{"id":6212,"date":"2026-10-19T09:48:38","date_gmt":"2026-10-19T09:48:38","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-velaverkfraedi-heimir-tryggvason\/"},"modified":"2026-10-19T09:48:38","modified_gmt":"2026-10-19T09:48:38","slug":"doktorsvorn-i-velaverkfraedi-heimir-tryggvason","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-velaverkfraedi-heimir-tryggvason\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed v\u00e9laverkfr\u00e6\u00f0i &#8211; Heimir Tryggvason"},"content":{"rendered":"<div class=\"field-items\">\n<div class=\"field-item even\" property=\"content:encoded\">\n<p><a href=\"https:\/\/livestream.com\/hi\/doktorsvornheimirtryggvason\"><strong>Streymi<\/strong><\/a><\/p>\n<p><strong>Doktorsefni:<\/strong>\u00a0Heimir Tryggvason<\/p>\n<p><strong>Heiti ritger\u00f0ar:<\/strong>\u00a0Notkun snjallefna \u00ed gervif\u00e6tur &#8211; Breytileg st\u00edfni bygg\u00f0 \u00e1 virkum efniseiginleikum<br \/> (Smart Material Prosthetic Ankle &#8211; Employing material properties for variable stiffness)<\/p>\n<p><strong>Andm\u00e6lendur:<\/strong><strong><br \/> <\/strong>Dr. Peter G. Adamczyk, lektor vi\u00f0 University of Wisconsin, Bandar\u00edkjunum<br \/> Dr. Elliott J. Rouse, lektor vi\u00f0 University of Michigan, Bandar\u00edkjunum<\/p>\n<p><strong>Lei\u00f0beinandi:<\/strong>\u00a0Dr. Fj\u00f3la J\u00f3nsd\u00f3ttir, pr\u00f3fessor vi\u00f0 I\u00f0na\u00f0arverkfr\u00e6\u00f0i-, v\u00e9laverkfr\u00e6\u00f0i- og t\u00f6lvunarfr\u00e6\u00f0ideild\u00a0H\u00e1sk\u00f3la \u00cdslands<\/p>\n<p><strong>Einnig \u00ed doktorsnefnd:<\/strong><strong><br \/> <\/strong>Dr. Sigur\u00f0ur Brynj\u00f3lfsson, pr\u00f3fessor vi\u00f0 I\u00f0na\u00f0arverkfr\u00e6\u00f0i-, v\u00e9laverkfr\u00e6\u00f0i- og t\u00f6lvunarfr\u00e6\u00f0ideild H\u00e1sk\u00f3la \u00cdslands<br \/> Dr. Sigr\u00fan Nanna Karlsd\u00f3ttir, pr\u00f3fessor vi\u00f0 I\u00f0na\u00f0arverkfr\u00e6\u00f0i-, v\u00e9laverkfr\u00e6\u00f0i- og t\u00f6lvunarfr\u00e6\u00f0ideild H\u00e1sk\u00f3la \u00cdslands<br \/> Magn\u00fas Oddsson, ranns\u00f3knarverkfr\u00e6\u00f0ingur hj\u00e1 \u00d6ssuri hf.<\/p>\n<p><strong>Doktorsv\u00f6rn st\u00fdrir:<\/strong>\u00a0Dr. R\u00fanar Unn\u00fe\u00f3rsson, pr\u00f3fessor og deildarforseti I\u00f0na\u00f0arverkfr\u00e6\u00f0i-, v\u00e9laverkfr\u00e6\u00f0i- og t\u00f6lvunarfr\u00e6\u00f0ideildar H\u00e1sk\u00f3la \u00cdslands<\/p>\n<p><strong>\u00a0<\/strong><\/p>\n<p><strong>\u00c1grip<\/strong><\/p>\n<p>Innbl\u00e1sturinn a\u00f0 \u00feessari ranns\u00f3kn er n\u00e1tt\u00farulegur breytileiki \u00ed st\u00edfni l\u00edffr\u00e6\u00f0ilegs \u00f6kkla vi\u00f0 mismunandi hreyfingu. Markmi\u00f0i\u00f0 er a\u00f0 n\u00e1 fram breytilegri st\u00edfni gervif\u00f3tar \u00ed sv\u00f6run vi\u00f0 \u00e1lagi me\u00f0 virkum efniseiginleikum snjallefna. \u00deessi ritger\u00f0 l\u00fdsir h\u00f6nnun og ger\u00f0 frumger\u00f0ar \u00e1 k\u00faplingu sem n\u00fdtir s\u00e9rstaka sker\u00feykkjandi efniseiginleika v\u00f6kva (e. shear thickening fluids) sem felast \u00ed skyndilegri, \u00f3samfelldri breytingu \u00e1 seigju v\u00f6kvans. Hra\u00f0ah\u00e1\u00f0 st\u00edfni n\u00e6st me\u00f0 kerfi af hli\u00f0- og ra\u00f0tengdri fj\u00f6\u00f0run, \u00fear sem k\u00faplingin er notu\u00f0 vi\u00f0 yfirf\u00e6rslu krafta \u00ed kerfinu. \u00deekkt h\u00f6nnun \u00e1 gervif\u00e6ti er endurb\u00e6tt me\u00f0 k\u00faplingu sem breytir virkni f\u00f3tarins. St\u00edfni f\u00f3tarins veltur \u00feannig \u00e1 hra\u00f0a hreyfingar notandans, allt fr\u00e1 \u00fev\u00ed a\u00f0 veita dempandi stu\u00f0ning \u00e1 mj\u00f6g h\u00e6gum g\u00f6nguhra\u00f0a, a\u00f0 \u00fev\u00ed a\u00f0 veita fja\u00f0randi endurgj\u00f6f \u00e1 venjulegum g\u00f6nguhra\u00f0a.<br \/> Mikilv\u00e6gt markmi\u00f0 \u00ed h\u00f6nnun gervif\u00f3ta er a\u00f0 h\u00e1marka orkun\u00fdtni \u00feeirra. Markmi\u00f0 \u00feessarar vinnu er a\u00f0 hanna gervif\u00f3t sem veitir mj\u00fakan stu\u00f0ning vi\u00f0 h\u00e6gar hreyfingar, \u00e1n \u00feess a\u00f0 f\u00f3rna \u00feeirri orkun\u00fdtni sem hj\u00e1lpar notandanum \u00ed venjulegri g\u00f6ngu. Virkni gervif\u00f3tarins var greind me\u00f0 einingara\u00f0fer\u00f0 (e. FEM) til a\u00f0 greina breytur og st\u00e6r\u00f0ir sem nota\u00f0ar eru \u00ed endurb\u00e6ttu h\u00f6nnunina. K\u00faplingin var \u00fer\u00f3u\u00f0 og eiginleikar hennar sta\u00f0festir me\u00f0 pr\u00f3funum. Frumger\u00f0 gervif\u00f3tar var h\u00f6nnu\u00f0 og sm\u00ed\u00f0u\u00f0 og hra\u00f0ah\u00e1\u00f0 st\u00edfni m\u00e6ld. Ennfremur voru framkv\u00e6mdar notendapr\u00f3fanir og g\u00f6ngugreining \u00e1 mismunandi g\u00f6nguhra\u00f0a \u00fear sem frumger\u00f0in var borin saman vi\u00f0 upprunalega gervif\u00f3tinn. Ni\u00f0urst\u00f6\u00f0ur pr\u00f3fana sta\u00f0festu hra\u00f0ah\u00e1\u00f0a st\u00edfni n\u00fdrrar h\u00f6nnunar.<\/p>\n<p><strong>Um doktorsefni\u00f0<\/strong><\/p>\n<p>Heimir Tryggvason er f\u00e6ddur 1977. Hann lauk B.Sc. gr\u00e1\u00f0u \u00ed v\u00e9la- og i\u00f0na\u00f0arverkfr\u00e6\u00f0i fr\u00e1 H\u00e1sk\u00f3la \u00cdslands \u00e1ri\u00f0 2003 og M.Sc. gr\u00e1\u00f0u \u00ed v\u00e9laverkfr\u00e6\u00f0i fr\u00e1 Danmarks Tekniske Universitet \u00ed Kaupmannah\u00f6fn \u00e1ri\u00f0 2004. Heimir h\u00f3f doktorsn\u00e1m sitt vi\u00f0 H\u00e1sk\u00f3la \u00cdslands, undir lei\u00f0s\u00f6gn Fj\u00f3lu J\u00f3nsd\u00f3ttur pr\u00f3fessors, \u00e1ri\u00f0 2016.<\/p>\n<\/div><\/div>","protected":false},"featured_media":4976,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_phd_date_start":"2021-06-15T14:00:00+00:00","_phd_date_end":"2021-06-15T16:00:00+00:00","_phd_location":"Askja Stofa 132","_phd_admission":"A\u00f0gangur \u00f3keypis","_phd_thesis_title":"Notkun snjallefna \u00ed gervif\u00e6tur - Breytileg st\u00edfni bygg\u00f0 \u00e1 virkum efniseiginleikum (Smart Material Prosthetic Ankle - Employing material properties for variable stiffness)","_phd_source_url":"https:\/\/gamli.hi.is\/vidburdir\/doktorsvorn_i_velaverkfraedi_heimir_tryggvason","_phd_source_node_id":"375661","_phd_source_type":"vidburdir","_phd_member_id":735,"footnotes":""},"phd_school":[108,93],"phd_discipline":[110],"class_list":["post-6212","phd_defence","type-phd_defence","status-publish","has-post-thumbnail","hentry","phd_school-idnadarverkfraedi-velaverkfraedi-og-tolvunarfraedideild","phd_school-verkfraedi-og-natturuvisindasvid","phd_discipline-phd-i-velaverkfraedi"],"_links":{"self":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence\/6212","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence"}],"about":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/types\/phd_defence"}],"version-history":[{"count":0,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence\/6212\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media\/4976"}],"wp:attachment":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media?parent=6212"}],"wp:term":[{"taxonomy":"phd_school","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_school?post=6212"},{"taxonomy":"phd_discipline","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_discipline?post=6212"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}