{"id":63567,"date":"2020-06-17T12:40:33","date_gmt":"2020-06-17T12:40:33","guid":{"rendered":"https:\/\/www.xyztec.com\/docs\/force-calculations\/"},"modified":"2023-09-26T12:39:06","modified_gmt":"2023-09-26T12:39:06","slug":"force-calculations","status":"publish","type":"docs","link":"https:\/\/www.xyztec.com\/zh-hans\/knowledgecenter\/guidelines-zh-hans\/force-calculations\/","title":{"rendered":"Force calculations"},"content":{"rendered":"<h1>Force calculations<\/h1>\n<h2>Wire length L<\/h2>\n<p>If the geometry of the sample and the wire length are known the resultant angles and forces on the bonds during wire pull can be determined. If the wire length L is unknown, it can be calculated from the\u00a0loop height.<\/p>\n<div><\/div>\n<div><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-9404\" src=\"https:\/\/www.xyztec.com\/wp-content\/uploads\/2023\/06\/Wire-pull-calculate-length.png\" alt=\"Wire-pull-calculate-length\" width=\"620\" height=\"227\" \/><\/div>\n<div><\/div>\n<p>The general equation is as follows:<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-9397\" src=\"https:\/\/www.xyztec.com\/wp-content\/uploads\/2023\/06\/Wire-length-general-equation.png\" alt=\"Wire-length-general-equation\" width=\"215\" height=\"37\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>If there is no height difference between the first and second bond and the pulltest is performed mid span, the equation can be simplified to:<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-9390\" src=\"https:\/\/www.xyztec.com\/wp-content\/uploads\/2023\/06\/Wire-length-mid-span-equation.png\" alt=\"Wire-length-mid-span-equation\" width=\"99\" height=\"54\" \/><\/p>\n<h2>Position d<sub>1<\/sub>\u00a0from first bond angle \u03b8<\/h2>\n<p>If you want to pull with a specific angle \u03b8 at the first bond, calculate the test position along the wire according to the following formula.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9383\" src=\"https:\/\/www.xyztec.com\/wp-content\/uploads\/2023\/06\/Wire-pull-position-along-wire-at-specific-angle.png\" alt=\"Wire-pull-position-along-wire-at-specific-angle\" width=\"442\" height=\"74\" \/><\/p>\n<h2>Position d<sub>1<\/sub>\u00a0from second bond angle \u03b8<\/h2>\n<div class=\"picture left\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9376\" src=\"https:\/\/www.xyztec.com\/wp-content\/uploads\/2023\/06\/Wire-pull-distance-from-second-bond.png\" alt=\"Wire-pull-distance-from-second-bond\" width=\"620\" height=\"300\" \/><\/div>\n<p>You can use the same equation to calculate d<sub>1<\/sub>\u00a0for the second bond by making h<sub>2<\/sub>\u00a0negative. \u03a6 then becomes \u03b8 and d<sub>1<\/sub>\u00a0is measured from the second bond.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9369\" src=\"https:\/\/www.xyztec.com\/wp-content\/uploads\/2023\/06\/Wire-pull-position-along-wire-at-specific-angle-1.png\" alt=\"Wire-pull-position-along-wire-at-specific-angle (1)\" width=\"442\" height=\"74\" \/><\/p>\n<h2>Angle at second bond \u03a6<\/h2>\n<p>The angle at the second bond \u03a6 is derived from this expression.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9362\" src=\"https:\/\/www.xyztec.com\/wp-content\/uploads\/2023\/06\/Equation-angle-second-bond-wire-pull.png\" alt=\"Equation-angle-second-bond-wire-pull\" width=\"503\" height=\"91\" \/><\/p>\n<h2>Pull at equal angles<\/h2>\n<p>If you want to pull with equal angles (\u03b8=\u03a6), the following formulas apply.<\/p>\n<div class=\"picture left\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9355\" src=\"https:\/\/www.xyztec.com\/wp-content\/uploads\/2023\/06\/Wire-pull-force-schematic.png\" alt=\"Wire-pull-force-schematic\" width=\"620\" height=\"297\" \/><\/div>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9348\" src=\"https:\/\/www.xyztec.com\/wp-content\/uploads\/2023\/06\/wire-pull-equal-angles.png\" alt=\"wire-pull-equal-angles\" width=\"123\" height=\"36\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9415\" src=\"https:\/\/www.xyztec.com\/wp-content\/uploads\/2023\/06\/wire-pull-equal-angles-distance-from-first-bond.png\" alt=\"wire-pull-equal-angles-distance-from-first-bond\" width=\"138\" height=\"36\" \/><\/p>\n<p>The forces t, p and s then are as follows.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9313\" src=\"https:\/\/www.xyztec.com\/wp-content\/uploads\/2023\/06\/wire-pull-force-t2.png\" alt=\"wire-pull-force-t2\" width=\"56\" height=\"26\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9320\" src=\"https:\/\/www.xyztec.com\/wp-content\/uploads\/2023\/06\/wire-pull-force-s.png\" alt=\"wire-pull-force-s\" width=\"121\" height=\"31\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9327\" src=\"https:\/\/www.xyztec.com\/wp-content\/uploads\/2023\/06\/wire-pull-force-p2.png\" alt=\"wire-pull-force-p2\" width=\"75\" height=\"20\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9334\" src=\"https:\/\/www.xyztec.com\/wp-content\/uploads\/2023\/06\/wire-pull-force-p1.png\" alt=\"wire-pull-force-p1\" width=\"88\" height=\"31\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9341\" src=\"https:\/\/www.xyztec.com\/wp-content\/uploads\/2023\/06\/wire-pull-force-t1.png\" alt=\"wire-pull-force-t1\" width=\"80\" height=\"31\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Force calculations Wire length [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":57478,"parent":0,"comment_status":"open","ping_status":"open","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-63567","docs","type-docs","status-publish","has-post-thumbnail","hentry","doc_category-guidelines-zh-hans"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Force calculations<\/title>\n<meta name=\"description\" content=\"If the geometry of the sample and the wire length are known the resultant angles and forces on the bonds during wire pull can be 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