{"id":558303,"date":"2024-11-05T18:20:38","date_gmt":"2024-11-05T18:20:38","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/esdu-800402012\/"},"modified":"2024-11-05T18:20:38","modified_gmt":"2024-11-05T18:20:38","slug":"esdu-800402012","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/esdu\/esdu-800402012\/","title":{"rendered":"ESDU 80040:2012"},"content":{"rendered":"<p>\n\tESDU 80040 provides computer programs to calculate the lower<br \/>\nnatural frequencies and mode shapes for axial and circumferential<br \/>\nvibration of circular-cylindrical, uniform shells with either<br \/>\nuniform stringer stiffeners or uniform ring stiffeners, or a<br \/>\ncombination of both types of stiffener, which can be modelled as<br \/>\nhomogeneous orthotropic shells. Such modelling is usually<br \/>\napplicable when the stringers are uniformly and closely pitched<br \/>\naround the shell circumference and the rings are uniformly and<br \/>\nclosely pitched along the shell longitudinal axis. The results<br \/>\nobtained should be used as guidelines to practical shell behaviour.<br \/>\nTwo programs, ESDUpac A8040 and ESDUpac B8040, are given: ESDUpac<br \/>\nA8040 applies to initially unstressed shells or to shells having<br \/>\ninitial stress due to static axial and\/or pressure loading with all<br \/>\ncombinations of clamped, shear diaphragm and free shell end<br \/>\nconditions while ESDUpac B8040 applies to an initially unstressed<br \/>\nshell using either the discrete stiffener or smeared stiffener<br \/>\nmodel but only with shear diaphragm end conditions. The format of<br \/>\nthe input to and output from the programs is illustrated by worked<br \/>\nexamples. In addition, equations are given for estimating the<br \/>\ntorsional natural frequencies and mode shapes for all combinations<br \/>\nof end conditions except clamped\/shear diaphragm.\n\t<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Free Vibration of Thin-Walled, Orthogonally Stiffened, Circular-Cylindrical Shells<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/esdu\/\"><b>ESDU<\/b><\/a><\/td>\n<td>2012-12<\/td>\n<td>36<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":558311,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-558303","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-esdu","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/558303","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/558311"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=558303"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=558303"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=558303"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}