{"_buckets": {"deposit": "8e47e32b-a3f8-43c5-aa14-c8c582c0ec93"}, "_deposit": {"id": "2007399", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "2007399"}, "status": "published"}, "_oai": {"id": "oai:u-ryukyu.repo.nii.ac.jp:02007399", "sets": ["1642837725634", "1642838406845"]}, "author_link": [], "item_1617186331708": {"attribute_name": "Title", "attribute_value_mlt": [{"subitem_1551255647225": "APPLICATION OF DISCRETE VARIATIONAL TECHNIQUES TO THE ANALYSIS OF LATTICED SHELLS", "subitem_1551255648112": "en"}]}, "item_1617186419668": {"attribute_name": "Creator", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Oshiro, Takeshi", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "\u5927\u57ce, \u6b66", "creatorNameLang": "ja"}]}]}, "item_1617186476635": {"attribute_name": "Access Rights", "attribute_value_mlt": [{"subitem_1522299639480": "open access", "subitem_1600958577026": "http://purl.org/coar/access_right/c_abf2"}]}, "item_1617186626617": {"attribute_name": "Description", "attribute_value_mlt": [{"subitem_description": "The techniques of discrete field mechanics, a new concept in structural analysis, are used in conjunction with energy methods to obtain an exact mathematical model to represent a latticed shell subjected to flexure and corresponding solutions. The method developed is designated here as the discrete variational approach and its usefulness has proven especially effective for the analysis of latticed shells with general types of boundary supports, such as free or ribbed polygonal edges. Essentially, the method is based on the application of the calculus of variations in discrete  field mechanics developed in Appendix A to the concept of the Micro Approach used in field analysis. The immediate results are: (a) The mathematical model which can be used for the linear or non-linear analysis of latticed  structures (b) A clear statement of the natural boundary conditions associated with each system (c) Closed form solutions to the total model described by the steps (a) and (b) A further development of the method, the modified discrete variational method analogous to the method of Lagrange multipliers, is presented in the same appendix and enables one to obtain with relative ease closed form solutions to structures which were not amenable by conventional methods because of the complexity of the boundary conditions. Such solutions are valid over the entire structure and are independent of the size of the system. The buckling condition of latticed shells is also investigated by this method in the work presented in Chapter IV which clarifies on a rational basis the behavior of the compressed members as an integral part of the entire system. Each solution presented in this paper has been investigated numerically and compared with results obtained by open form methods. The comparison shows significant accuracy and the great reliability of the technique proposed here.", "subitem_description_type": "Other"}, {"subitem_description": "\u7d00\u8981\u8ad6\u6587", "subitem_description_type": "Other"}]}, "item_1617186643794": {"attribute_name": "Publisher", "attribute_value_mlt": [{"subitem_1522300295150": "ja", "subitem_1522300316516": "\u7409\u7403\u5927\u5b66\u7406\u5de5\u5b66\u90e8"}, {"subitem_1522300295150": "en", "subitem_1522300316516": "Science and Engineering Division, University of the Ryukyus"}]}, "item_1617186702042": {"attribute_name": "Language", "attribute_value_mlt": [{"subitem_1551255818386": "eng"}]}, "item_1617186783814": {"attribute_name": "Identifier", "attribute_value_mlt": [{"subitem_identifier_type": "HDL", "subitem_identifier_uri": "http://hdl.handle.net/20.500.12000/26296"}]}, "item_1617186920753": {"attribute_name": "Source Identifier", "attribute_value_mlt": [{"subitem_1522646500366": "ISSN", "subitem_1522646572813": "0387-429X"}, {"subitem_1522646500366": "NCID", "subitem_1522646572813": "AN00250785"}]}, "item_1617186941041": {"attribute_name": "Source Title", "attribute_value_mlt": [{"subitem_1522650068558": "ja", "subitem_1522650091861": "\u7409\u7403\u5927\u5b66\u7406\u5de5\u5b66\u90e8\u7d00\u8981. \u5de5\u5b66\u7bc7"}, {"subitem_1522650068558": "en", "subitem_1522650091861": "Bulletin of Science \u0026 Engineering Division, University of the Ryukyus. 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