George E. Brown, Jr.Network for Earthquake Engineering Simulation

Joint development of OpenSees and its Applications in Earthquake-Induced Disaster Evolution of Civil Infrastructures.

Research Team: Jinping Ou, Zheng He (DUT), Li Chen (TU), Quan Gu

(XU), Stephen Mahin (UCB), Joel Conte (UCSD), Gilberto

Mosqueda (UCSD), Juan Caicedo (UofSC), Frank McKenna (UC Berkeley)

Outline

• What is OpenSees• OpenSees Training and Outreach• OpenSees Code Developments

Outline

• What is OpenSees• OpenSees Training and Outreach• OpenSees Code Developments

What is OpenSees?• A open-source software framework for building structural and geotechnical

(numerical) simulation applications in earthquake engineering using finite element methods.

• A communication mechanism for exchanging and building upon research accomplishments.

• OpenSees as been supported by the Pacific Earthquake Engineering Research Center (PEER) since 1997 and George E. Brown Network for Earthquake Engineering Simulation (NEES) since 2003.

Parallel&Distributed

Used Worldwide

Usage of OpenSees on NEEShub shows similar pattern

Outline

• What is OpenSees• OpenSees Training and Outreach• OpenSees Code Developments

Discovering OpenSees

• Each presentation done twice: once to facilitate those in US and European countries and the other for researchers in China and Asian countries.

• Links to these recordings are provided on the Discovering OpenSees series on NEEShub. http://nees.org/resources/4977/supportingdocs

• To date videos from the series have been watched almost 9,000 times.

Upcoming OpenSees Workshop, Harbin, China, August 21, 2013

OpenSees Workshops in China 2014!

Tongji University, 2011

Upcoming 2 day OpenSees Session, 'Second Disaster Prevention and

Mitigation Engineering Conference of China' organized by Professor Ou this

August 22-23 in Harbin, China.

Outline

• What is OpenSees• OpenSees Training and Outreach• OpenSees Code Developments

Contributions Worldwide • A hysteresis model for high damping rubber bearings. M.Kikuchi (Hokkaido University,

Japan) and I. Aiken (Seismic Isolation Design, Inc)• A number of stabilized single-point integration elements for use in continuum models:

SSP_Quad, SSP_Brick, SSPquad_UP, SSPbrick_UP,, C McGann, P Mackenzie-Heinwein, and P. Arduino, University of Washington.

• New multi-spring elements. M.Kikuchi (Hokkaido University, Japan) and I. Aiken (Seismic Isolation Design, Inc)

• A new contact element. A. Zaghi and M.Cashany (University of Connecticut)• ElasticOrthotropic material. (ElasticOrthotropic, ElasticOrthotropic3D) M. Scott (Oregon

State)• Additional elastometric Bearings elements (ElastomericBearing,

ElastomericBearingBoucWen, ElastomericBearingPlasticity). A. Schellenberg (UC Berkeley)

• SteelBRB Q.Gu (Xiamen University, P.R. China)• A number of deterioration models for use in modeling of structural frames using

concentrated plasticity approach. ModIMKPeakOriented,ModIMKPeakPinching, Bilin D.Lignos, McGill University, Canada

• Damage2p, A concrete Damage Modelfor 3d and plane stress problems, L.Tesser, Univ. Padua, Italy.

• A cyclic elastopplasticity model for post-liquefaction deformation, Rui Wang, Tsinghua University, P.R. China.

Others contd.• BeamContact2D, BeamContact3D, BeamEndContact3D C McGann, P Mackenzie-

Heinwein, and P. Arduino, University of Washington. • Triple Friction Pendulum Element , N. Dao and K. Ryan, University of Nevada - Reno. • CapPasticity Q.Gu (Xiamen University, P.R. China)• ManzariDafalias ND materials (3D, PlaneStrain) Alborz Ghofrani and P.Arduino

Similar to Usage: Researchers in US and P.R. China main contributors to OpenSees

New Directions - Fire

New Directions - Optimization

funded

Code Development: Joel Conte (UCSD), Philp Gill (UCSD) Quan Gu(Xiamen)Code Testing: students of Jinping Ou (DUT), Conte (UCSD), Gu (Xiamen)

Future OpenSees Developments

User requestsFrom 2.4.0 downloads

Participant requestsAfter Webinar

Thank You