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  1. NEES Outstanding Contributor Awards, 2014

     NEES Outstanding Contributor Awards, 2014 These annual OC awards recognize exceptional contributions to the earthquake engineering community. This year, the awards cover activities that...

    http://nees.org/announcements/nees-outstanding-contributor-awards-2014

  2. Cold-formed steel construction performs better than expected in seismic tests

    Cold-formed steel construction performs better than expected in seismic tests  The CFS-NEES Phase 2 building was ultimately framed with nonstructural elements including exterior OSB,...

    http://nees.org/announcements/cold-formed-steel-construction-performs-better-than-expected-in-seismic-tests

  3. Talk focuses on ways to rebuild in quake-prone New Zealand region

    Talk focuses on ways to rebuild in quake-prone New Zealand region  Researchers are using T-Rex, a 64,000-pound shaker truck, in research to increase the resilience of homes and low-rise...

    http://nees.org/announcements/talk-focuses-on-ways-to-rebuild-in-quake-prone-new-zealand-region

  4. Earthquake engineering conference to highlight remotely installed pipe liners for earthquake-resistant pipelines

    Earthquake engineering conference to highlight remotely installed pipe liners for earthquake-resistant pipelines  Pipeline specimens were anchored to both shake tables to simulate the...

    http://nees.org/announcements/earthquake-engineering-conference-to-highlight-remotely-installed-pipe-liners-for-earthquake-resistant-pipelines

  5. Purdue-led NEES joins earthquake engineers, industry leaders for conference, marking 50th anniversary of historic Alaska quake

    Purdue-led NEES joins earthquake engineers, industry leaders for conference, marking 50th anniversary of historic Alaska quake  Damage to Fourth Avenue in downtown caused by the Great Alaskan...

    http://nees.org/announcements/purdue-led-nees-joins-earthquake-engineers-industry-leaders-for-conference-marking-50th-anniversary-of-historic-alaska-quake

  6. Purdue-led conference talks focus on quake-vulnerable wood-frame buildings

    Purdue-led Conference talks focus on quake-vulnerable wood-frame buildings   Researchers conducted tests of a wood-frame building using an outdoor shake table at the University of...

    http://nees.org/announcements/purdue-led-conference-talks-focus-on-quake-vulnerable-wood-frame-buildings

  7. Earthquake researchers get online primer for simulation method

    Earthquake researchers get online primer for simulation method West Lafayette, Ind. - Researchers from around the world now have access to expert instruction for an emerging simulation...

    http://nees.org/announcements/earthquake-researchers-get-online-primer-for-simulation-method

  8. NEES 2004-2014 A Decade of Earthquake Engineering Research

    Download PDF (4.5MB) 

    http://nees.org/retrospective

Top 8 shown

Resources feed

  1. Robust Integrated Actuator Control Algorithm and Implementation for Real Time Hybrid Simulation

    30 Jul 2014 | Publications | Contributor(s): Gaby Ou, Shirley Dyke, Bin Wu, Ali Irmak Ozdagli, Bo Li

    The new proposed Robust Integrated Actuator Control (RIAC) strategy integrates three key  control components; first is the loop shaping feedback control based on...

    http://nees.org/resources/12848

  2. test_uploading4

    29 Jul 2014 | Publications | Contributor(s): Lily Dong

    http://nees.org/resources/7738

  3. Seismic Response of Structural Walls with Geometric and Reinforcement Discontinuities

    29 Jul 2014 | Publications | Contributor(s): Enrique Villalobos

    Villalobos Fernandez, Enrique J., Ph.D., Purdue University, August 2014. Seismic Response of Structural Walls with Reinforcement and Geometric Discontinuities. Major Professor: Santiago...

    http://nees.org/resources/12801

  4. Direct In - Situ Evaluation of Liquefaction Susceptibility

    29 Jul 2014 | Publications | Contributor(s): Julia Roberts

    M.S. Thesis describing in great detail the work completed at WLA in March 2012. Includes background information, testing procedures, analysis procedures, results, and recommendations for future work.

    http://nees.org/resources/12620

  5. Seismic Responses and Protection of Building Systems Using PBEE Methodology

    29 Jul 2014 | Publications | Contributor(s): Zhan Shu

    Buildings are vulnerable to earthquake ground motions. To help reduce the loss from earthquake events, seismic protective devices emerged in recent decades to improve the performance of building...

    http://nees.org/resources/12684

  6. Simulated Bilinear-Elastic Behavior in a SDOF Elastic Structure using Negative Stiffness Device: Experimental and Analytical Study

    29 Jul 2014 | Publications | Contributor(s): Dharma Theja Reddy Pasala, Apostolos Aristotelis Sarlis, Andrei M Reinhorn, Satish Nagarajaiah, Michael Constantinou, Douglas Taylor

    The acceleration and base shear of structures during strong ground motion can be attenuated by achieving bilinear-elastic behavior without any permanent displacement—also referred to as “apparent...

    http://nees.org/resources/12656

  7. Optimal Design of Isolation Devices for Buildings Using Performance Based Methodology

    29 Jul 2014 | Publications | Contributor(s): Jian Zhang, Zhan Shu

    Seismic isolation is a viable method to reduce seismic damages to buildings under moderate and severe earthquake events. In order to systematically evaluate and optimize the building responses,...

    http://nees.org/resources/12704

  8. Optimal nonlinear damping for MDOF inelastic structures

    29 Jul 2014 | Publications | Contributor(s): Jian Zhang, Wang Xi

    Supplemental energy dissipation in the form of nonlinear viscous dampers is often used to improve the performance of new structures or to retrofit the existing ones. The role of the nonlinear...

    http://nees.org/resources/12706

  9. Dimensional Analysis of Inelastic Structures with Negative Stiffness and Supplemental Damping Devices

    29 Jul 2014 | Publications | Contributor(s): Zhan Shu, Jian Zhang, Satish Nagarajaiah

    Negative stiffness device (NSD) has been proposed as an innovative devices for seismic protection of structures. It has been shown numerically and experimentally that they can improve the...

    http://nees.org/resources/12702

  10. Performance Evaluation of Negative Stiffness Devices for Seismic Response Control of Bridge Structures via Experimental Shake Table Tests

    29 Jul 2014 | Publications | Contributor(s): Navid Attary, Michael Symans, Satish Nagarajaiah, Andrei M Reinhorn, Michael Constantinou, Apostolos Aristotelis Sarlis, Dharma Theja Reddy Pasala, Douglas Taylor

    A newly developed passive device that provides negative stiffness has been implemented within a quarter-scale highway bridge model and subjected to seismic loading via shake table testing. Details...

    http://nees.org/resources/12708

  11. Adaptive Stiffness Shaping using Negative Stiffness Device and Apparent Weakening for Seismic Response Control of Multi-story Buildings: Novel Distributed Isolation

    29 Jul 2014 | Publications | Contributor(s): Satish Nagarajaiah, Dharma Theja Reddy Pasala

    “Apparent weakening” of structures using the negative stiffness device (NSD) is a new passive structural control approach developed by the authors to mitigate the response of structures during...

    http://nees.org/resources/12674

  12. Enhanced Smooth Hysteretic Model with Degrading Properties

    29 Jul 2014 | Publications | Contributor(s): Tathagata Ray, Andrei M Reinhorn

    The elastic and inelastic nonlinear behavior of structural members use constitutive relations in which restoring forces and deformations are not proportional, and often follow different paths in...

    http://nees.org/resources/12676

  13. Dynamic Lateral Stability of Elastomeric Seismic Isolation Bearings

    29 Jul 2014 | Publications | Contributor(s): Venkata Vemuru, Satish Nagarajaiah, Armin Masroor, Gilberto Mosqueda

    Predicting the response of elastomeric seismic isolation bearings when subjected to severe ground motions is challenging due to the highly nonlinear behavior associated with the bearings under a...

    http://nees.org/resources/12680

  14. Seismic Protection of Highway Bridges with Negative Stiffness Devices

    29 Jul 2014 | Publications | Contributor(s): Navid Attary, Michael Symans, Satish Nagarajaiah, Andrei M Reinhorn, Michael Constantinou, Apostolos Aristotelis Sarlis, Dharma Theja Reddy Pasala, Douglas Taylor

    Technical Report MCEER-13-0013:A new control device has been developed and implemented for seismic response control of highway bridges. The device produces negative stiffness in a completely...

    http://nees.org/resources/12682

  15. tmp33

    29 Jul 2014 | Publications | Contributor(s): Lily Dong

    test uploading

    http://nees.org/resources/12717

  16. Seismic Response of Reinforced Concrete Walls with Lap Splices

    29 Jul 2014 | Publications | Contributor(s): Enrique Villalobos, Santiago Pujol

    Proceeding of the 10NCEE.

    http://nees.org/resources/12766

  17. Real - Time Hybrid Simulation of a Multi - Story Wood Shear Wall with F irst - S tory Experimental Substructure Incorporating a Rate - Dependent Seismic Energy Dissipation Device

    29 Jul 2014 | Publications | Contributor(s): John Willem van de Lindt, Xiaoyun Shao, Pouria Bahmani, WeiChiang Pang, ershad ziaei, Michael Symans, jingjing tian

    Real-time hybrid simulation (RTHS) of a stacked wood shear wall retrofitted with a rate-dependentseismic energy dissipation device (viscous damper) was conducted at the newly constructed...

    http://nees.org/resources/12810

  18. 3D Unit Cell Model of Prefabricated Drain in Liquefiable Soil

    29 Jul 2014 | Computational Models | Contributor(s): Rachelle Howell, Xiaoyue Wang, Ellen M. Rathje

    This OpenSees model is a 3D unit cell infinite slope model of the area of influence around a single drain (or, in the case of the untreated model, a free-field untreated area equal to the area of...

    http://nees.org/resources/12770

  19. Benchmark Wireless Structural Control Problem

    29 Jul 2014 | Computational Models | Contributor(s): Zhuoxiong Sun, Bo Li, Shirley Dyke, Chenyang Lu

    Structural control systems offer an attractive approach to protect civil infrastructures from natural hazards such as earthquakes. Wireless structural control systems which utilize wireless...

    http://nees.org/resources/12787

  20. Performance Based Implementation of Seismic Protective Devices for Structures

    29 Jul 2014 | Publications | Contributor(s): Wang Xi

    In order to improve the seismic performance of structures and to reduce the total cost (both direct and indirect) due to earthquake damages, structural control through seismic protective devices...

    http://nees.org/resources/12825

Top 20 shown