{"id":2671,"global_id":"wordpress.cels.anl.gov\/lans-seminars?id=2671","global_id_lineage":["wordpress.cels.anl.gov\/lans-seminars?id=2671"],"author":"43","status":"publish","date":"2020-10-12 08:49:30","date_utc":"2020-10-12 13:49:30","modified":"2020-10-15 07:57:58","modified_utc":"2020-10-15 12:57:58","url":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/event\/virtual-lans-seminar-15\/","rest_url":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/tribe\/events\/v1\/events\/2671","title":"Virtual LANS Seminar","description":"<p><strong>Seminar Title<\/strong>: Variational Phase-Field Models of Fracture<br \/>\n<strong>Speaker<\/strong>: Blaise Bourdin, A.K. &amp; Shirley Barton Professor of Mathematics, Louisiana State University<\/p>\n<p><strong>Date\/Time<\/strong>: October 20, 2020 \/ 11:00 AM \u2013 12:00 PM<br \/>\n<strong>Location<\/strong>: See meeting URL on the <a href=\"https:\/\/wordpress.cels.anl.gov\/cels-seminars\/event\/virtual-lans-seminar-12\/\">cels-seminars website<\/a> (requires Argonne login)<\/p>\n<p><strong>Host:<\/strong> Stefan Wild<\/p>\n<hr \/>\n<p><strong>Description<\/strong>: Phase-field models of fracture, which I developed as numerical techniques for Francfort and Marigo&#8217;s reformulation of Griffith fracture have become some of the most popular techniques in fracture mechanics. In this talk, I will quickly derive Francfort and Marigo&#8217;s variational approach to fracture and its phase-field approximation. I will then discuss their numerical implementation, illustrated with quantitative validation and verification examples on a broad range of applications. Finally, I will discuss recent extensions, the computational challenges that they pose, and the insight they provide on challenging topics such as crack nucleation in quasi-brittle materials and propagation in heterogeneous materials.<\/p>\n<p>Blaise Bourdin, A.K. &amp; Shirley Barton Professor of Mathematics, Louisiana State University<\/p>\n<p><u><a href=\"http:\/\/www.math.lsu.edu\/~bourdin\">http:\/\/www.math.lsu.edu\/~bourdin<\/a><\/u><\/p>\n<p><em>Please note that the meeting URL for this event can be seen on the <\/em><a href=\"https:\/\/wordpress.cels.anl.gov\/cels-seminars\/event\/virtual-lans-seminar-12\/\">cels-seminars website<\/a><em>, which requires an Argonne login.<\/em><\/p>","excerpt":"","slug":"virtual-lans-seminar-15","image":false,"all_day":false,"start_date":"2020-10-20 11:00:00","start_date_details":{"year":"2020","month":"10","day":"20","hour":"11","minutes":"00","seconds":"00"},"end_date":"2020-10-20 12:00:00","end_date_details":{"year":"2020","month":"10","day":"20","hour":"12","minutes":"00","seconds":"00"},"utc_start_date":"2020-10-20 16:00:00","utc_start_date_details":{"year":"2020","month":"10","day":"20","hour":"16","minutes":"00","seconds":"00"},"utc_end_date":"2020-10-20 17:00:00","utc_end_date_details":{"year":"2020","month":"10","day":"20","hour":"17","minutes":"00","seconds":"00"},"timezone":"America\/Chicago","timezone_abbr":"CDT","cost":"","cost_details":{"currency_symbol":"","currency_code":"","currency_position":"prefix","values":[]},"website":"","show_map":false,"show_map_link":false,"hide_from_listings":false,"sticky":false,"featured":false,"categories":[{"name":"Seminar","slug":"seminar","term_group":0,"term_taxonomy_id":2,"taxonomy":"tribe_events_cat","description":"","parent":0,"count":762,"filter":"raw","id":2,"urls":{"self":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/tribe\/events\/v1\/categories\/2","collection":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/tribe\/events\/v1\/categories"}}],"tags":[],"venue":{"id":2673,"author":"43","status":"publish","date":"2020-10-12 08:49:30","date_utc":"2020-10-12 13:49:30","modified":"2020-10-12 08:49:30","modified_utc":"2020-10-12 13:49:30","url":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/venue\/https-wordpress-cels-anl-gov-cels-seminars-event-virtual-lans-seminar-27-2\/","venue":"https:\/\/wordpress.cels.anl.gov\/cels-seminars\/event\/virtual-lans-seminar-27\/","slug":"https-wordpress-cels-anl-gov-cels-seminars-event-virtual-lans-seminar-27-2","json_ld":{"@type":"Place","name":"https:\/\/wordpress.cels.anl.gov\/cels-seminars\/event\/virtual-lans-seminar-27\/","description":"","url":"","address":{"@type":"PostalAddress"},"telephone":"","sameAs":""},"show_map":true,"show_map_link":true,"global_id":"wordpress.cels.anl.gov\/lans-seminars?id=2673","global_id_lineage":["wordpress.cels.anl.gov\/lans-seminars?id=2673"]},"organizer":[],"custom_fields":[],"json_ld":{"@context":"http:\/\/schema.org","@type":"Event","name":"Virtual LANS Seminar","description":"&lt;p&gt;Seminar Title: Variational Phase-Field Models of Fracture Speaker: Blaise Bourdin, A.K. &amp; Shirley Barton Professor of Mathematics, Louisiana State University Date\/Time: October 20, 2020 \/ 11:00 AM \u2013 12:00 PM Location: See meeting URL on the cels-seminars website (requires Argonne &hellip; &lt;a href=&quot;https:\/\/wordpress.cels.anl.gov\/lans-seminars\/event\/virtual-lans-seminar-15\/&quot;&gt;Continue reading &lt;span class=&quot;meta-nav&quot;&gt;&rarr;&lt;\/span&gt;&lt;\/a&gt;&lt;\/p&gt;\\n","url":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/event\/virtual-lans-seminar-15\/","eventAttendanceMode":"https:\/\/schema.org\/OfflineEventAttendanceMode","eventStatus":"https:\/\/schema.org\/EventScheduled","startDate":"2020-10-20T11:00:00-05:00","endDate":"2020-10-20T12:00:00-05:00","location":{"@type":"Place","name":"https:\/\/wordpress.cels.anl.gov\/cels-seminars\/event\/virtual-lans-seminar-27\/","description":"","url":"","address":{"@type":"PostalAddress"},"telephone":"","sameAs":""},"performer":"Organization"}}