{"id":4980,"date":"2026-09-10T10:26:45","date_gmt":"2026-09-10T08:26:45","guid":{"rendered":"https:\/\/hamco-germany.com\/?post_type=fachbegriff&#038;p=4980"},"modified":"2026-09-10T10:42:48","modified_gmt":"2026-09-10T08:42:48","slug":"zbytkova-deformace-po-stlaceni","status":"publish","type":"fachbegriff","link":"https:\/\/hamco-germany.com\/cs\/fachbegriff\/druckverformungsrest\/","title":{"rendered":"zbytkov\u00e1 deformace po stla\u010den\u00ed"},"content":{"rendered":"<h2>To u\u017e je ale vrchol!<\/h2>\n<p>Na\u0161e pohovka b\u00fdvala kdysi opravdu kr\u00e1sn\u00e1. Sedac\u00ed plocha byla pevn\u00e1, \u010daloun\u011bn\u00ed vysok\u00e9 a bez jedin\u00e9 vr\u00e1sky.<\/p>\n<p>Potom jsme tam je\u0161t\u011b p\u00e1r minut sed\u011bli a pov\u00eddali si o tom <a href=\"https:\/\/hamco-germany.com\/cs\/technicky-termin\/teceni\/\">Te\u010den\u00ed<\/a> o plastech. Pot\u00e9 u\u017e pohovka vypadala zase p\u0159esn\u011b tak, jak v katalogu.<\/p>\n<p>Po n\u011bkolika letech u\u017e na\u0161e pohovka m\u011bla docela p\u0159esnou p\u0159edstavu o tom, kde je na\u0161e obl\u00edben\u00e9 m\u00edsto. Sedac\u00ed \u010d\u00e1st byla trvale prole\u017een\u00e1 \u2013 a to i p\u0159esto, \u017ee na\u0161e vlastn\u00ed v\u00e1ha se v \u017e\u00e1dn\u00e9m p\u0159\u00edpad\u011b odpov\u00eddaj\u00edc\u00edm zp\u016fsobem nezv\u00fd\u0161ila.<\/p>\n<p>To, co p\u0159i tom m\u016f\u017eeme pozorovat, je <strong>zbytkov\u00e1 deformace po stla\u010den\u00ed<\/strong>. Popisuje pod\u00edl d\u0159\u00edve vznikl\u00e9 deformace, kter\u00fd po odstran\u011bn\u00ed zat\u00ed\u017een\u00ed a uplynut\u00ed stanoven\u00e9 doby zotaven\u00ed trvale p\u0159etrv\u00e1v\u00e1.<\/p>\n<p><strong>T\u0159i v\u00fd\u0161ky na\u0161eho pohovky<\/strong><\/p>\n<p>A pr\u00e1v\u011b k tomu pot\u0159ebujeme t\u0159i \u00fadaje o nadmo\u0159sk\u00e9 v\u00fd\u0161ce:<\/p>\n<ul>\n<li>kter\u00e9 <strong>p\u016fvodn\u00ed v\u00fd\u0161ka H0<\/strong>: v\u00fd\u0161ka sed\u00e1ku nov\u00e9 pohovky, kter\u00e1 je v katalogu uvedena jako 45 cm,<\/li>\n<li>kter\u00e9 <strong>V\u00fd\u0161ka pod zat\u00ed\u017een\u00edm H1<\/strong>: v\u00fd\u0161ka sedadla, kter\u00e1 p\u0159i na\u0161\u00ed hmotnosti \u010din\u00ed je\u0161t\u011b 35 cm,<\/li>\n<li>kter\u00e9 <strong>V\u00fd\u0161ka H2 po uvoln\u011bn\u00ed<\/strong>: v\u00fd\u0161ka sedu, kter\u00e1 po odleh\u010den\u00ed a dostate\u010dn\u00e9 dob\u011b odpo\u010dinku \u010din\u00ed st\u00e1le 42 cm.<\/li>\n<\/ul>\n<p>P\u0159i pou\u017e\u00edv\u00e1n\u00ed pohovky se tedy sedac\u00ed plocha stla\u010dila o 10 cm. Po vst\u00e1n\u00ed z n\u00ed z\u016fstalo trvale stla\u010den\u00fdch 3 cm.<\/p>\n<p>Z toho lze vypo\u010d\u00edtat zbytkovou deformaci p\u0159i stla\u010den\u00ed:<\/p>\n<p>(H0\u2013H2)\/(H0\u2013H1) \u00d7 100<\/p>\n<p>V tomto p\u0159\u00edkladu m\u00e1 na\u0161e pohovka <strong>Zbytkov\u00e1 deformace p\u0159i stla\u010den\u00ed 30 %<\/strong>.<\/p>\n<p>\u010c\u00edm vy\u0161\u0161\u00ed je tato hodnota, t\u00edm v\u011bt\u0161\u00ed je pod\u00edl p\u016fvodn\u00ed deformace, kter\u00fd p\u0159etrv\u00e1v\u00e1 i po odstran\u011bn\u00ed zat\u00ed\u017een\u00ed. <strong>Ale v\u011bt\u0161\u00ed neznamen\u00e1 lep\u0161\u00ed \u2013 v tom je p\u0159ece pr\u00e1v\u011b ta podstata!<\/strong><\/p>\n<p><strong>Technick\u00e9 pozad\u00ed<\/strong><\/p>\n<p>Pokud je vst\u0159ikovan\u00e9 t\u011bsn\u011bn\u00ed vyrobeno z <a href=\"https:\/\/hamco-germany.com\/cs\/material\/termoplasticke-elastomery-tpe\/\">termoplastick\u00fd elastomer<\/a> je-li dlouhodob\u011b nam\u00e1h\u00e1na, m\u016f\u017ee se v z\u00e1vislosti na materi\u00e1lu, teplot\u011b a zat\u00ed\u017een\u00ed <strong>st\u00e1le v\u00edce trvale deformovat<\/strong>. \u010c\u00e1st deformace se po uvoln\u011bn\u00ed zat\u00ed\u017een\u00ed vr\u00e1t\u00ed do p\u016fvodn\u00edho stavu, jin\u00e1 \u010d\u00e1st v\u0161ak p\u0159etrv\u00e1v\u00e1.<\/p>\n<p><strong>Co tato hodnota znamen\u00e1<\/strong><\/p>\n<p>Zbytkov\u00e1 deformace po stla\u010den\u00ed je d\u016fle\u017eit\u00fdm parametrem zejm\u00e9na u m\u011bkk\u00fdch a pru\u017en\u00fdch materi\u00e1l\u016f. <strong>\u010c\u00edm ni\u017e\u0161\u00ed je tato hodnota, t\u00edm lep\u0161\u00ed je odolnost materi\u00e1lu proti deformaci.<\/strong><\/p>\n<p>To, jak velk\u00e1 bude zbytkov\u00e1 deformace po stla\u010den\u00ed, z\u00e1vis\u00ed mimo jin\u00e9 na <strong>Materi\u00e1l, teplota, doba zat\u00ed\u017een\u00ed, m\u00edra stla\u010den\u00ed a doba zotaven\u00ed<\/strong> . Hodnota v procentech je proto t\u0159eba v\u017edy posuzovat spole\u010dn\u011b s p\u0159\u00edslu\u0161n\u00fdmi zku\u0161ebn\u00edmi podm\u00ednkami.<\/p>\n<p>Na\u0161e pohovka slou\u017e\u00ed pouze k n\u00e1zorn\u00e9mu vysv\u011btlen\u00ed principu \u2013 samoz\u0159ejm\u011b se nejedn\u00e1 o zkou\u0161ku podle norem.<\/p>\n<p>U technick\u00e9ho plastov\u00e9ho d\u00edlu v\u0161ak m\u016f\u017ee b\u00fdt takov\u00fd pod\u00edl trval\u00e9 deformace rozhoduj\u00edc\u00ed: pokud toti\u017e sou\u010d\u00e1st po del\u0161\u00edm nam\u00e1h\u00e1n\u00ed nedok\u00e1\u017ee dostate\u010dn\u011b obnovit sv\u016fj p\u016fvodn\u00ed tvar, m\u016f\u017ee to m\u00edt negativn\u00ed vliv i na jej\u00ed funkci.<\/p>","protected":false},"featured_media":4981,"parent":0,"template":"","class_list":["post-4980","fachbegriff","type-fachbegriff","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/fachbegriff\/4980","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/fachbegriff"}],"about":[{"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/types\/fachbegriff"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/media\/4981"}],"wp:attachment":[{"href":"https:\/\/hamco-germany.com\/cs\/wp-json\/wp\/v2\/media?parent=4980"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}