{"id":86,"date":"2021-12-20T12:18:36","date_gmt":"2021-12-20T12:18:36","guid":{"rendered":"https:\/\/bridge2.hiroshima-u.ac.jp\/wordp\/?page_id=86"},"modified":"2025-05-26T10:25:25","modified_gmt":"2025-05-26T02:25:25","slug":"about","status":"publish","type":"page","link":"https:\/\/bridge2.hiroshima-u.ac.jp\/wordp\/?page_id=86","title":{"rendered":"About"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-blue-color has-text-color\"><strong>[Research Interests<\/strong>]<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"400\" src=\"https:\/\/bridge2.hiroshima-u.ac.jp\/wordp\/wp-content\/uploads\/2023\/11\/chaos-br2.jpg\" alt=\"\" class=\"wp-image-629\" style=\"width:489px;height:auto\" srcset=\"https:\/\/bridge2.hiroshima-u.ac.jp\/wordp\/wp-content\/uploads\/2023\/11\/chaos-br2.jpg 400w, https:\/\/bridge2.hiroshima-u.ac.jp\/wordp\/wp-content\/uploads\/2023\/11\/chaos-br2-300x300.jpg 300w, https:\/\/bridge2.hiroshima-u.ac.jp\/wordp\/wp-content\/uploads\/2023\/11\/chaos-br2-150x150.jpg 150w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Computational Mechanics Including:<br>Development of New High-Order Numerical Methods with Optimal Accuracy for Partial Differential Equations<br>New Finite Element Algorithms for Symmetric Structures, Structural Dynamics and Discrete(Finite) &amp; Continuum(Infinity) Mechanics Problems<br>Time\u2212Integration Methods for Elasto-dynamics Including Chaotic-phenomena Problems<br>Nonlinear Problems with Finite Thermal, Elastic and Plastic Strains, Nonlinear Problems with Group-theoretic Bifurcation with Symmetric Group (with foldable\/Deployable, Origami, Post-buckling)<br>Numerical Simulation of Different Engineering Problems<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-blue-color has-text-color\">[<strong>\u69cb\u9020\u5b89\u5b9a\u6027<\/strong>] <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5ea7\u5c48\u3084\u30ab\u30aa\u30b9\u73fe\u8c61\u306f\u300c\u5206\u5c90\u300d\u3068\u547c\u3070\u308c\u3001\u69cb\u9020\u7269\u306e\u4e0d\u5b89\u5b9a\u6027\u3092\u4f34\u3046\u975e\u7dda\u5f62\u529b\u5b66\u554f\u984c\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted has-blue-color has-text-color\">\u69cb\u9020\u5de5\u5b66\u3068\u975e\u7dda\u5f62\u79d1\u5b66\u306e\u4e21\u65b9\u306b\u95a2\u308f\u308b<strong>\u69cb\u9020\u5b89\u5b9a\u6027<\/strong>\u3092\u7814\u7a76\u3057\u3066\u3044\u307e\u3059\u3002<br>\u7279\u306b\u3001\u69cb\u9020\u7269\u304c\u5d29\u58ca\u3059\u308b\u4e8b\u8c61\u306f'<strong>catastrophy<\/strong>' \u3068\u547c\u3070\u308c\u307e\u3059\u3002<br>\u4f8b\u3048\u3070\u3001\u7403\u4f53\u3084\u5186\u7b52\u30b7\u30a7\u30eb\u306a\u3069\u306e\u5f3e\u6027\u69cb\u9020\u7cfb\u304c\u4e9c\u81e8\u754c\u7684\u306b\u5b89\u5b9a\u6027\u3092\u5931\u3046\u554f\u984c\u306f\u5927\u5207\u3067\u3059\u3002<br>\u305d\u306e\u969b\u3001'\u5ea7\u5c48'\u3068\u547c\u3070\u308c\u3001\u5bfe\u79f0\u6027\u3082\u5931\u3044\u307e\u3059(<strong>Symmetry-breaking<\/strong>)\u3002<br>\u3053\u306e\u3088\u3046\u306a\u69cb\u9020\u306f\u3001\u6b20\u9665\u3084\u885d\u6483\u304c\u7dda\u5f62\u5b89\u5b9a\u6027\u306e\u3057\u304d\u3044\u5024\u3092\u306f\u308b\u304b\u306b\u4e0b\u56de\u308b\u8377\u91cd\u70b9\u3067\u5ea7\u5c48\u5d29\u58ca\u3092\u5f15\u304d\u8d77\u3053\u3059\u305f\u3081\u3001\u8a2d\u8a08\u3068\u5b9f\u73fe\u8c61\u306e\u4e88\u6e2c\u304c\u96e3\u3057\u3044\u3067\u3059\u3002<br>\u69cb\u9020\u7684\u4e0d\u5b89\u5b9a\u73fe\u8c61\u3078\u306e\u95a2\u5fc3\u306f\u3001\u5b9f\u7528\u7684\u306a\u5b89\u5b9a\u6027\u8a55\u4fa1\u306b\u306f\u300c\u5206\u5c90\u89e3\u6790\u300d\u3001\u300c\u5e7e\u4f55\u5b66\u7684\u975e\u7dda\u5f62\u306e\u8a08\u7b97\u529b\u5b66\u300d\u3001\u300c\u78ba\u7387\u8ad6\u7684\u30a2\u30d7\u30ed\u30fc\u30c1\u300d\u3068\u300c\u4e0d\u5b8c\u5168\u6027\u611f\u5ea6\u306b\u3088\u308b\u5206\u6790\u300d\u304c\u5fc5\u8981\u3067\u3059\u3002<br>\u3053\u3053\u3067\u3001\u5ea7\u5c48\u3057\u3066\u3044\u306a\u3044\u5ea7\u5c48\u30d1\u30bf\u30fc\u30f3\u3068\u5b8c\u5168\u306b\u767a\u9054\u3057\u305f\u5ea7\u5c48\u30d1\u30bf\u30fc\u30f3\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u7b49\u3057\u304f\u3001\u5c40\u6240\u7684\u306a\u72b6\u614b\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u6301\u3061\u3001\u5b89\u5b9a\u3057\u305f\u72b6\u614b\u3068\u4e0d\u5b89\u5b9a\u306a\u72b6\u614b\u304c\u86c7\u884c\u3059\u308b\u8377\u91cd-\u305f\u308f\u307f\u7d4c\u8def\u4e0a\u3067\u5ea6\u3005\u8907\u6570\u767a\u751f\u3057\u307e\u3059\u3002<br>\u6700\u65b0\u6280\u8853\u306f\u3001\u7406\u8ad6\u7684\u3001\u6570\u5024\u7684\u3001\u5b9f\u9a13\u7684\u65b9\u6cd5\u3067\u8abf\u3079\u3089\u308c\u3066\u3044\u307e\u3059\u3002<br>\u6709\u9650\u8981\u7d20\u8fd1\u4f3c\u306e\u5f27\u9577\u6cd5\uff08\u30d1\u30b9\u8ffd\u8de1\uff09\u306f\u3001\u8907\u96d1\u306a\u5c40\u6240\u72b6\u614b\u306e\u69d8\u3005\u306a\u91e3\u5408\u3044\u7d4c\u8def\u3092\u6709\u3057\u307e\u3059\u3002<br>\u591a\u91cd\u7279\u7570\u70b9\u3092\u6301\u3064\u3088\u3046\u306a\u978d\u72b6\u578b\u306e\u5168\u30dd\u30c6\u30f3\u30b7\u30e3\u30eb\u30a8\u30cd\u30eb\u30ae\u30fc\u89b3\u70b9\u3001\u30aa\u30ea\u30ac\u30df\u3092\u7528\u3044\u305f\u5186\u7b52\u5ea7\u5c48\u554f\u984c\u3001\u65b0\u3057\u3044\u5c55\u958b\u69cb\u9020\u306e\u8a2d\u8a08\u5275\u751f\u3001\u5bfe\u79f0\u6027\u7834\u308c\u4e8b\u8c61\u30e2\u30c7\u30eb\u3001\u5e7e\u4f55\u5b66\u7684\u5bfe\u79f0\u6027\u3068\u69cb\u9020\u5f37\u5ea6\u306e\u95a2\u4fc2\u3001\u5f8c\u5ea7\u5c48\u30e1\u30ab\u30cb\u30ba\u30e0\u306a\u3069\u3092\u63a2\u6c42\u3057\u3066\u3044\u307e\u3059\u3002<br><br>\u305d\u306e\u4ed6\u306b\u3001\u6298\u308a\u7d19\u3092\u30d2\u30f3\u30c8\u3068\u3057\u305f\u5468\u671f\u69cb\u9020\u3068\u5c55\u958b\u3059\u308b\u591a\u91cd\u6298\u7573\u307f\u69cb\u9020\u4f53\u3084\u30b9\u30b1\u30fc\u30eb\u554f\u984c\u306b\u304a\u3051\u308b\u5e7e\u4f55\u69cb\u9020\u306e\u5468\u671f\u6027\u3068\u5f37\u5ea6\u306e\u95a2\u4fc2\u3092(\u975e\u7dda\u5f62)\u5e73\u8861\u554f\u984c\u306b\u304a\u3051\u308b\u69cb\u9020\u6700\u9069\u5316\u3084\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u5275\u9020\u4e2d\u3067\u3059\u3002<br><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">[<strong>Structural stability<\/strong>] <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Buckling and chaos phenomena are called &#8220;<strong>bifurcation<\/strong>&#8221; and are nonlinear mechanical problems with <em>structural instability<\/em>.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted has-blue-color has-text-color\">Mainly on \"<strong>structural stability<\/strong>\" involved in both<strong> structural engineering<\/strong> and <strong>nonlinear science<\/strong>. In particular, the phenomenon of structure collapse is called '<strong>Catastrophe<\/strong>'.\nFor example, the problem of sub-critically <em>unstable elastic structural system<\/em>s such as spheres and cylindrical shells is serious. At that time, it is called '<strong><em>buckling<\/em><\/strong>' and<strong><em> loses symmetry<\/em><\/strong> (<strong>Symmetry-breaking<\/strong>).\nSuch structures are difficult to design and predict actual phenomena because defects and impacts cause buckling collapse at load points well below the linear stability threshold.\nInterest in structural instability requires a \"<strong>stochastic approach<\/strong>\" and an \"<strong>incompleteness sensitivity analysis<\/strong>\" for practical stability assessment.\nHere, the energy of the non-buckling pattern and the fully developed<em> buckling pattern<\/em> are equal, they have the energy of the local state, and the stable state and the unstable state meandering load-often on the deflection path. It occurs more than once.\nThe latest technology is being investigated analytically, numerically and experimentally.\nThe arc length method (path tracking) of <strong>finite element approximation<\/strong> has various equilibrium paths of complex local states.\nSecond, the numerical implementation of the saddle-shaped energy method predicts the energy barriers in which the buckling process occurs.\nRecent developments also suggest ways to reproduce computationally and experimentally.<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>[Research Interests] Computational Mechanics Including:Development of New High-Order Numerical Methods with Op [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":946,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-86","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/bridge2.hiroshima-u.ac.jp\/wordp\/index.php?rest_route=\/wp\/v2\/pages\/86","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bridge2.hiroshima-u.ac.jp\/wordp\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/bridge2.hiroshima-u.ac.jp\/wordp\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/bridge2.hiroshima-u.ac.jp\/wordp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bridge2.hiroshima-u.ac.jp\/wordp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=86"}],"version-history":[{"count":17,"href":"https:\/\/bridge2.hiroshima-u.ac.jp\/wordp\/index.php?rest_route=\/wp\/v2\/pages\/86\/revisions"}],"predecessor-version":[{"id":965,"href":"https:\/\/bridge2.hiroshima-u.ac.jp\/wordp\/index.php?rest_route=\/wp\/v2\/pages\/86\/revisions\/965"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bridge2.hiroshima-u.ac.jp\/wordp\/index.php?rest_route=\/wp\/v2\/media\/946"}],"wp:attachment":[{"href":"https:\/\/bridge2.hiroshima-u.ac.jp\/wordp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=86"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}