Deprecated: TEC\Events_Pro\Custom_Tables\V1\WP_Query\Modifiers\Events_Not_Recurring_Custom_Tables_Query_Modifier::applies_to(): Implicitly marking parameter $query as nullable is deprecated, the explicit nullable type must be used instead in /home/seasevents/public_html/wp-content/plugins/events-calendar-pro/src/Events_Pro/Custom_Tables/V1/WP_Query/Modifiers/Events_Not_Recurring_Custom_Tables_Query_Modifier.php on line 61
Warning: Cannot modify header information - headers already sent by (output started at /home/seasevents/public_html/wp-content/plugins/events-calendar-pro/src/Events_Pro/Custom_Tables/V1/WP_Query/Modifiers/Events_Not_Recurring_Custom_Tables_Query_Modifier.php:61) in /home/seasevents/public_html/wp-content/plugins/the-events-calendar/src/Tribe/Views/V2/iCalendar/iCalendar_Handler.php on line 263
Warning: Cannot modify header information - headers already sent by (output started at /home/seasevents/public_html/wp-content/plugins/events-calendar-pro/src/Events_Pro/Custom_Tables/V1/WP_Query/Modifiers/Events_Not_Recurring_Custom_Tables_Query_Modifier.php:61) in /home/seasevents/public_html/wp-content/plugins/disable-xml-rpc-pingback/disable-xml-rpc-pingback.php on line 51
Warning: Cannot modify header information - headers already sent by (output started at /home/seasevents/public_html/wp-content/plugins/events-calendar-pro/src/Events_Pro/Custom_Tables/V1/WP_Query/Modifiers/Events_Not_Recurring_Custom_Tables_Query_Modifier.php:61) in /home/seasevents/public_html/wp-content/plugins/the-events-calendar/src/Tribe/iCal.php on line 511
Warning: Cannot modify header information - headers already sent by (output started at /home/seasevents/public_html/wp-content/plugins/events-calendar-pro/src/Events_Pro/Custom_Tables/V1/WP_Query/Modifiers/Events_Not_Recurring_Custom_Tables_Query_Modifier.php:61) in /home/seasevents/public_html/wp-content/plugins/the-events-calendar/src/Tribe/iCal.php on line 512
Warning: Cannot modify header information - headers already sent by (output started at /home/seasevents/public_html/wp-content/plugins/events-calendar-pro/src/Events_Pro/Custom_Tables/V1/WP_Query/Modifiers/Events_Not_Recurring_Custom_Tables_Query_Modifier.php:61) in /home/seasevents/public_html/wp-content/plugins/the-events-calendar/src/Tribe/iCal.php on line 515
BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Penn Engineering Events - ECPv6.18.0//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Penn Engineering Events
X-ORIGINAL-URL:https://seasevents.nmsdev7.com
X-WR-CALDESC:Events for Penn Engineering Events
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/New_York
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20180311T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20181104T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20190310T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20191103T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20200308T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20201101T060000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190716T103000
DTEND;TZID=America/New_York:20190716T120000
DTSTAMP:20190705T150515Z
CREATED:20190705T150515Z
LAST-MODIFIED:20190705T150515Z
UID:1701-1563273000-1563278400@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "A Multi-Scale Homogenization Model for the Viscoplastic Response of Polar and Sea Ice"
DESCRIPTION:The rheology of polar ice evolves in response to weather and climate changes\, by modifying its microstructure. While the experimental evidence for the dependence of rheological properties on the microstructure is well documented\, there are only a few modeling efforts to capture the rheological behavior of polar ice\, mostly by fitting continuum models to the existing experimental data. However\, for the rapidly changing polar and sea ice\, we need a predictive model to forecast the behavior of polar ice in the future\, for which we might not have any experimental data. In this work\, we put forth a multi-scale homogenization model for the viscoplastic response of polar and sea ice\, by incorporating important microstructural features. \nIn the Arctic\, sea water freezes to form a layer of sea ice\, a multi-phase composite\, up to a few meters thick\, with a complex microstructure spanning several length scales. At the smaller length scales\, sea ice is a porous polycrystal with columnar grains\, with brine-air inclusions embedded inside the grains or dispersed along the grain boundaries. This work presents a multi-scale constitutive response for sea ice by idealizing it as a three-scale composite where the brine-air inclusions are embedded inside a polycrystalline matrix composed of columnar grains. The results from our model match with published experimental data\, by\, most importantly\, capturing the compressibility effects of brine-air inclusions. \nIn Antarctica ice sheets with a typical thickness of 1-3km\, as the snow accumulates on the surface of the ice sheet\, the snow beneath the top layer is densified and is eventually transformed into the ice with trapped air bubbles—bubbly ice. The size\, shape and volume fraction of these air bubbles have a profound impact on the rheological response of the ice. In addition\, bubble shape could also be used as strain-indicators in glaciers. We develop a multi-scale homogenization model for the constitutive response of bubbly-ice by treating it as a three-phase polycrystalline composite\, where pressurized bubbles are embedded inside the polycrystalline matrix. The model predicts that microstructural textures developed in response to different loading conditions significantly influence the macroscopic response.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-a-multi-scale-homogenization-model-for-the-viscoplastic-response-of-polar-and-sea-ice/
LOCATION:Moore 216\, 200 S. 33rd Street\, Philadelphia\, PA\, 19104\, United States
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
END:VCALENDAR