{"id":557169,"date":"2024-11-05T18:17:11","date_gmt":"2024-11-05T18:17:11","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/esdu-000152010\/"},"modified":"2024-11-05T18:17:11","modified_gmt":"2024-11-05T18:17:11","slug":"esdu-000152010","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/esdu\/esdu-000152010\/","title":{"rendered":"ESDU 00015:2010"},"content":{"rendered":"<p><strong>INTRODUCTION<\/strong><\/p>\n<p>This Data Item describes the use of ESDUpac A0015 which provides<br \/>\na computer program for analysing a disc cam\/follower system. The<br \/>\nprogram allows the following tribological aspects to be<br \/>\nexamined.<\/p>\n<p>\u2022 The surface and sub-surface stresses at the contact between<br \/>\nthe cam and follower.<\/p>\n<p>\u2022 The lubricant film thickness generated between the cam and<br \/>\nfollower.<\/p>\n<p>\u2022 The transient temperature rise (&#034;flash&#034; temperature) in the<br \/>\ncontact between the cam and follower.<\/p>\n<p>\u2022 The driving torque and power loss of the cam.<\/p>\n<p>\u2022 The life of a rolling element bearing follower.<\/p>\n<p>The program determines the contact loads, with or without<br \/>\nfriction, in the operating cam\/follower system and then determines<br \/>\nthe instantaneous contact dimensions, gross deflection (normal<br \/>\nclosure) and contact stresses. The program locates the critical<br \/>\nstress points with respect to three criteria involving yield<br \/>\nfailure, brittle failure and fatigue failure.<\/p>\n<p>Where a Newtonian liquid lubricant is present, the program can<br \/>\nbe used to predict the film thickness of the lubricant entrained<br \/>\ninto the contact. Computation of this lubricant film thickness<br \/>\nincludes an allowance for squeeze film effects at the points in the<br \/>\ncam cycle where the entrainment velocity reverses.<\/p>\n<p>Six types of cam follower are considered including both<br \/>\ntranslating and swinging versions of flat-faced, domed, and roller<br \/>\nfollowers. Also, follower motions involving any number of blended<br \/>\ncam law portions can be analysed. The cam law of each portion can<br \/>\nbe selected from a supplied database of cam law expressions or can<br \/>\nbe specified by the user. The follower load, arising from spring<br \/>\nclosure or a process load, can similarly be selected from a<br \/>\ndatabase or be specified by the user.<\/p>\n<p>Computer parameters of interest can be logged over a full, or<br \/>\npartial, cycle of cam rotation and the values recorded in a file<br \/>\nsuitable for plotting. Alternatively, a single instantaneous point<br \/>\nin the cycle can be examined in more detail and stress distribution<br \/>\ncontours, for example, examined.<\/p>\n<p>This Data Item documents the specification of input data for the<br \/>\nprogram and describes the various output data that can be obtained.<br \/>\nGuidance on interpretation of the output data is given in further<br \/>\nData Items devoted to specific tribological aspects. Guidance on,<br \/>\nand methods for, the design of cams can be found in the ESDU<br \/>\nMechanisms Series (see Section 11). ESDUpac A0015 allows the direct<br \/>\nimport of motion data from many of the Mechanisms Series computer<br \/>\nprograms (see Section 4.2).<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Disc Cams: Tribological Analysis Using Computer Program A0015<\/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>2010-05<\/td>\n<td>NA<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":0,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-557169","1":"product","2":"type-product","3":"status-publish","5":"product_cat-esdu","7":"first","8":"instock","9":"sold-individually","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/557169","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:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=557169"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=557169"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=557169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}