{"id":559926,"date":"2024-11-05T18:25:35","date_gmt":"2024-11-05T18:25:35","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/esdu-tm-711990\/"},"modified":"2024-11-05T18:25:35","modified_gmt":"2024-11-05T18:25:35","slug":"esdu-tm-711990","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/esdu\/esdu-tm-711990\/","title":{"rendered":"ESDU TM 71:1990"},"content":{"rendered":"<p><strong>INTRODUCTION<\/strong><\/p>\n<p>This note describes the method of analysis and computation<br \/>\nprocedure used in Item No. 90016 (Reference 1) for the estimation<br \/>\nof natural frequencies of flat rectangular plates. The method of<br \/>\nanalysis is applicable to the computation of the lower natural<br \/>\nfrequencies, and mode shapes, of isotropic or specially orthotropic<br \/>\nplates. Plates are specially orthotropic when their principal axes<br \/>\nof orthotropy are parallel to the plate edges. The method of<br \/>\nanalysis is based on that described in Reference 2 and uses the<br \/>\nRayleigh-Ritz method in which the displacements are assumed to be<br \/>\nrepresented by a series of orthogonal polynomial functions. The<br \/>\npolynomial functions are chosen to satisfy the plate boundary<br \/>\nconditions. In the analysis, provision is made for constant<br \/>\nin-plane forces, acting on the middle surface of the plate, in both<br \/>\nthe x- and y- directions together with a constant in-plane shear<br \/>\nforce.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>A Rayleigh-Ritz Method of Analysis for Vibration of Orthotropic Plates Under Static In-Plane Loading (Including Shear)<\/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>1990-08<\/td>\n<td>23<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":559936,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-559926","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\/559926","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\/559936"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=559926"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=559926"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=559926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}