BEGIN:VCALENDAR VERSION:2.0 METHOD:PUBLISH PRODID:-//Missouri State University/Calendar of Events//EN CALSCALE:GREGORIAN X-WR-TIMEZONE:America/Chicago BEGIN:VTIMEZONE TZID:America/Chicago BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 DTSTART:20070311T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU TZNAME:CDT END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 DTSTART:20071104T020000 RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU TZNAME:CST END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:de6f1d6e-87ba-43ea-ac5a-ad6ec3721f74.220707@calendar.missouristate.edu CREATED:20220411T133656Z LAST-MODIFIED:20220411T133656Z LOCATION:Kemper Hall 206 SUMMARY:PAMS Seminar: "Predicting Multiscale Responses of Organic High Exp losives Subjected to Thermo-Mechanical Extremes" by Dr. Tommy Sewell DESCRIPTION:Dr. Tommy SewellDepartment of ChemistryUniversity of Missouri- Kansas City\n\n\nAbstract:\n\n\nTo establish the proper set and setting\, I will begin with a brief overview of an interdisciplinary AFOSR “MURI” project that I lead which is focused on the development of integrated exp erimental and theoretical multiscale methods for understanding and predic ting the response of organic composite high explosives to mechanical shoc k wave excitation. I will then narrow the focus onto a handful of vignett es that address:\n\n\n\naspects of the fundamental nanoscale material mec hanics\, transport\, and chemistry that occur in shocked molecular crysta ls\, as determined from classical molecular dynamics (MD) simulations\;\n some even more fundamental formal developments in the theory of thermal t ransport in dielectrics\; \na physics-constrained\, MD-trained neural net work approach for obtaining Helmholtz free-energy functionals which captu re the single-crystal hyperelastic response in a form suitable for use in finite-strain continuum solid-mechanics simulations\; and\nhead-to-head comparisons between large-scale MD and continuum-mechanics predictions of shock-induced pore-collapse in molecular crystals\, focusing on the sens itivity of the continuum results both to the mesoscale material model for m and to the amount of fundamental information from the nanoscale used in the parameterization.\n\nIt is not my intent to present the preceding in mind-numbing detail. Rather\, I merely seek to convey a sense for the ki nds of new knowledge and understanding of the nanoscale physics that we a re obtaining and the methods by which they are achieved\; how this fundam ental information is being upscaled to the continuum mesoscale\; and perh aps a few opinions as regards implications of our findings for future mes oscale material modeling of shock waves in complex systems. X-ALT-DESC;FMTTYPE=text/html:<html><head><title></title></head><body><p><b >Dr.&nbsp\;Tommy Sewell<br></b><strong>Department of&nbsp\;Chemistry<br>< /strong><strong>University of Missouri-Kansas City</strong><strong><br></ strong></p>\n<p>Abstract:</p>\n<p>To establish the proper set and setting \, I will begin with a brief overview of an interdisciplinary AFOSR “MURI ” project that I lead which is focused on the development of integrated e xperimental and theoretical multiscale methods for understanding and pred icting the response of organic composite high explosives to mechanical sh ock wave excitation. I will then narrow the focus onto a handful of vigne ttes that address:</p>\n<ul>\n<li>aspects of the fundamental nanoscale ma terial mechanics\, transport\, and chemistry that occur in shocked molecu lar crystals\, as determined from classical molecular dynamics (MD) simul ations\;</li>\n<li>some even more fundamental formal developments in the theory of thermal transport in dielectrics\;&nbsp\;</li>\n<li>a physics-c onstrained\, MD-trained neural network approach for obtaining Helmholtz f ree-energy functionals which capture the single-crystal hyperelastic resp onse in a form suitable for use in finite-strain continuum solid-mechanic s simulations\; and</li>\n<li>head-to-head comparisons between large-scal e MD and continuum-mechanics predictions of shock-induced pore-collapse i n molecular crystals\, focusing on the sensitivity of the continuum resul ts both to the mesoscale material model form and to the amount of fundame ntal information from the nanoscale used in the parameterization.</li>\n< /ul>\n<p>It is not my intent to present the preceding in mind-numbing det ail. Rather\, I merely seek to convey a sense for the kinds of new knowle dge and understanding of the nanoscale physics that we are obtaining and the methods by which they are achieved\; how this fundamental information is being upscaled to the continuum mesoscale\; and perhaps a few opinion s as regards implications of our findings for future mesoscale material m odeling of shock waves in complex systems.</p></body></html> DTSTART;TZID=America/Chicago:20220428T160000 DTEND;TZID=America/Chicago:20220428T170000 SEQUENCE:0 URL:https://physics.missouristate.edu/seminars.htm CATEGORIES:Public,Alumni,Current Students,Faculty,Future Students,Staff END:VEVENT END:VCALENDAR