NEESit & PEER announce:

PEER & NEESit OpenSees Days

OpenSees Developer Symposium

Wednesday, August 24, 2005

8:00 – 8:15 Introduction and Symposium Goals -- Gregory L. Fenves

8:15 – 9:00 Features and Capabilities of version 1.6.2; Current Status of OpenSees; Development Process -- Frank McKenna, UC Berkeley

9:00 – 10:15 Library-Centric Computational System Design and Implementation

-- Boris Jeremic, UC Davis

OpenSees modeling of full scale pile-soil interaction and soil liquefaction experiments

-- Liangcai He, Ahmed Elgamal, and Zhaohui Yang, UC San Diego

A cyclic soil model and its application in soil-pier interaction under axial loading

-- Gang Wang, UC Berkeley

Two and Three-Dimensional Contact Element Implementation for Geotechnical Applications

-- Kathryn Petek & Pedro Arduino, University of Washington

10:15 – 10:30 Break

10:30 – 11:45 Bond-SP01: A Bond-slip Model to Capture the Strain Penetration Effects in OpenSees

-- Jian Zhao and Sri Sritharan, Iowa State

Uniaxial Material Model for Reinforcing Steel Incorporating Buckling and Fatigue

                                                             -- Jon Mohle and Sashi Kunnath, UC Davis

New Developments in Modeling Reinforced Concrete Beam-Column Joints

-- Laura Lowes, University of Washington

11:45 – 12:30 LUNCH

12:30 – 1:45 Simulating response of frame structures with strength and stiffness degradation: models, validation, convergence algorithms, and post-processing tools

-- Curt Haselton and Paul Cordova, Gregory Deierlein, Stanford University

Beam-column modeling hierarchy and beam-with-hinges element

-- Michael Scott, Oregon State University

Applications of Shape Memory Alloys Using OpenSees

-- Reginald Des Roches, Georgia Tech

1:45 – 3:00 Nonlinear stochastic dynamic analysis by OpenSees

-- Kazuya Fujimura, Armen Der Kiureghian , UC Berkeley

Reliability-based Design Optimization in OpenSees

-- Terje Haukaas, University of British Columbia

Software framework for distributed experimental-computational simulation of structural systems

-- Yoshikazu Takahashi, Kyoto University

3:00 – 3:15 Break

3:15 – 4:30 OpenSees Development Process and Panel Discussion

-- Gregory L. Fenves & Panel

PEER & NEESit OpenSees Days

OpenSees Developer Workshop

Thursday, August 25, 2005

Required: laptop and installed softare

7:30-8:00 Installed-software check (make sure softare is installed properly)

8:00-8:45 Welcome to OpenSees Developer’s Workshop

Introduction to object-oriented programming -- Gregory L. Fenves

8:45-9:30 Introduction to C++ programming -- Frank McKenna

9:30-9:45 BREAK

9:45-10:30 Introduction to OpenSees software architecture:

Model builder, recorders, domain & analysis

10:30-11:00 Uniaxial material interface

11:00-12:00 Implementation exercise of a uniaxial material

Participants will develop new material, add material into OpenSees and test it using a tk script

11:45 – 12:30 WORKING LUNCH

12:15 – 1:00 Domain classes & how they interact

1:00 – 1:30 Element interface

1:30 – 2:45 Implementation exercise of a new element

Participants will develop new element and add element into OpenSees

2:45-3:00 BREAK

3:00 – 4:00 Analysis classes & how they interact.

Trace through what happens when ‘analyze’ is invoked in the interpreter. When element methods, ‘update,’ ‘commit,’ ‘getTangent,’ and ‘getResistingForce’ are invoked

4:00 – 4:30 Workshop summary, discussion, and closing remarks

Gregory L. Fenves & Frank McKenna

PEER & NEESit OpenSees Days

OpenSees User Workshop

Friday, August 26, 2005

8:00 – 8:15 Welcome and Introduction to OpenSees & NEESit Simulation

-- Gregory Fenves

8:15 – 9:00 Getting Started with OpenSees:

Downloading and Installing the Software

Introduction to Tcl/Tk and OpenSees Commands

-- Frank McKenna

9:00 – 9:15 Introduction to the OpenSees User Resources

-- Silvia Mazzoni

9:15 -- 9:30 Break

9:30 – 10:30 Structural Models I (Parameter Definition, Nodes, Constraints, Materials, Sections & Elements, Block & Region, Geometric Transformation) -- Silvia Mazzoni

10:30 – 11:00 Structural Models II (Recorders, Loads) -- Silvia Mazzoni

11:00 – 12:00 Introduction to Analysis Commands (System, Integrator, Algorithm, Numberer Analyze) -- Frank McKenna

12:00 – 1:00 Lunch

1:00 – 1:45 When Things Go Wrong: Modifying the Script in the Event of Non-Convergence -- Frank McKenna

1:45 – 2:00 Geotechnical and Solids in OpenSees -- Boris Jeremic

2:00 – 2:45 Structural Example – Reinforced-Concrete Frame: Building the Model -- Silvia Mazzoni

2:45 – 3:00 Break

3:00 – 3:30 Structural Example – Reinforced-Concrete Frame: Static, Cyclic and Dynamic Analyses, Multiple-Support Excitation -- Frank McKenna

3:30 – 4:00 Parameter Studies Using OpenSees -- Silvia Mazzoni

4:00 – 4:15 Geotechnical and Solids Examples -- Boris Jeremic

4:15 – 4:30 Questions and Wrap-up Discussion --Frank McKenna & Gregory Fenves