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A rather extensive treatment of the stresses in fuselage main bulkheads is given in NACA Technical Report No. 509. The Least work equations developed in the report are for the most general case. The examples given are for concentrated loads, which are in balance, and applied. at various points on a circular bulkhead.
\r\n\r\nNow the shear loads which are transmitted by the skin and stiffeners to a main ring exist in the form of a distributed load which varies around the bulkhead.
\r\n\r\nThe purpose of\u00b7 this paper is to present an analysis pf a main bulkhead in which the wing reactions a.re balanced by a varying distributed load around the bulkhead. The shear distribution although not exact because of the interaction of skin and stiffeners, seems however, closer to the actual existing conditions than would be a case in which the shear loads are treated as concentrated loads.
\r\n\r\nTo somewhat simplify the energy equations the bending and torsional shears were treated separately, the work due to the shear and axial load deformations were also neglected. The error introduced is relatively small.
\r\n\r\nIn the particular airplane to which this solution was applied 80% of the fuselage cross section area consisted of skin and the remaining 20% consisted of stiffeners. Hence the shear transferred by the skin is of major importance.
\r\n\r\nThe case chosen as an illustrative example is an unsymmetrical condition since this is the most general case.
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I certify that the version I submitted here is the same as that approved by my advisory committee.\n\nI hereby grant to California Institute of Technology or its agents the non-exclusive license to archive and make accessible, under the conditions specified under \"Thesis Availability\" in this submission, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation, or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.", "pub_year": "1936", "author_list": "Dunn, Louis Gerhardus" }, { "id": "/id/eprint/1617", "eprint_id": 1617, "rev_number": 15, "documents": [ { "id": "/id/document/2543", "doc_id": 2543, "rev_number": 2, "files": [ { "id": "/id/file/15659", "fileid": 15659, "datasetid": "document", "objectid": 2543, "filename": "Kiesling_l_1924.pdf", "mime_type": "application/pdf", "filesize": 4744917, "mtime": "2012-12-26 02:39:58", "url": "/1617/1/Kiesling_l_1924.pdf" } ], "eprint_id": 1617, "pos": 1, "mime_type": "application/pdf", "format": "application/pdf", "format_desc": "Kiesling_l_1924.pdf", "language": "en", "security": "public", "license": "other", "main": "Kiesling_l_1924.pdf", "media_duration": "0", "media_aspect_ratio": "0", "media_sample_start": "0", "media_sample_stop": "0", "content": "final", "relation": { "items": [ { "type": "http://eprints.org/relation/hasVolatileVersion", "uri": "/id/document/19283" }, { "type": "http://eprints.org/relation/haspreviewThumbnailVersion", "uri": "/id/document/19283" }, { "type": "http://eprints.org/relation/hasVersion", "uri": "/id/document/19283" } ] } }, { "id": "/id/document/19283", "doc_id": 19283, "rev_number": 2, "files": [ { "id": "/id/file/15657", "fileid": 15657, "datasetid": "document", "objectid": 19283, "filename": "preview.png", "mime_type": "image/png", "hash": "2dde596f43aee935795182b9a2559f6a", "hash_type": "MD5", "filesize": 7791, "mtime": "2012-12-26 02:39:58", "url": "/1617/2/preview.png" } ], "eprint_id": 1617, "pos": 2, "placement": 2, "mime_type": "image/png", "format": "image/png", "language": "en", "security": "public", "license": "other", "main": "preview.png", "media_duration": "0", "media_aspect_ratio": "0", "media_sample_start": "0", "media_sample_stop": "0", "relation": { "items": [ { "type": "http://eprints.org/relation/isVolatileVersionOf", "uri": "/id/document/2543" }, { "type": "http://eprints.org/relation/ispreviewThumbnailVersionOf", "uri": "/id/document/2543" }, { "type": "http://eprints.org/relation/isVersionOf", "uri": "/id/document/2543" } ] } } ], "eprint_status": "archive", "userid": 2, "dir": "disk0/00/00/16/17", "datestamp": "2004-05-07", "lastmod": "2019-10-03 23:09:55", "status_changed": "2009-09-25 02:10:05", "type": "thesis", "metadata_visibility": "show", "creators": { "items": [ { "id": "Kiesling-Louis", "name": { "family": "Kiesling", "given": "Louis" }, "show_email": "NO" } ] }, "title": "The Sail-Plane", "ispublished": "unpub", "full_text_status": "public", "keywords": "Engineering and Economics ; Aeronautics", "abstract": "No Abstract.", "date": "1924", "date_type": "degree", "id_number": "CaltechETD:etd-05052004-132633", "refereed": "FALSE", "official_url": "https://resolver.caltech.edu/CaltechETD:etd-05052004-132633", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "collection": "CaltechTHESIS", "reviewer": "Kathy Johnson", "local_group": { "items": [ "GALCIT" ] }, "deposited_by": "Imported from ETD-db", "deposited_on": "2004-05-07", "doi": "10.7907/YB5X-9C87", "divisions": { "items": [ "div_eng" ] }, "institution": "California Institute of Technology", "thesis_type": "bachelors", "thesis_advisor": { "items": [ { "id": "Merrill-A-A", "name": { "family": "Merrill", "given": "Albert Adams" }, "role": "advisor" } ] }, "thesis_committee": { "items": [ { "name": { "family": "None", "given": "None" } } ] }, "thesis_degree": "BS", "thesis_degree_grantor": "California Institute of Technology", "thesis_submitted_date": "2004-05-05", "thesis_defense_date": "1924-01-01", "thesis_approved_date": "2004-05-07", "review_status": "approved", "option_major": { "items": [ "aeronautics", "eng" ] }, "option_minor": { "items": [ "economics" ] }, "copyright_statement": "I hereby certify that, if appropriate, I have obtained a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee.\n\nI hereby grant to California Institute of Technology or its agents the non-exclusive\nlicense to archive and make accessible, under the conditions specified below,\nmy thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.", "pub_year": "1924", "author_list": "Kiesling, Louis" } ]