{"id":8193,"date":"2021-06-29T16:19:16","date_gmt":"2021-06-29T14:19:16","guid":{"rendered":"https:\/\/blog.federnshop.com\/overeni-funkce-a-pevnosti-tlacnych-pruzin\/"},"modified":"2021-06-29T16:19:43","modified_gmt":"2021-06-29T14:19:43","slug":"overeni-funkce-a-pevnosti-tlacnych-pruzin","status":"publish","type":"post","link":"https:\/\/blog.federnshop.com\/cs\/overeni-funkce-a-pevnosti-tlacnych-pruzin\/","title":{"rendered":"Ov\u011b\u0159en\u00ed funkce a pevnosti tla\u010dn\u00fdch pru\u017ein"},"content":{"rendered":"<p><span style=\"text-decoration: underline;\">Ka\u017ed\u00fd n\u00e1vrh pru\u017einy tla\u010dn\u00e9 pru\u017einy sest\u00e1v\u00e1 ze dvou stup\u0148\u016f<\/span> :<br \/>\n1. D\u016fkaz funkce s ov\u011b\u0159en\u00edm rozm\u011br\u016f, tuhosti pru\u017einy, sil, chodu pru\u017einy a chov\u00e1n\u00ed vibrac\u00ed.<br \/>\n2. D\u016fkaz pevnosti s ov\u011b\u0159en\u00edm souladu s p\u0159\u00edpustn\u00fdm nam\u00e1h\u00e1n\u00edm nebo \u00fanavovou pevnost\u00ed.<\/p>\n<h2><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-716 size-large\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/\/GF_Druckfedern_technisch-1024x663.jpg\" alt=\"Vysv\u011btlen\u00ed vzorce tla\u010dn\u00e9 pru\u017einy\" width=\"700\" height=\"453\" data-wp-pid=\"716\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/GF_Druckfedern_technisch-1024x663.jpg 1024w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/GF_Druckfedern_technisch-300x194.jpg 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/GF_Druckfedern_technisch-600x389.jpg 600w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/GF_Druckfedern_technisch-200x130.jpg 200w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/GF_Druckfedern_technisch-800x518.jpg 800w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/GF_Druckfedern_technisch.jpg 2001w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/h2>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.federnshop.com\/cs\/overeni-funkce-a-pevnosti-tlacnych-pruzin\/#Dukaz_funkce\" >D\u016fkaz funkce<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.federnshop.com\/cs\/overeni-funkce-a-pevnosti-tlacnych-pruzin\/#Dukaz_sily\" >D\u016fkaz s\u00edly<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Dukaz_funkce\"><\/span>D\u016fkaz funkce<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Pro v\u00e1lcov\u00e9 tla\u010dn\u00e9 pru\u017einy z dr\u00e1tu kruhov\u00e9ho pr\u016f\u0159ezu plat\u00ed toto.<\/p>\n<p><span style=\"text-decoration: underline;\">Jarn\u00ed sazba<\/span> :<\/p>\n<p style=\"text-align: left;\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-8197 aligncenter\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Federrate.png\" alt=\"Druckfeder Formel - Federrate\" width=\"155\" height=\"100\" data-wp-pid=\"737\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Federrate.png 309w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Federrate-300x194.png 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Federrate-200x129.png 200w\" sizes=\"auto, (max-width: 155px) 100vw, 155px\" \/><\/p>\n<p style=\"text-align: left;\">z R = F \/ s vypl\u00fdv\u00e1 &#8230;<\/p>\n<p><span style=\"text-decoration: underline;\">S\u00edla pru\u017einy<\/span> :<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-8196 aligncenter\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Federkraft.png\" alt=\"Druckfeder Formel - Federkraft\" width=\"158\" height=\"100\" data-wp-pid=\"736\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Federkraft.png 315w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Federkraft-300x190.png 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Federkraft-200x127.png 200w\" sizes=\"auto, (max-width: 158px) 100vw, 158px\" \/><\/p>\n<p>tak jako &#8230;<\/p>\n<p><span style=\"text-decoration: underline;\">Pojezdov\u00e1 dr\u00e1ha<\/span> :<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-8198 aligncenter\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Federweg.png\" alt=\"Druckfeder Formel - Federweg\" width=\"173\" height=\"100\" data-wp-pid=\"738\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Federweg.png 345w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Federweg-300x174.png 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Federweg-200x116.png 200w\" sizes=\"auto, (max-width: 173px) 100vw, 173px\" \/><\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Dukaz_sily\"><\/span>D\u016fkaz s\u00edly<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Po ur\u010den\u00ed rozm\u011br\u016f pru\u017einy mus\u00ed b\u00fdt pevnost ov\u011b\u0159ena. Za t\u00edmto \u00fa\u010delem se stanov\u00ed st\u00e1vaj\u00edc\u00ed smykov\u00e9 nap\u011bt\u00ed.<\/p>\n<p><span style=\"text-decoration: underline;\">Nap\u011bt\u00ed ze s\u00edly<\/span> :<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-8200 aligncenter\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Spannung-aus-Kraft.png\" alt=\"Druckfeder Formel - Spannung aus Kraft\" width=\"152\" height=\"100\" data-wp-pid=\"740\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Spannung-aus-Kraft.png 303w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Spannung-aus-Kraft-300x198.png 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Spannung-aus-Kraft-200x132.png 200w\" sizes=\"auto, (max-width: 152px) 100vw, 152px\" \/><\/p>\n<p><span style=\"text-decoration: underline;\">Nap\u011bt\u00ed z cesty<\/span> :<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-8201 aligncenter\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Spannung-aus-Weg.png\" alt=\"Druckfeder Formel - Spannung aus Weg\" width=\"158\" height=\"100\" data-wp-pid=\"741\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Spannung-aus-Weg.png 316w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Spannung-aus-Weg-300x190.png 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Spannung-aus-Weg-200x127.png 200w\" sizes=\"auto, (max-width: 158px) 100vw, 158px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Zat\u00edmco smykov\u00e9 nap\u011bt\u00ed \u01ae se pou\u017e\u00edv\u00e1 pro n\u00e1vrh staticky nebo kvazistaticky zat\u00ed\u017een\u00fdch pru\u017ein, opraven\u00e9 smykov\u00e9 nap\u011bt\u00ed \u01aek plat\u00ed pro dynamicky zat\u00ed\u017een\u00e9 pru\u017einy. Rozlo\u017een\u00ed smykov\u00e9ho nap\u011bt\u00ed v pr\u016f\u0159ezu dr\u00e1tu pru\u017einy je nerovnom\u011brn\u00e9. Nejvy\u0161\u0161\u00ed nap\u011bt\u00ed nast\u00e1v\u00e1 na vnit\u0159n\u00edm pr\u016fm\u011bru pru\u017einy. Pomoc\u00ed korek\u010dn\u00edho faktoru nap\u011bt\u00ed \u201ek\u201c, kter\u00fd z\u00e1vis\u00ed na pom\u011bru vinut\u00ed (pom\u011br st\u0159edn\u00edho pr\u016fm\u011bru \u201eD\u201c k velikosti dr\u00e1tu \u201ed\u201c) pru\u017einy, lze p\u0159ibli\u017en\u011b ur\u010dit nejvy\u0161\u0161\u00ed nap\u011bt\u00ed. U dynamicky nam\u00e1han\u00fdch pru\u017ein dostaneme:<\/p>\n<p><span style=\"text-decoration: underline;\">Opraven\u00e9 smykov\u00e9 nap\u011bt\u00ed<\/span> : \u01aek = k \u00b7 \u01ae<\/p>\n<p>kde plat\u00ed k (podle Bergstr\u00e4\u00dfera):<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-8199 aligncenter\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_K-Wert-Bergstraesser.png\" alt=\"Druckfeder Formel - k-Wert nach Bergstr\u00e4sser\" width=\"198\" height=\"180\" data-wp-pid=\"739\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_K-Wert-Bergstraesser.png 440w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_K-Wert-Bergstraesser-300x273.png 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_K-Wert-Bergstraesser-200x182.png 200w\" sizes=\"auto, (max-width: 198px) 100vw, 198px\" \/><\/p>\n<p>Nyn\u00ed je provedeno srovn\u00e1n\u00ed s povolen\u00fdm nap\u011bt\u00edm. To je definov\u00e1no takto:<\/p>\n<p><span style=\"text-decoration: underline;\">P\u0159\u00edpustn\u00e9 nap\u011bt\u00ed:<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-8202 aligncenter\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Zulaessige-Spannung.png\" alt=\"Druckfeder Formel - Zul\u00e4ssige Spannung\" width=\"178\" height=\"50\" data-wp-pid=\"742\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Zulaessige-Spannung.png 355w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Zulaessige-Spannung-300x85.png 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Zulaessige-Spannung-200x56.png 200w\" sizes=\"auto, (max-width: 178px) 100vw, 178px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-8203 aligncenter\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Zulaessige-Spannung-bei-Blocklaenge.png\" alt=\"Druckfeder Formel - Zul\u00e4ssige Spannung bei Blockl\u00e4nge\" width=\"203\" height=\"50\" data-wp-pid=\"743\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Zulaessige-Spannung-bei-Blocklaenge.png 406w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Zulaessige-Spannung-bei-Blocklaenge-300x74.png 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Formel_Zulaessige-Spannung-bei-Blocklaenge-200x49.png 200w\" sizes=\"auto, (max-width: 203px) 100vw, 203px\" \/><\/p>\n<p>Hodnoty minim\u00e1ln\u00ed pevnosti v tahu Rm z\u00e1vis\u00ed na tlou\u0161\u0165ce dr\u00e1tu a jsou v p\u0159\u00edslu\u0161n\u00fdch norm\u00e1ch<a title=\"Federwerkstoffe\" href=\"https:\/\/blog.federnshop.com\/cs\/vlastnosti-pruzinove-oceli\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Materi\u00e1ly<\/a> naj\u00edt. Zpravidla mus\u00ed b\u00fdt mo\u017en\u00e9 stla\u010dit tla\u010dn\u00e9 pru\u017einy a\u017e do d\u00e9lky bloku, proto je t\u0159eba zohlednit p\u0159\u00edpustn\u00e9 nap\u011bt\u00ed pro d\u00e9lku bloku \u01aeczul. Na<a href=\"https:\/\/blog.federnshop.com\/cs\/druhy-tlakovych-pruzin\/\" target=\"_blank\" rel=\"noopener noreferrer\"> dynamick\u00e9 nap\u011bt\u00ed<\/a> mus\u00ed b\u00fdt stanoveno spodn\u00ed a horn\u00ed nap\u011bt\u00ed (\u01aek1 a \u01aek2) p\u0159\u00edslu\u0161n\u00e9ho zdvihu. Rozd\u00edl je v zdvihov\u00e9m nap\u011bt\u00ed. Horn\u00ed nap\u011bt\u00ed i nap\u011bt\u00ed zdvihu nesm\u00ed p\u0159ekro\u010dit odpov\u00eddaj\u00edc\u00ed p\u0159\u00edpustn\u00e9 hodnoty. Toto jsou diagramy \u00fanavov\u00e9 pevnosti<a title=\"DIN EN 13906-1\" href=\"http:\/\/www.beuth.de\/de\/norm\/din-en-13906-1\/189797622\" target=\"_blank\" rel=\"noopener noreferrer\"> EN 13906-1<\/a> k nalezen\u00ed nebo v<a title=\"Druckfedernberechnung WinFSB\" href=\"https:\/\/www.federnshop.com\/de\/produkte\/druckfedern\/berechnung.html\" target=\"_blank\" rel=\"noopener noreferrer\"> Jarn\u00ed v\u00fdpo\u010detn\u00ed program WinFSB<\/a> zkontrolovat (<a title=\"Lehrvideo Druckfedernberechnung mit WinFSB\" href=\"https:\/\/youtu.be\/EusjLYwYpLE\" target=\"_blank\" rel=\"noopener noreferrer\"> V\u00fdpo\u010det kompresn\u00ed pru\u017einy videa s WinFSB<\/a> ). Pokud nap\u011bt\u00ed v tomto srovn\u00e1n\u00ed obstoj\u00ed, je pru\u017eina odoln\u00e1 proti \u00fanav\u011b s cyklem mezn\u00edho zat\u00ed\u017een\u00ed 10<sup> 7.<\/sup><\/p>","protected":false},"excerpt":{"rendered":"<p>Ka\u017ed\u00fd n\u00e1vrh pru\u017einy tla\u010dn\u00e9 pru\u017einy sest\u00e1v\u00e1 ze dvou stup\u0148\u016f : 1. D\u016fkaz funkce s ov\u011b\u0159en\u00edm rozm\u011br\u016f, tuhosti pru\u017einy, sil, chodu pru\u017einy a chov\u00e1n\u00ed vibrac\u00ed. 2. D\u016fkaz pevnosti s ov\u011b\u0159en\u00edm souladu s p\u0159\u00edpustn\u00fdm nam\u00e1h\u00e1n\u00edm nebo \u00fanavovou pevnost\u00ed. D\u016fkaz funkce Pro v\u00e1lcov\u00e9<\/p>\n","protected":false},"author":4,"featured_media":3772,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[919,992,920,452],"tags":[1139,608,2112,1499,780,1417,559,1918,2113,560,2111,2114],"class_list":["post-8193","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dratene-pruziny","category-servis-cz","category-tlacne-pruziny","category-znalost","tag-dauerfestigkeit-cs","tag-druckfedern-cs","tag-dukaz-funkce","tag-federauslegung-cs","tag-federnberechnung-cs","tag-federovat","tag-festigkeitsnachweis-cs","tag-goodmanuv-diagram","tag-korekcni-faktor-napeti-k","tag-schubspannung-cs","tag-vibracni-chovani","tag-vypocitejte-pruzinu"],"_links":{"self":[{"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/posts\/8193","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/comments?post=8193"}],"version-history":[{"count":1,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/posts\/8193\/revisions"}],"predecessor-version":[{"id":8449,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/posts\/8193\/revisions\/8449"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/media\/3772"}],"wp:attachment":[{"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/media?parent=8193"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/categories?post=8193"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/tags?post=8193"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}