{"id":3223,"date":"2024-03-22T17:26:56","date_gmt":"2024-03-22T15:26:56","guid":{"rendered":"https:\/\/blog.federnshop.com\/schubspannung-berechnen-tschechisch-cz\/"},"modified":"2025-11-11T18:01:19","modified_gmt":"2025-11-11T16:01:19","slug":"schubspannung-berechnen-tschechisch-cz","status":"publish","type":"post","link":"https:\/\/blog.federnshop.com\/cs\/schubspannung-berechnen-tschechisch-cz\/","title":{"rendered":"Vypo\u010d\u00edtejte smykov\u00e9 nap\u011bt\u00ed"},"content":{"rendered":"<p class=\"Text\">Po ur\u010den\u00ed rozm\u011br\u016f pru\u017einy se<a href=\"https:\/\/blog.federnshop.com\/cs\/overeni-funkce-a-pevnosti-tlacnych-pruzin\/\"> D\u016fkaz s\u00edly<\/a> b\u00fdt veden. Za t\u00edmto \u00fa\u010delem se stanov\u00ed st\u00e1vaj\u00edc\u00ed smykov\u00e9 nap\u011bt\u00ed.<\/p>\n<p>&nbsp;<\/p>\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\/schubspannung-berechnen-tschechisch-cz\/#Smykove_napeti_pro_tlacne_pruziny\" >Smykov\u00e9 nap\u011bt\u00ed pro tla\u010dn\u00e9 pru\u017einy<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.federnshop.com\/cs\/schubspannung-berechnen-tschechisch-cz\/#Tlakova_pruzina_ve_smyku_od_sily\" >Tlakov\u00e1 pru\u017eina ve smyku od s\u00edly:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/blog.federnshop.com\/cs\/schubspannung-berechnen-tschechisch-cz\/#Smykove_napeti_Tlakova_pruzina_z_posunu\" >Smykov\u00e9 nap\u011bt\u00ed Tlakov\u00e1 pru\u017eina z posunu:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/blog.federnshop.com\/cs\/schubspannung-berechnen-tschechisch-cz\/#Opravena_tlacna_pruzina_se_smykovym_napetim\" >Opraven\u00e1 tla\u010dn\u00e1 pru\u017eina se smykov\u00fdm nap\u011bt\u00edm:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/blog.federnshop.com\/cs\/schubspannung-berechnen-tschechisch-cz\/#Pripustne_napeti_tlacne_pruziny\" >P\u0159\u00edpustn\u00e9 nap\u011bt\u00ed tla\u010dn\u00e9 pru\u017einy:<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/blog.federnshop.com\/cs\/schubspannung-berechnen-tschechisch-cz\/#Smykove_napeti_pro_tazne_pruziny\" >Smykov\u00e9 nap\u011bt\u00ed pro ta\u017en\u00e9 pru\u017einy<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/blog.federnshop.com\/cs\/schubspannung-berechnen-tschechisch-cz\/#Smykove_napeti\" >Smykov\u00e9 nap\u011bt\u00ed:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/blog.federnshop.com\/cs\/schubspannung-berechnen-tschechisch-cz\/#Opravene_smykove_napeti\" >Opraven\u00e9 smykov\u00e9 nap\u011bt\u00ed :<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/blog.federnshop.com\/cs\/schubspannung-berechnen-tschechisch-cz\/#Pripustne_napeti\" >P\u0159\u00edpustn\u00e9 nap\u011bt\u00ed:<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"Text\"><span class=\"ez-toc-section\" id=\"Smykove_napeti_pro_tlacne_pruziny\"><\/span>Smykov\u00e9 nap\u011bt\u00ed pro tla\u010dn\u00e9 pru\u017einy<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4><\/h4>\n<h4 class=\"Text\"><span class=\"ez-toc-section\" id=\"Tlakova_pruzina_ve_smyku_od_sily\"><\/span>Tlakov\u00e1 pru\u017eina ve smyku od s\u00edly:<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<span class=\"katex-eq\" data-katex-display=\"false\">\\Large\\tau=\\frac{8DF}{\\pi d^{3}}<\/span>\n<h4><\/h4>\n<p>&nbsp;<\/p>\n<h4 class=\"Text\"><span class=\"ez-toc-section\" id=\"Smykove_napeti_Tlakova_pruzina_z_posunu\"><\/span>Smykov\u00e9 nap\u011bt\u00ed Tlakov\u00e1 pru\u017eina z posunu:<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<span class=\"katex-eq\" data-katex-display=\"false\">\\Large\\tau=\\frac{Gds}{\\pi nD^{2}}<\/span>\n<p>&nbsp;<\/p>\n<p>Zat\u00edmco pro n\u00e1vrh staticky nebo kvazistaticky zat\u00ed\u017een\u00fdch pru\u017ein se m\u00e1 pou\u017e\u00edt smykov\u00e9 nap\u011bt\u00ed \u03c4, pou\u017eije se korigovan\u00e9 smykov\u00e9 nap\u011bt\u00ed \u03c4<sub>k<\/sub> pro dynamicky nam\u00e1han\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. S korek\u010dn\u00edm faktorem nap\u011bt\u00ed k, kter\u00fd z\u00e1vis\u00ed na pom\u011bru nav\u00edjen\u00ed (pom\u011br st\u0159edn\u00edho pr\u016fm\u011bru k tlou\u0161\u0165ce dr\u00e1tu) 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<h4><\/h4>\n<h4 class=\"Text\"><span class=\"ez-toc-section\" id=\"Opravena_tlacna_pruzina_se_smykovym_napetim\"><\/span>Opraven\u00e1 tla\u010dn\u00e1 pru\u017eina se smykov\u00fdm nap\u011bt\u00edm:<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau_{{\\kappa}}=\\kappa\\cdot\\tau <\/span>\n<p class=\"Text\">kde pro k plat\u00ed (podle Bergstr\u00e4ssera): <span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\kappa=\\frac{\\frac{D}{d}+0,5}{\\frac{D}{d}-0,75}<\/span><\/p>\n<p>Nyn\u00ed je provedeno srovn\u00e1n\u00ed s povolen\u00fdm nap\u011bt\u00edm. To je definov\u00e1no takto:<\/p>\n<h4 class=\"Text\"><span class=\"ez-toc-section\" id=\"Pripustne_napeti_tlacne_pruziny\"><\/span>P\u0159\u00edpustn\u00e9 nap\u011bt\u00ed tla\u010dn\u00e9 pru\u017einy:<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau_{{zul}}=0,5\\cdot R_{{m}}<\/span>\n<p>nebo<\/p>\n<span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau_{{czul}}=0,56\\cdot R_{{m}}<\/span>\n<p>&nbsp;<\/p>\n<p>Hodnoty pro <a href=\"https:\/\/blog.federnshop.com\/zugfestigkeit-federwerkstoffe\/\" target=\"_blank\" rel=\"noopener noreferrer\">Minim\u00e1ln\u00ed pevnost v tahu R<sub>m<\/sub><\/a> jsou z\u00e1visl\u00e9 na tlou\u0161\u0165ce dr\u00e1tu a lze je naj\u00edt v norm\u00e1ch p\u0159\u00edslu\u0161n\u00fdch materi\u00e1l\u016f.<\/p>\n<p>Zpravidla mus\u00ed b\u00fdt mo\u017en\u00e9 stla\u010dit tla\u010dn\u00e9 pru\u017einy a\u017e do d\u00e9lky bloku, proto je p\u0159\u00edpustn\u00e9 nap\u011bt\u00ed p\u0159i d\u00e9lce bloku tc<sub>zul<\/sub> zv\u00e1\u017eit.<\/p>\n<p class=\"Text\">Na <a href=\"https:\/\/blog.federnshop.com\/cs\/unavova-sila\/\">dynamick\u00e9 nap\u011bt\u00ed<\/a> mus\u00ed spodn\u00ed a horn\u00ed nap\u011bt\u00ed (t<sub>k<\/sub>1 a t<sub>k<\/sub>2) p\u0159\u00edslu\u0161n\u00e9ho zdvihu lze ur\u010dit. 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. Tohle jsou <a href=\"https:\/\/www.beuth.de\/de\/norm\/din-en-13906-1\/189797622\" target=\"_blank\" rel=\"noopener noreferrer\">Diagramy \u00fanavov\u00e9 pevnosti podle EN 13906-1: 2002<\/a> odkazuj\u00ed na. Pokud nap\u011bt\u00ed vydr\u017e\u00ed toto srovn\u00e1n\u00ed, je pru\u017eina odoln\u00e1 proti \u00fanav\u011b s cyklem mezn\u00edho zat\u00ed\u017een\u00ed 10<sup>7<\/sup>.<\/p>\n<p>&nbsp;<\/p>\n<h2 class=\"Text\"><span class=\"ez-toc-section\" id=\"Smykove_napeti_pro_tazne_pruziny\"><\/span>Smykov\u00e9 nap\u011bt\u00ed pro ta\u017en\u00e9 pru\u017einy<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Stejn\u011b jako u <a href=\"https:\/\/blog.federnshop.com\/druckfederberechnung-winfsb\/\">V\u00fdpo\u010dty tla\u010dn\u00e9 pru\u017einy<\/a> je t\u0159eba ur\u010dit st\u00e1vaj\u00edc\u00ed smykov\u00e9 nap\u011bt\u00ed.<\/p>\n<h4 class=\"Text\"><span class=\"ez-toc-section\" id=\"Smykove_napeti\"><\/span>Smykov\u00e9 nap\u011bt\u00ed:<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau=\\frac{8DF}{\\pi d^{3}}<\/span>\n<p>&nbsp;<\/p>\n<p>Opraven\u00e9 nap\u011bt\u00ed zdvihu je t\u0159eba vypo\u010d\u00edtat tak\u00e9 pro dynamick\u00e9 zat\u00ed\u017een\u00ed (viz kapitola 1.4.2.2).<\/p>\n<h4><\/h4>\n<h4><span class=\"ez-toc-section\" id=\"Opravene_smykove_napeti\"><\/span>Opraven\u00e9 smykov\u00e9 nap\u011bt\u00ed :<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau_{{\\kappa}}=\\kappa\\cdot\\tau<\/span>\n<h4><\/h4>\n<h4><span class=\"ez-toc-section\" id=\"Pripustne_napeti\"><\/span>P\u0159\u00edpustn\u00e9 nap\u011bt\u00ed:<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau_{{zul}}=0,45 \\cdot R_{{m}}<\/span>\n<p>&nbsp;<\/p>\n<p>St\u00e1vaj\u00edc\u00ed maxim\u00e1ln\u00ed nap\u011bt\u00ed t<sub>n<\/sub> pro nejv\u011bt\u0161\u00ed cestov\u00e1n\u00ed s<sub>n<\/sub> je nastavena na hodnotu rovnaj\u00edc\u00ed se povolen\u00e9mu nap\u011bt\u00ed. K tomu<a href=\"https:\/\/blog.federnshop.com\/cs\/relaxace-v-pramenech\/\"> Relaxace<\/a> Aby se tomu zabr\u00e1nilo, m\u011blo by se v praxi pou\u017e\u00edt pouze 80% tohoto pojezdu pru\u017einy.<\/p>\n<span class=\"katex-eq\" data-katex-display=\"false\">\\Large s_{{2}}=0,8 \\cdot s_{{n}}<\/span>\n<p>&nbsp;<\/p>\n<p>Pro dynamick\u00e1 zat\u00ed\u017een\u00ed nelze uv\u00e9st \u017e\u00e1dn\u00e9 obecn\u011b platn\u00e9 hodnoty \u00fanavov\u00e9 pevnosti, proto\u017ee v ohybov\u00fdch bodech o\u010dek mohou nastat dal\u0161\u00ed nap\u011bt\u00ed, z nich\u017e n\u011bkter\u00e1 mohou p\u0159ekro\u010dit p\u0159\u00edpustn\u00e1 nap\u011bt\u00ed.<a href=\"https:\/\/blog.federnshop.com\/cs\/druhy-napeti-pro-tazne-pruziny\/\"> Ta\u017en\u00e9 pru\u017einy by proto m\u011bly b\u00fdt pokud mo\u017eno vystaveny statick\u00e9mu zat\u00ed\u017een\u00ed<\/a> . Pokud se nelze vyhnout dynamick\u00e9mu nam\u00e1h\u00e1n\u00ed, m\u011blo by se jednat o \u00fahel<a href=\"https:\/\/blog.federnshop.com\/cs\/tazne-pruziny-s-ockem\/\"> O\u010dka<\/a> obejd\u011bte se a pou\u017eijte v\u00e1lcovan\u00e9 nebo za\u0161roubovan\u00e9 koncov\u00e9 d\u00edly. Zkou\u0161ka \u017eivotnosti za pozd\u011bj\u0161\u00edch provozn\u00edch podm\u00ednek m\u00e1 smysl. A<a href=\"https:\/\/blog.federnshop.com\/cs\/vystrel-z-kovovych-pruzin\/\"> Zpevn\u011bn\u00ed povrchu brokov\u00e1n\u00edm<\/a> nen\u00ed mo\u017en\u00e9 z d\u016fvodu t\u011bsn\u00fdch zat\u00e1\u010dek.<\/p>\n<p>Vysv\u011btlen\u00ed symbol\u016f:<br \/>\nd = pr\u016fm\u011br dr\u00e1tu (mm)<br \/>\nD = st\u0159edn\u00ed pr\u016fm\u011br c\u00edvky (mm)<br \/>\nF = s\u00edla pru\u017einy (N)<br \/>\nG = modul smyku (N \/ mm\u00b2)<br \/>\nn = po\u010det pru\u017en\u00fdch c\u00edvek (kus\u016f)<br \/>\nRm = minim\u00e1ln\u00ed pevnost v tahu (N \/ mm\u00b2)<br \/>\ns = zdvih pru\u017einy (mm)<br \/>\n\u03c4 = smykov\u00e9 nap\u011bt\u00ed (N \/ mm\u00b2)<br \/>\n\u03c4zul = p\u0159\u00edpustn\u00e9 smykov\u00e9 nap\u011bt\u00ed (N \/ mm\u00b2)<br \/>\n\u03c4czul = p\u0159\u00edpustn\u00e9 smykov\u00e9 nap\u011bt\u00ed pro d\u00e9lku bloku (N \/ mm\u00b2)<\/p>\n<p><em>Dodate\u010dn\u00e9 informace:<\/em><\/p>\n<ul>\n<li><a href=\"https:\/\/www.federnshop.com\/de\/produkte\/druckfedern\/berechnung.html\" target=\"_blank\" rel=\"noopener noreferrer\">V\u00fdpo\u010det tla\u010dn\u00e9 pru\u017einy online<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.federnshop.com\/de\/berechnung\/zugfedern.html\" target=\"_blank\" rel=\"noopener noreferrer\">V\u00fdpo\u010det ta\u017en\u00e9 pru\u017einy online<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/blog.federnshop.com\/neues-federnberechnungsprogramm\/\">Jarn\u00ed v\u00fdpo\u010detn\u00ed program WinFSB 8<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/blog.federnshop.com\/zugfestigkeit-federwerkstoffe\/\">Pru\u017en\u00e9 materi\u00e1ly s pevnost\u00ed v tahu<\/a><\/li>\n<\/ul>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Po ur\u010den\u00ed rozm\u011br\u016f pru\u017einy se D\u016fkaz s\u00edly b\u00fdt veden. Za t\u00edmto \u00fa\u010delem se stanov\u00ed st\u00e1vaj\u00edc\u00ed smykov\u00e9 nap\u011bt\u00ed. &nbsp; Smykov\u00e9 nap\u011bt\u00ed pro tla\u010dn\u00e9 pru\u017einy Tlakov\u00e1 pru\u017eina ve smyku od s\u00edly: &nbsp; Smykov\u00e9 nap\u011bt\u00ed Tlakov\u00e1 pru\u017eina z posunu: &nbsp; Zat\u00edmco pro n\u00e1vrh<\/p>\n","protected":false},"author":4,"featured_media":3221,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[919,558,452],"tags":[563,559,561,560,564,565,562],"class_list":["post-3223","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dratene-pruziny","category-prumysl","category-znalost","tag-bergstraesser-cs","tag-festigkeitsnachweis-cs","tag-korrigierte-schubspannung-cs","tag-schubspannung-cs","tag-schubspannung-druckfedern-cs","tag-schubspannung-zugfedern-cs","tag-zulaessige-spannung-cs"],"_links":{"self":[{"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/posts\/3223","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=3223"}],"version-history":[{"count":12,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/posts\/3223\/revisions"}],"predecessor-version":[{"id":12216,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/posts\/3223\/revisions\/12216"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/media\/3221"}],"wp:attachment":[{"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/media?parent=3223"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/categories?post=3223"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/tags?post=3223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}