{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,25]],"date-time":"2026-03-25T10:15:54Z","timestamp":1774433754905,"version":"3.50.1"},"reference-count":0,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2001,2,1]],"date-time":"2001-02-01T00:00:00Z","timestamp":980985600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2001,2,1]],"date-time":"2001-02-01T00:00:00Z","timestamp":980985600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Earthquake Spectra"],"published-print":{"date-parts":[[2001,2]]},"abstract":"<jats:p>Direct displacement\u2010based design requires a simplified procedure to estimate the seismic deformation of an inelastic SDF system, representing the first (elastic) mode of vibration of the structure. This step is usually accomplished by analysis of an \u201cequivalent\u201d linear system using elastic design spectra. In this paper, an equally simple procedure is developed that is based on the well\u2010known concepts of inelastic design spectra. We demonstrate that the procedure provides the following: (1) accurate values of displacement and ductility demands, and (2) a structural design that satisfies the design criteria for allowable plastic rotation. In contrast, the existing procedure using elastic design spectra for equivalent linear systems in shown to underestimate significantly the displacement and ductility demands. The existing procedure is shown to be deficient in yet another sense; the acceptable value of the plastic rotation, leaving an erroneous impression that the allowable plastic rotation constraint has been satisfied.<\/jats:p>","DOI":"10.1193\/1.1586166","type":"journal-article","created":{"date-parts":[[2003,7,31]],"date-time":"2003-07-31T11:11:39Z","timestamp":1059649899000},"page":"47-64","source":"Crossref","is-referenced-by-count":160,"title":["Direct Displacement\u2010Based Design: Use of Inelastic vs. Elastic Design Spectra"],"prefix":"10.1002","volume":"17","author":[{"given":"Anil K.","family":"Chopra","sequence":"first","affiliation":[{"name":"Department of Civil &amp; Environmental Engineering University of California Berkeley CA 94720\u20101710"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rakesh K.","family":"Goel","sequence":"additional","affiliation":[{"name":"Department of Civil &amp; Environmental Engineering California Polytechnic State University San Luis Obispo CA 93407"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2001,2]]},"container-title":["Earthquake Spectra"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1193\/1.1586166","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1193\/1.1586166","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,1,25]],"date-time":"2026-01-25T12:28:47Z","timestamp":1769344127000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1193\/1.1586166"},"secondary":[{"URL":"https:\/\/pubs.geoscienceworld.org\/earthquake-spectra\/article\/17\/1\/47\/584787\/direct-displacementbased-design-use-of-inelastic","label":"geoscienceworld"}]},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2001,2]]},"references-count":0,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2001,2]]}},"alternative-id":["10.1193\/1.1586166"],"URL":"https:\/\/doi.org\/10.1193\/1.1586166","archive":["Portico"],"relation":{},"ISSN":["8755-2930","1944-8201"],"issn-type":[{"value":"8755-2930","type":"print"},{"value":"1944-8201","type":"electronic"}],"subject":[],"published":{"date-parts":[[2001,2]]}}}