to associate explicitly represented parameterization and constraint information with CAD models. The primary application areas are in the 2D profiles or sketches that are inherent in many CAD model constructional procedures, in the positioning and orientation of features in 3D models and in the positioning and orientation of assembly components. Other complementary new STEP resources are briefly discussed at the end of the paper.<\/jats:p>","DOI":"10.1115\/1.1814383","type":"journal-article","created":{"date-parts":[[2005,1,4]],"date-time":"2005-01-04T23:00:41Z","timestamp":1104879641000},"page":"339-351","update-policy":"https:\/\/doi.org\/10.1115\/crossmarkpolicy-asme","source":"Crossref","is-referenced-by-count":8,"title":["A New ISO 10303 (STEP) Resource for Modeling Parameterization and Constraints"],"prefix":"10.1115","volume":"4","author":[{"given":"Michael J.","family":"Pratt","sequence":"first","affiliation":[{"name":"LMR Systems, 21 High Street, Carlton, Bedford, MK43\u20097LA, UK"}]}],"member":"33","published-online":{"date-parts":[[2005,1,4]]},"reference":[{"key":"2019100409245465900_R1","unstructured":"Owen, J., 1997, STEP: An Introduction, 2nd ed., Information Geometers, Winchester, UK."},{"key":"2019100409245465900_R2","doi-asserted-by":"crossref","unstructured":"Pratt, M. J.\n          , 2001, \u201cIntroduction to ISO 10303\u2014The STEP Standard for Product Data Exchange,\u201d ASME J. Comput. Inf. Syst. Eng., 1, No. 1, pp. 102\u2013103.","DOI":"10.1115\/1.1354995"},{"key":"2019100409245465900_R3","unstructured":"ISO, 2004, \u201cIndustrial automation systems and integration\u2014Product data representation and exchange\u2014Part 108: Integrated application resource: Parameterization and constraints for explicit geometric product models,\u201d International Standard ISO 10303-108, International Organization for Standardization, Geneva."},{"key":"2019100409245465900_R4","unstructured":"ISO, 1994, \u201cIndustrial automation systems and integration\u2014Product data representation and exchange\u2014Part 11: Description methods: The EXPRESS language reference manual,\u201d International Standard ISO 10303-11, International Organization for Standardization, Geneva."},{"key":"2019100409245465900_R5","unstructured":"ISO, 2000, \u201cIndustrial automation systems and integration\u2014Product data representation and exchange\u2014Part 43: Integrated generic resource: Representation structures,\u201d International Standard 10303-43, International Organization for Standardization, Geneva."},{"key":"2019100409245465900_R6","unstructured":"ISO, 2000, \u201cIndustrial automation systems and integration\u2014Product data representation and exchange\u2014Part 42: Integrated generic resource: Geometric and topological representation,\u201d International Standard 10303-42, International Organization for Standardization, Geneva."},{"key":"2019100409245465900_R7","unstructured":"ISO, 1994, \u201cIndustrial automation systems and integration\u2014Product data representation and exchange\u2014Part 21: Implementation methods: Clear text encoding of the exchange structure,\u201d International Standard 10303-21, International Organization for Standardization, Geneva."},{"key":"2019100409245465900_R8","unstructured":"ISO, 2002, \u201cIndustrial automation systems and integration\u2014Product data representation and exchange\u2014Part 50: Integrated generic resource: Mathematical constructs,\u201d International Standard 10303-50, International Organization for Standardization, Geneva."},{"key":"2019100409245465900_R9","unstructured":"ISO, 2004, \u201cIndustrial automation systems and integration\u2014Product data representation and exchange\u2014Part 55: Integrated generic resource: Procedural and hybrid representation,\u201d International Standard ISO 10303-55, International Organization for Standardization, Geneva."},{"key":"2019100409245465900_R10","doi-asserted-by":"crossref","unstructured":"Bettig, B., and Shah, J. J., 2000, \u201cDerivation of a Standard set of Geometric Constraints for Parametric Modeling and Data Exchange,\u201d Comput.-Aided Des., 33, No. 1, pp. 17\u201333.","DOI":"10.1016\/S0010-4485(00)00058-0"},{"key":"2019100409245465900_R11","doi-asserted-by":"crossref","unstructured":"Pratt, M. J.\n          , 2001, \u201cExtension of the STEP Standard for Parametric CAD Models,\u201d ASME J. Comput. Inf. Syst. Eng., 1, No. 3, pp. 269\u2013275.","DOI":"10.1115\/1.1419196"},{"key":"2019100409245465900_R12","unstructured":"Pratt, M. J., 2002, \u201cParametric STEP for Concurrent Engineering,\u201d in Advances in Concurrent Engineering (Proc. 9th ISPE International Conference on Concurrent Engineering, Cranfield, UK, July 2002) R. Gonc\u00b8alves, R. Roy, and A. Steiger-Garc\u00b8a\u02dco eds., Balkema Publishers, Lisse, Netherlands, pp. 933\u2013940."},{"key":"2019100409245465900_R13","unstructured":"Stiteler, M., 2004, \u201cC_onstruction H_istory And P_arametricS_: Improving Affordability through Intelligent CAD Data Exchange,\u201d CHAPS Program Final Report, Advanced Technology Institute, 5300 International Boulevard, North Charleston, SC 29418, USA."},{"key":"2019100409245465900_R14","doi-asserted-by":"crossref","unstructured":"Pratt, M. J., Anderson, W. D., and Ranger, T., 2004, \u201cTowards the Standardized Exchange of Parameterized Feature-based CAD Models,\u201d in press, Computer Aided Design.","DOI":"10.1016\/j.cad.2004.12.005"}],"container-title":["Journal of Computing and Information Science in Engineering"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/asmedigitalcollection.asme.org\/computingengineering\/article-pdf\/4\/4\/339\/5773614\/339_1.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"http:\/\/asmedigitalcollection.asme.org\/computingengineering\/article-pdf\/4\/4\/339\/5773614\/339_1.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,10,4]],"date-time":"2019-10-04T13:25:05Z","timestamp":1570195505000},"score":1,"resource":{"primary":{"URL":"https:\/\/asmedigitalcollection.asme.org\/computingengineering\/article\/4\/4\/339\/462847\/A-New-ISO-10303-STEP-Resource-for-Modeling"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2004,12,1]]},"references-count":14,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2004,12,1]]}},"URL":"https:\/\/doi.org\/10.1115\/1.1814383","relation":{},"ISSN":["1530-9827","1944-7078"],"issn-type":[{"value":"1530-9827","type":"print"},{"value":"1944-7078","type":"electronic"}],"subject":[],"published":{"date-parts":[[2004,12,1]]}}}