{"id":6646,"date":"2024-06-09T12:52:10","date_gmt":"2024-06-09T10:52:10","guid":{"rendered":"https:\/\/blog.federnshop.com\/druhy-tlakovych-pruzin\/"},"modified":"2024-06-12T11:34:10","modified_gmt":"2024-06-12T09:34:10","slug":"druhy-tlakovych-pruzin","status":"publish","type":"post","link":"https:\/\/blog.federnshop.com\/cs\/druhy-tlakovych-pruzin\/","title":{"rendered":"Druhy zat\u00ed\u017een\u00ed tla\u010dn\u00fdch pru\u017ein"},"content":{"rendered":"<p>P\u0159ed interpretac\u00ed<a href=\"https:\/\/blog.federnshop.com\/cs\/informacni-tlacne-pruziny\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Kompresn\u00ed pru\u017eina<\/a> V z\u00e1sad\u011b by m\u011blo b\u00fdt objasn\u011bno, zda je zam\u00fd\u0161len\u00fd typ nap\u011bt\u00ed statick\u00fd, kvazi-statick\u00fd nebo dynamick\u00fd.<\/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\/druhy-tlakovych-pruzin\/#Staticke_nebo_kvazistaticke_napeti\" >Statick\u00e9 nebo kvazistatick\u00e9 nap\u011bt\u00ed<\/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\/druhy-tlakovych-pruzin\/#Dynamicky_stres\" >Dynamick\u00fd stres<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Staticke_nebo_kvazistaticke_napeti\"><\/span>Statick\u00e9 nebo kvazistatick\u00e9 nap\u011bt\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u010casov\u011b konstantn\u00ed (klidov\u00e9) zat\u00ed\u017een\u00ed nebo \u010dasov\u011b prom\u011bnliv\u00e9 zat\u00ed\u017een\u00ed s celkov\u00fdm men\u0161\u00edm ne\u017e 10 000 zdvihy nebo mal\u00fdmi zdvihov\u00fdmi nap\u011bt\u00edmi a\u017e 0,1 x \u00fanavov\u00e1 pevnost (\u03c4kh = \u03c4k2 -\u03c4k1).<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Dynamicky_stres\"><\/span>Dynamick\u00fd stres<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Dynamick\u00e9 nap\u011bt\u00ed v pru\u017ein\u00e1ch je definov\u00e1no jako nap\u011bt\u00ed, kter\u00e9 se v pr\u016fb\u011bhu \u010dasu m\u011bn\u00ed s v\u00edce ne\u017e 10 000 zm\u011bnami zat\u00ed\u017een\u00ed nebo tahov\u00e1 nap\u011bt\u00ed p\u0159es 0,1 x \u00fanavov\u00e1 pevnost (\u03c4kh) s konstantn\u00edm a prom\u011bnn\u00fdm tahov\u00fdm nap\u011bt\u00edm. Pru\u017eina je v\u011bt\u0161inou p\u0159edpjat\u00e1 a vystavena periodick\u00fdm bobtn\u00e1n\u00edm se sinusovou k\u0159ivkou, kter\u00e9 se vyskytuj\u00ed n\u00e1hodn\u011b (stochasticky), jako je tomu v p\u0159\u00edpad\u011b zav\u011b\u0161en\u00ed vozidla.<\/p>\n<p><span style=\"text-decoration: underline;\">V z\u00e1vislosti na po\u017eadovan\u00e9m po\u010dtu zat\u011b\u017eovac\u00edch cykl\u016f \u201eN\u201c bez p\u0159eru\u0161en\u00ed se rozli\u0161uje:<\/span><\/p>\n<p>1. Oblast<a title=\"Dauerfestigkeit Wikipedia\" href=\"https:\/\/blog.federnshop.com\/cs\/unavova-sila\/\" target=\"_blank\" rel=\"noopener noreferrer\"> \u00danavov\u00e1 s\u00edla<\/a> s po\u010dtem zat\u011b\u017eovac\u00edch cykl\u016f<br \/>\nN \u2265 10<sup> 7.<\/sup> pro pru\u017einy tvarovan\u00e9 za studena<br \/>\nN \u2265 2 x 10<sup> 6.<\/sup> pro pru\u017einy tvarovan\u00e9 za tepla<br \/>\nS nap\u011bt\u00edm zdvihu men\u0161\u00edm ne\u017e \u00fanavov\u00e1 pevnost.<\/p>\n<p>2. Oblast<a title=\"Zeitfestigkeit Wikipedia\" href=\"http:\/\/de.wikipedia.org\/wiki\/W%C3%B6hlerversuch\" target=\"_blank\" rel=\"noopener noreferrer\"> \u00danavov\u00e1 s\u00edla<\/a> s po\u010dtem zat\u011b\u017eovac\u00edch cykl\u016f<br \/>\nN&lt; 10<sup> 7.<\/sup> pro pru\u017einy tvarovan\u00e9 za studena<br \/>\nN&lt; 2 x 10<sup> 6.<\/sup> pro pru\u017einy tvarovan\u00e9 za tepla<br \/>\nS nap\u011bt\u00edm zdvihu vy\u0161\u0161\u00edm ne\u017e \u00fanavov\u00e1 pevnost a men\u0161\u00edm ne\u017e \u010dasov\u00fdm nap\u011bt\u00edm<\/p>\n<p>St\u00e1vaj\u00edc\u00ed smykov\u00e9 nap\u011bt\u00ed se stanov\u00ed n\u00e1sledovn\u011b.<\/p>\n<p>Smykov\u00e9 nap\u011bt\u00ed od s\u00edly: <span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau=\\frac{8DF}{\\pi d^{3}}<\/span><\/p>\n<p>Smykov\u00e9 nap\u011bt\u00ed z dr\u00e1hy: <span class=\"katex-eq\" data-katex-display=\"false\">\\Large \\tau=\\frac{Gds}{\\pi nD^{2}}<\/span><\/p>\n<figure id=\"attachment_1762\" aria-describedby=\"caption-attachment-1762\" style=\"width: 600px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Formelzeichen_Druckfedern_komplett.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-6653 size-full\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Schwingungsschaubild_dynamisch.jpg\" alt=\"Vibra\u010dn\u00ed diagram dynamick\u00e1 tlakov\u00e1 pru\u017eina\" width=\"600\" height=\"372\" data-wp-pid=\"1762\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Schwingungsschaubild_dynamisch.jpg 600w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Schwingungsschaubild_dynamisch-300x186.jpg 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Schwingungsschaubild_dynamisch-200x124.jpg 200w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Druckfeder_Schwingungsschaubild_dynamisch-400x248.jpg 400w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><figcaption id=\"caption-attachment-1762\" class=\"wp-caption-text\">Vibra\u010dn\u00ed diagram dynamick\u00e1 tlakov\u00e1 pru\u017eina<\/figcaption><\/figure>\n<p><a href=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Formelzeichen_Druckfedern_komplett.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Popis Symbol vzorec tla\u010dn\u00e9 pru\u017einy [PDF]<\/a><\/p>\n<p>U dynamicky zat\u00ed\u017een\u00fdch tla\u010dn\u00fdch pru\u017ein se pou\u017eije opraven\u00e9 smykov\u00e9 nap\u011bt\u00ed z d\u016fvodu v\u00fdsledn\u00e9ho zv\u00fd\u0161en\u00ed nap\u011bt\u00ed. 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.<\/p>\n<p style=\"text-align: left;\"><strong>Opraven\u00e9 smykov\u00e9 nap\u011bt\u00ed<\/strong> :<\/p>\n<p style=\"text-align: left;\">\u03c4k1 = k \u00b7 \u03c41<u>&lt;<\/u> \u03c4ko<\/p>\n<p style=\"text-align: left;\">\u03c4k2 = k \u00b7 \u03c42<span style=\"text-decoration: underline;\">&lt;<\/span> \u03c4ko<\/p>\n<p style=\"text-align: left;\">kde plat\u00ed pro k (podle Bergstr\u00e4ssera)<\/p>\n<p style=\"text-align: left;\"><span class=\"katex-eq\" data-katex-display=\"false\">\\Large k=\\frac{\\frac{D}{d}+0,5}{\\frac{D}{d}-0,75}<\/span><\/p>\n<p>Povolen\u00e9 horn\u00ed nap\u011bt\u00ed \u03c4ko pro ka\u017ed\u00fd typ pru\u017einov\u00e9ho materi\u00e1lu se \u010dte z diagramu \u00fanavov\u00e9 pevnosti (Goodman\u016fv diagram) z DIN EN 13906-1 (obr. 12 a\u017e obr. 22).<\/p>\n<p>Po\u017eadovan\u00fd pracovn\u00ed zdvih nesm\u00ed p\u0159ekro\u010dit mez \u00fanavy (\u03c4kh):<\/p>\n<p style=\"text-align: left;\">\u03c4kh = \u03c4k2 &#8211; \u03c4k1<u>&lt;<\/u> \u03c4khzul<\/p>\n<p style=\"text-align: left;\">S<a href=\"https:\/\/www.federnshop.com\/de\/service-und-informationen\/federberechnung-nach-din-13906.html\" target=\"_blank\" rel=\"noopener noreferrer\"> Program v\u00fdpo\u010dtu pru\u017ein Gutekunst WinFSB<\/a> ka\u017edou vypo\u010d\u00edtanou tla\u010dnou pru\u017einu lze vypo\u010d\u00edtat tak\u00e9 pro dynamickou aplikaci. Jedin\u00e9, co mus\u00edte ud\u011blat, je aktivovat mo\u017enost \u201epermanent\u201c a \u201eshot peened\u201c. Dynamick\u00e9 hodnoty a Goodman\u016fv diagram se pot\u00e9 zobraz\u00ed v oblasti \u201eNap\u011bt\u00ed\u201c.<\/p>\n<figure id=\"attachment_759\" aria-describedby=\"caption-attachment-759\" style=\"width: 300px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/www.federnshop.com\/de\/service_informationen\/federnberechnung_din.html\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-6651 size-medium\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/\/Goodman-Diagramm_Druckfeder_dauerfest-300x244.png\" alt=\"Grafick\u00e9 WinFSB trval\u00e9\" width=\"300\" height=\"244\" data-wp-pid=\"759\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Goodman-Diagramm_Druckfeder_dauerfest-300x244.png 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Goodman-Diagramm_Druckfeder_dauerfest-200x163.png 200w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Goodman-Diagramm_Druckfeder_dauerfest.png 589w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-759\" class=\"wp-caption-text\">Goodman\u016fv diagram WinFSB odoln\u00fd<\/figcaption><\/figure>\n<figure id=\"attachment_760\" aria-describedby=\"caption-attachment-760\" style=\"width: 300px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/www.federnshop.com\/de\/service_informationen\/federnberechnung_din.html\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-6652 size-medium\" src=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/\/Goodman-Diagramm_Druckfeder_nicht_dauerfest-300x246.png\" alt=\"Grafika WinFSB nen\u00ed trval\u00e1\" width=\"300\" height=\"246\" data-wp-pid=\"760\" srcset=\"https:\/\/blog.federnshop.com\/wp-content\/uploads\/Goodman-Diagramm_Druckfeder_nicht_dauerfest-300x246.png 300w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Goodman-Diagramm_Druckfeder_nicht_dauerfest.png 600w, https:\/\/blog.federnshop.com\/wp-content\/uploads\/Goodman-Diagramm_Druckfeder_nicht_dauerfest-200x164.png 200w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-760\" class=\"wp-caption-text\">Goodman\u016fv diagram nen\u00ed trval\u00fd<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/EusjLYwYpLE\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p><strong>D\u016fle\u017eit\u00e9! <\/strong><\/p>\n<p>Rovn\u011b\u017e je t\u0159eba zkontrolovat blokov\u00e9 nap\u011bt\u00ed \u03c4czul, aby se zohlednilo superpozice nap\u011bt\u00ed v d\u016fsledku p\u0159irozen\u00fdch vibrac\u00ed t\u011blesa pru\u017einy s dynamicky zat\u00ed\u017een\u00fdmi tla\u010dn\u00fdmi pru\u017einami.<\/p>\n<p>Dynamicky nam\u00e1han\u00e9 tla\u010dn\u00e9 pru\u017einy by m\u011bly b\u00fdt p\u0159ed pou\u017eit\u00edm brokov\u00e1ny. Shot peening komprimuje povrchov\u00e9 vrstvy tak, aby bylo dosa\u017eeno v\u00fdrazn\u011b lep\u0161\u00ed \u00fanavov\u00e9 pevnosti.<\/p>\n<p>Pro \u00fanavovou pevnost tla\u010dn\u00e9 pru\u017einy jsou norm\u00e1ln\u00ed vhodn\u00e9 zejm\u00e9na pro st\u0159edn\u011b dynamick\u00e9 aplikace<a href=\"https:\/\/blog.federnshop.com\/cs\/vlastnosti-pruzinove-oceli\/\" target=\"_blank\" rel=\"noopener noreferrer\"> Pru\u017einov\u00fd ocelov\u00fd dr\u00e1t<\/a> EN 10270-1DH a SH, stejn\u011b jako vodi\u010de ventilov\u00e9 pru\u017einy EN 10270-2-VDC, -VDSiCr a -VDCrV pro vysoce dynamick\u00e9 aplikace.<\/p>\n<p><strong>Jakmile dojde ke korozi nebo t\u0159en\u00ed<a href=\"https:\/\/blog.federnshop.com\/federendlagerungen-knickgrenzen\/\"> Trn nebo ruk\u00e1v<\/a> p\u016fsob\u00ed na tla\u010dnou pru\u017einu, \u00fanavov\u00e1 pevnost ji\u017e nen\u00ed zaru\u010dena! <\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><em>Dodate\u010dn\u00e9 informace:<\/em><\/p>\n<ul>\n<li><a href=\"https:\/\/blog.federnshop.com\/cs\/druhy-napeti-pro-tazne-pruziny\/\">Druhy nap\u00ednac\u00edch pru\u017ein<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.federnshop.com\/de\/service_informationen\/federnauslegung.html\" target=\"_blank\" rel=\"noopener noreferrer\">Jarn\u00ed design<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.federnshop.com\/de\/service-und-informationen\/technische-beratung.html\" target=\"_blank\" rel=\"noopener noreferrer\">Technick\u00e9 rady od Gutekunst Federn<\/a><\/li>\n<\/ul>\n<ul>\n<li><a href=\"https:\/\/www.federnshop.com\/de\/federberechnung-auswahl.html\" target=\"_blank\" rel=\"noopener noreferrer\">V\u00fdpo\u010det Gutekunstovy pru\u017einy WinFSB<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>P\u0159ed interpretac\u00ed Kompresn\u00ed pru\u017eina V z\u00e1sad\u011b by m\u011blo b\u00fdt objasn\u011bno, zda je zam\u00fd\u0161len\u00fd typ nap\u011bt\u00ed statick\u00fd, kvazi-statick\u00fd nebo dynamick\u00fd. Statick\u00e9 nebo kvazistatick\u00e9 nap\u011bt\u00ed \u010casov\u011b konstantn\u00ed (klidov\u00e9) zat\u00ed\u017een\u00ed nebo \u010dasov\u011b prom\u011bnliv\u00e9 zat\u00ed\u017een\u00ed s celkov\u00fdm men\u0161\u00edm ne\u017e 10 000 zdvihy nebo mal\u00fdmi<\/p>\n","protected":false},"author":4,"featured_media":6653,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[919,558,920,452],"tags":[1139,1474,608,1472,780,1473,781],"class_list":["post-6646","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dratene-pruziny","category-prumysl","category-tlacne-pruziny","category-znalost","tag-dauerfestigkeit-cs","tag-dauerhubfestigkeit-cs","tag-druckfedern-cs","tag-dynamische-beanspruchung-cs","tag-federnberechnung-cs","tag-statische-beanspruchung-cs","tag-winfsb-cs"],"_links":{"self":[{"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/posts\/6646","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=6646"}],"version-history":[{"count":7,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/posts\/6646\/revisions"}],"predecessor-version":[{"id":11425,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/posts\/6646\/revisions\/11425"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/media\/6653"}],"wp:attachment":[{"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/media?parent=6646"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/categories?post=6646"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.federnshop.com\/cs\/wp-json\/wp\/v2\/tags?post=6646"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}