{"id":63136,"date":"2022-08-07T04:57:53","date_gmt":"2022-08-07T09:57:53","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-the-amount-of-mechanical-power-that-can-be-acquired-from-one-sheet\/"},"modified":"2025-01-27T06:17:22","modified_gmt":"2025-01-27T11:17:22","slug":"what-is-the-amount-of-mechanical-power-that-can-be-acquired-from-one-sheet","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/what-is-the-amount-of-mechanical-power-that-can-be-acquired-from-one-sheet\/","title":{"rendered":"Mechanick\u00fd v\u00fdkon z jednoho listu pap\u00edru?"},"content":{"rendered":"<p>Mno\u017estv\u00ed mechanick\u00e9 energie, kter\u00e9 lze z\u00edskat z jednoho listu, je z\u00e1visl\u00e9 na mnoha faktorech a nelze jej jednozna\u010dn\u011b ur\u010dit bez specifikace t\u011bchto faktor\u016f.  Hovo\u0159\u00edme-li o &quot;listu&quot; obecn\u011b, m\u00e1me na mysli tenk\u00fd, ploch\u00fd objekt.  Jeho potenci\u00e1l pro z\u00edsk\u00e1n\u00ed mechanick\u00e9 energie je omezen\u00fd, a to p\u0159edev\u0161\u00edm jeho malou hmotnost\u00ed a plochou.  Z\u00edskan\u00e1 energie bude v\u017edy relativn\u011b n\u00edzk\u00e1.  Av\u0161ak v kontextu specifick\u00fdch technologi\u00ed a materi\u00e1l\u016f se mo\u017enosti m\u011bn\u00ed.<\/p>\n<h3>Mechanick\u00e1 energie z deformace listu<\/h3>\n<p>Jedn\u00edm ze zp\u016fsob\u016f z\u00edsk\u00e1n\u00ed mechanick\u00e9 energie z listu je jeho deformace.  Nap\u0159\u00edklad oh\u00fdb\u00e1n\u00edm, stla\u010dov\u00e1n\u00edm nebo natahov\u00e1n\u00edm lze ukl\u00e1dat potenci\u00e1ln\u00ed energii, kter\u00e1 se n\u00e1sledn\u011b m\u016f\u017ee p\u0159em\u011bnit na energii kinetickou.  Mno\u017estv\u00ed takto z\u00edskan\u00e9 energie z\u00e1vis\u00ed na materi\u00e1lov\u00fdch vlastnostech listu (nap\u0159. Young\u016fv modul pru\u017enosti), jeho tlou\u0161\u0165ce, rozm\u011brech a stupni deformace.  Tento princip se vyu\u017e\u00edv\u00e1 nap\u0159\u00edklad v hodink\u00e1ch s p\u00e9rov\u00fdm mechanismem, kde se energie uvol\u0148uje postupn\u011b.  Av\u0161ak i v tomto p\u0159\u00edpad\u011b je celkov\u00e9 mno\u017estv\u00ed energie velmi mal\u00e9.<\/p>\n<h3>Energie z vibrac\u00ed listu<\/h3>\n<p>List m\u016f\u017ee b\u00fdt tak\u00e9 zdrojem energie prost\u0159ednictv\u00edm vibrac\u00ed.  Vibrace mohou b\u00fdt vyvol\u00e1ny r\u016fzn\u00fdmi zp\u016fsoby, nap\u0159\u00edklad pomoc\u00ed piezoelektrick\u00e9ho efektu nebo vn\u011bj\u0161\u00edm zdrojem energie.  Piezoelektrick\u00e9 materi\u00e1ly generuj\u00ed elektrick\u00fd n\u00e1boj p\u0159i mechanick\u00e9 deformaci a naopak.  V tomto p\u0159\u00edpad\u011b by list musel b\u00fdt vyroben z piezoelektrick\u00e9ho materi\u00e1lu, a energie by byla z\u00edsk\u00e1na z p\u0159em\u011bny mechanick\u00e9 energie vibrac\u00ed na energii elektrickou, a n\u00e1sledn\u011b na energii mechanickou pomoc\u00ed motoru.  Mno\u017estv\u00ed energie z\u00edskan\u00e9 z vibrac\u00ed je z\u00e1visl\u00e9 na amplitud\u011b a frekvenci vibrac\u00ed, stejn\u011b jako na vlastnostech materi\u00e1lu listu.<\/p>\n<h3>Srovn\u00e1n\u00ed r\u016fzn\u00fdch materi\u00e1l\u016f a metod<\/h3>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Materi\u00e1l<\/th>\n<th>Metoda z\u00edsk\u00e1n\u00ed energie<\/th>\n<th>Odhadovan\u00e9 mno\u017estv\u00ed energie (p\u0159ibli\u017en\u00e9)<\/th>\n<th>Pozn\u00e1mky<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Pap\u00edr<\/td>\n<td>Deformace<\/td>\n<td>&lt; 1 mJ<\/td>\n<td>Velmi n\u00edzk\u00e1 energie<\/td>\n<\/tr>\n<tr>\n<td>Tenk\u00e1 kovov\u00e1 folie<\/td>\n<td>Deformace<\/td>\n<td>~ 1-10 mJ<\/td>\n<td>Z\u00e1le\u017e\u00ed na tlou\u0161\u0165ce a materi\u00e1lu<\/td>\n<\/tr>\n<tr>\n<td>Piezoelektrick\u00fd materi\u00e1l<\/td>\n<td>Vibrace<\/td>\n<td>Z\u00e1le\u017e\u00ed na velikosti a materi\u00e1lu, m\u016f\u017ee dosahovat vy\u0161\u0161\u00edch hodnot<\/td>\n<td>Vy\u017eaduje speci\u00e1ln\u00ed materi\u00e1l a syst\u00e9m<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Limity a praktick\u00e9 vyu\u017eit\u00ed<\/h3>\n<p>V\u011bt\u0161inou je mno\u017estv\u00ed mechanick\u00e9 energie z\u00edskateln\u00e9 z jednoho listu zanedbateln\u00e9 pro praktick\u00e9 vyu\u017eit\u00ed.  V\u00fdjimkou mohou b\u00fdt specifick\u00e9 aplikace s vyu\u017eit\u00edm vysoce v\u00fdkonn\u00fdch piezoelektrick\u00fdch materi\u00e1l\u016f a sofistikovan\u00fdch syst\u00e9m\u016f pro sb\u011br a konverzi energie.  Z\u00edsk\u00e1v\u00e1n\u00ed energie z jednotliv\u00fdch list\u016f se v praxi nepou\u017e\u00edv\u00e1, je to sp\u00ed\u0161e teoretick\u00e1 \u00favaha.  Pro z\u00edsk\u00e1n\u00ed v\u011bt\u0161\u00edho mno\u017estv\u00ed energie je nutn\u00e9 pou\u017e\u00edt v\u011bt\u0161\u00ed plochu nebo mno\u017estv\u00ed list\u016f.  Pou\u017eit\u00ed piezoelektrick\u00fdch materi\u00e1l\u016f vy\u017eaduje i technologick\u00e9 za\u0159\u00edzen\u00ed pro p\u0159em\u011bnu z\u00edskan\u00e9 elektrick\u00e9 energie na mechanickou.<\/p>\n<p>Mno\u017estv\u00ed mechanick\u00e9 energie, kter\u00e9 lze z\u00edskat z jednoho listu, je tedy siln\u011b z\u00e1visl\u00e9 na pou\u017eit\u00e9m materi\u00e1lu a metod\u011b.  Obecn\u011b se jedn\u00e1 o velmi mal\u00e9 mno\u017estv\u00ed energie, kter\u00e9 je pro v\u011bt\u0161inu praktick\u00fdch aplikac\u00ed nedostate\u010dn\u00e9.  Pouze v specifick\u00fdch situac\u00edch s vyu\u017eit\u00edm pokro\u010dil\u00fdch technologi\u00ed a materi\u00e1l\u016f m\u016f\u017ee b\u00fdt z\u00edsk\u00e1n\u00ed energie z listu relevantn\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mno\u017estv\u00ed mechanick\u00e9 energie, kter\u00e9 lze z\u00edskat z jednoho listu, je z\u00e1visl\u00e9 na mnoha faktorech a nelze jej jednozna\u010dn\u011b ur\u010dit bez specifikace t\u011bchto faktor\u016f. Hovo\u0159\u00edme-li o &quot;listu&quot; obecn\u011b, m\u00e1me na mysli tenk\u00fd, ploch\u00fd objekt. Jeho potenci\u00e1l pro z\u00edsk\u00e1n\u00ed mechanick\u00e9 energie je omezen\u00fd, a to p\u0159edev\u0161\u00edm jeho malou hmotnost\u00ed a plochou. Z\u00edskan\u00e1 energie bude v\u017edy relativn\u011b n\u00edzk\u00e1.<\/p>\n","protected":false},"author":1,"featured_media":590,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-63136","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/63136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/comments?post=63136"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/63136\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/590"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=63136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=63136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=63136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}