Department Events

Events

  • Apr
    10

    SPREE Seminar: Jean Sulem

    McCormick - Civil and Environmental Engineering

    11:00 AM A230, Technological Institute

    EVENT DETAILS

    Multi-Physics Couplings and Strain Localization in Seismic Faults

    Abstract
    Field observations of exhumed mature faults and outcrops, i.e. faults that have experienced a large slip, have evidenced that shear deformation is often localized in very narrow slip zones. This strain localization is seen as the result of various weakening mechanisms induced during seismic slip. These weakening mechanisms may correspond to a mechanical degradation of the rock properties (micro-cracking, grain crushing and grain size reduction…), but various other physical processes can be responsible for it. The effect of shear heating in a fluid saturated fault zone leads to pore-fluid pressurization due to the discrepancy between the thermal expansion of water and solid grains. Chemical reactions such as dissolution/precipitation, mineral transformation at high temperature (dehydration of minerals, decomposition of carbonates, …) affect the solid phase of the rock, sometimes release a new fluid phase in the system and can induce a positive feedback in the progressive mechanical degradation. The width of the deforming zone is actually a key parameter, as narrow deforming zones concentrate the frictional heating, which leads to large temperature rises and thus to more rapid weakening. It also controls the multi-physics couplings which occur during dynamic slip. Thermo-chemo-mechanical couplings are nowadays more and more identified as factors that play a central role in the mechanical behavior and the evolution of localized deformation zones. Important challenges and questions are still open, which span from the qualitative understanding of the main phenomena to their quantitative description and observation.

    In this talk, we will present some recent results on analytical and numerical modelling of strain localization processes under multi-physical couplings and discuss the geophysical implications of these instabilities for earthquakes nucleation.

    Bio
    Jean Sulem is Professor at Ecole des Ponts ParisTech, and Research Director. He is leading the Geotechnical Group CERMES at Laboratoire Navier. His research interests are related to Bifurcation Theory applied to stability and strain localisation analyses, Constitutive Modelling of geomaterials, Experimental Rock Mechanics, Thermo-Hydro-Mechanical Behaviour of Geomaterials with applications to Tunnelling, Petroleum Engineering, Deep Geological Storage, Fault Mechanics.

    Jean Sulem is a member of the Advisory Board of several scientific journals and Associate Editor to Rock Mechanics and Rock Engineering. Since 2016, he is the President of the French Society of Rock Mechanics. In 2018, Jean Sulem received the Vardoulakis lecture Award from the University of Minnesota.

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    TIME Wednesday, April 10, 2019 at 11:00 AM - 12:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Tierney Acott    tierney-acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Apr
    1

    Spring Classes begin 8 a.m.

    University Academic Calendar

    All Day

    EVENT DETAILS

    TIME Monday, April 1, 2019

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

    CALENDAR University Academic Calendar

  • Apr
    3

    SPREE Seminar: Alexander Handwerger

    McCormick - Civil and Environmental Engineering

    11:00 AM A230, Technological Institute

    EVENT DETAILS

    TIME Wednesday, April 3, 2019 at 11:00 AM - 12:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Tierney Acott    tierney-acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Apr
    4

    Water in Israel and the Middle East

    McCormick - Civil and Environmental Engineering

    All Day M128, Technological Institute

    EVENT DETAILS

    TIME Thursday, April 4, 2019

    LOCATION M128, Technological Institute    map it

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    CONTACT Department of CEE    colinbphillips@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Apr
    17

    SPREE Seminar: Roman Makhnenko

    McCormick - Civil and Environmental Engineering

    11:00 AM A230, Technological Institute

    EVENT DETAILS

    TIME Wednesday, April 17, 2019 at 11:00 AM - 12:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Tierney Acott    tierney-acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Apr
    17

    Whole-Brain Leadership for PhD Students Seminar Series: Ken Alder

    McCormick School of Engineering and Applied Science

    12:00 PM ITW classroom, 1-350, Ford Motor Company Engineering Design Center

    EVENT DETAILS

    TIME Wednesday, April 17, 2019 at 12:00 PM - 1:00 PM

    LOCATION ITW classroom, 1-350, Ford Motor Company Engineering Design Center    map it

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    CONTACT Northwestern Engineering Events    northwestern-engineering-events@northwestern.edu EMAIL

    CALENDAR McCormick School of Engineering and Applied Science

  • Apr
    24

    SPREE Seminar: Dan Negrut

    McCormick - Civil and Environmental Engineering

    11:00 AM A230, Technological Institute

    EVENT DETAILS

    TIME Wednesday, April 24, 2019 at 11:00 AM - 12:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Tierney Acott    tierney-acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • May
    1

    Whole-Brain Leadership for PhD Students Seminar Series: Shari Diamond

    McCormick School of Engineering and Applied Science

    12:00 PM ITW classroom, 1-350, Ford Motor Company Engineering Design Center

    EVENT DETAILS

    TIME Wednesday, May 1, 2019 at 12:00 PM - 1:00 PM

    LOCATION ITW classroom, 1-350, Ford Motor Company Engineering Design Center    map it

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    CONTACT Northwestern Engineering Events    northwestern-engineering-events@northwestern.edu EMAIL

    CALENDAR McCormick School of Engineering and Applied Science

  • May
    8

    SPREE Seminar: Gary Klein

    McCormick - Civil and Environmental Engineering

    11:00 AM A230, Technological Institute

    EVENT DETAILS

    TIME Wednesday, May 8, 2019 at 11:00 AM - 12:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Tierney Acott    tierney-acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • May
    10

    EES Seminar: Morgan Petrovich

    McCormick - Civil and Environmental Engineering

    2:00 PM A230, Technological Institute

    EVENT DETAILS

    TIME Friday, May 10, 2019 at 2:00 PM - 3:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Tierney Acott    tierney-acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • May
    15

    SPREE Seminar: Mohsen Issa

    McCormick - Civil and Environmental Engineering

    11:00 AM A230, Technological Institute

    EVENT DETAILS

    TIME Wednesday, May 15, 2019 at 11:00 AM - 12:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Tierney Acott    tierney-acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering