Special Issue "Advances in OpenSees Applications to Civil Engineering"

Deadline: 31 July 2018 (closed)
Guest Editors
(1) leading guest editor:
Joel P. Conte,
professor, Ph.D.
Department of Structural Engineering
University of California San Diego
email: jpconte@ucsd.edu

(2) guest editor:
Fank Mckenna, research scientist, Ph.D.
Department of Civil and Environmental Engineering
University of California Berkeley
email: fmckenna@berkeley.edu
Bio: Dr. Mckenna got his Ph.D. degree in the University of California Berkeley in 1997. He is research scientist of University of California Berkeley.

(3) guest editor:
Quan Gu
professor, Ph.D., Chair
Department of Civil Engineering
Xiamen University, China
email: quangu@xmu.edu.cn
Bio: Dr. Gu got his Ph.D. degree in the University of California San Diego in 2008. He joined Xiamen University of China since 2010. He is currently professor of Xiamen University and visiting scholar of University of California Berkeley.

Summary

This special issue is dedicated to the Memory of Professor Stephen A. Mahin, a world-renowned expert in earthquake engineering whose visionary research and educational efforts and contributions bridged theory, numerical modeling and computer simulation, experiments, field testing and reconnaissance work, and design. His decades of outstanding, prolific, enthusiastic, sustained and selfless service to the academia, profession and industry as well as his friendship will be remembered forever. In his capacity as Director of the Pacific Earthquake Engineering Research (PEER) Center (2009-2015), Steve was steadfast in supporting the development of OpenSees. 


OpenSees (Open System for Earthquake Engineering Simulation) is an open source object-oriented finite element (FE) software framework for modeling structural and geotechnical systems and simulate their response to static and dynamic loads, with particular emphasis to earthquakes. This framework has been under development by the PEER Center since 1997 with the National Science Foundation (NSF) as a main source of funding. OpenSees supports a wide range of simulation models, solution procedures, distributed computing models, and high-end computing. It allows the integration of advanced models of structures and soils to investigate challenging problems in soil-foundation-structure interaction. It has very attractive capabilities for physical parameterization of SSI models, response sensitivity analysis, probabilistic modeling and reliability analysis. 


Over the past two decades, OpenSees has continuously integrated the latest research outcomes (e.g, element and material models, numerical methods, nonlinear solution strategies) from researchers and engineers across the world. OpenSees has become one of the most powerful open-source research and development tool through which users can implement and test new ideas and concepts more easily and faster than before. With this background in mind, this special issue mainly focuses on (but is not limited to) the wide-spread applications and developments in OpenSees in the civil engineering community, including: 
1. Nonlinear FE modeling and analysis methods for structural, geotechnical or soil-foundation-structural or systems. 
2. Response analyses of structural, geotechnical or soil-foundation-structural systems subjected to earthquake or other extreme loading conditions. 
3. Probabilistic and deterministic analysis methods. 
4. Comparison between experimental/field measurements and FE prediction results. 
5. Integration of high performance numerical and experimental simulations methods. 
6. Other applications of mechanics to civil engineering 


The development and implementation of new analytical models, novel computational methods, hybrid experimental-numerical methods and experimental-analytical correlation studies are particularly welcome.



Keywords
finite element method; nonlinear analysis; earthquake engineering; damage simulation; structural engineering; geotechnical engineering

Published Papers

  • Integration of Peridynamic Theory and OpenSees for Solving Problems in Civil Engineering
  • Abstract Peridynamics (PD) is a powerful method to simulate the discontinuous problems in civil engineering. However, it may take a lot of effort to implement the material constitutive models into PD program for solving a broad range of problems. OpenSees is an open source software which includes a versatile material library and has been widely used by researchers and engineers in civil engineering. In this context, the paper presents a simple but effective approach to integrate PD with OpenSees by using a Client-Server (CS) software integration technique, such that the existing material constitutive models in OpenSees can be directly used by… More
  •   Views:313       Downloads:200        Download PDF

  • Rotational Friction Damper’s Performance for Controlling Seismic Response of High Speed Railway Bridge-Track System
  • Abstract CRTS-II slab ballastless track on bridge is a unique system in China high speed railway. The application of longitudinal continuous track system has obviously changed dynamic characteristics of bridge structure. The bridge system and CRTS-II track system form a complex nonlinear system. To investigate the seismic response of high speed railway (HSR) simply supported bridge-track system, nonlinear models of three-span simply supported bridge with piers of different height and CRTS-II slab ballastless track system are established. By seismic analysis, it is found that shear alveolar in CRTS-II track system is more prone to be damaged than bridge components, such as… More
  •   Views:372       Downloads:267        Download PDF

  • Probabilistic Performance-Based Optimum Seismic Design Framework: Illustration and Validation
  • Abstract In the field of earthquake engineering, the advent of the performance-based design philosophy, together with the highly uncertain nature of earthquake ground excitations to structures, has brought probabilistic performance-based design to the forefront of seismic design. In order to design structures that explicitly satisfy probabilistic performance criteria, a probabilistic performance-based optimum seismic design (PPBOSD) framework is proposed in this paper by extending the state-of-the-art performance-based earthquake engineering (PBEE) methodology. PBEE is traditionally used for risk evaluation of existing or newly designed structural systems, thus referred to herein as forward PBEE analysis. In contrast, its use for design purposes is limited… More
  •   Views:333       Downloads:260        Download PDF

  • Time-Domain Analysis of Underground Station-Layered Soil Interaction Based on High-Order Doubly Asymptotic Transmitting Boundary
  • Abstract Based on the modified scale boundary finite element method and continued fraction solution, a high-order doubly asymptotic transmitting boundary (DATB) is derived and extended to the simulation of vector wave propagation in complex layered soils. The high-order DATB converges rapidly to the exact solution throughout the entire frequency range and its formulation is local in the time domain, possessing high accuracy and good efficiency. Combining with finite element method, a coupled model is constructed for time-domain analysis of underground station-layered soil interaction. The coupled model is divided into the near and far field by the truncated boundary, of which the… More
  •   Views:281       Downloads:218        Download PDF


  • Numerical Modeling Strategy for the Simulation of Nonlinear Response of Slender Reinforced Concrete Structural Walls
  • Abstract A three-dimensional nonlinear modeling strategy for simulating the seismic response of slender reinforced concrete structural walls with different cross-sectional shapes is presented in this paper. A combination of nonlinear multi-layer shell elements and displacement-based beam-column elements are used to model the unconfined and confined parts of the walls, respectively. A uniaxial material model for reinforcing steel bars that includes buckling and low-cyclic fatigue effects is used to model the longitudinal steel bars within the structural walls. The material model parameters related to the buckling length are defined based on an analytical expression for reinforcing steel bars embedded in reinforced concrete… More
  •   Views:446       Downloads:473        Download PDF

  • OpenSees Three-Dimensional Computational Modeling of Ground-Structure Systems and Liquefaction Scenarios
  • Abstract The OpenSees computational platform has allowed unprecedented opportunities for conducting seismic nonlinear soil-structure interaction simulations. On the geotechnical side, capabilities such as coupled solid-fluid formulations and nonlinear incremental-plasticity approaches allow for representation of the involved dynamic/seismic responses. This paper presents recent research that facilitated such endeavors in terms of response of ground-foundation-structure systems using advanced material modeling techniques and high-performance computing resources. Representative numerical results are shown for large-scale soil-structure systems, and ground modification liquefaction countermeasures. In addition, graphical user interface enabling tools for routine usage of such 3D simulation environments are presented, as an important element in support of… More
  •   Views:434       Downloads:331        Download PDF


  • The Behavior of Rectangular and Circular Reinforced Concrete Columns Under Biaxial Multiple Excitation
  • Abstract The aim of this study is to investigate the dynamic performance of rectangular and circular reinforced concrete (RC) columns considering biaxial multiple excitations. For this purpose, an advanced nonlinear finite element model which can simulate various features of cyclic degradation in material and structural components is used. The implemented nonlinear fiber beam-column model accounts for inelastic buckling and low-cycle fatigue degradation of longitudinal reinforcement and can simulate multiple failure modes of RC columns under dynamic loading. Hypothetical rectangular and circular columns are used to investigate the failure modes of RC columns. A detailed ground motion selection is implemented to generate… More
  •   Views:322       Downloads:245        Download PDF

  • Real-Time Hybrid Simulation of Seismically Isolated Structures with Full-Scale Bearings and Large Computational Models
  • Abstract Hybrid simulation can be a cost effective approach for dynamic testing of structural components at full scale while capturing the system level response through interactions with a numerical model. The dynamic response of a seismically isolated structure depends on the combined characteristics of the ground motion, bearings, and superstructure. Therefore, dynamic full-scale system level tests of isolated structures under realistic dynamic loading conditions are desirable towards a holistic validation of this earthquake protection strategy. Moreover, bearing properties and their ultimate behavior have been shown to be highly dependent on rate-of-loading and scale size effects, especially under extreme loading conditions. Few… More
  •   Views:323       Downloads:227        Download PDF

  • Structural Finite Element Software Coupling Using Adapter Elements
  • Abstract This paper describes a versatile and computationally efficient method for coupling several finite element analysis (FEA) programs together so that the unique modeling and analysis capabilities of each code can be utilized simultaneously to simulate the static or dynamic response of a complete numerical system. An arbitrary number of finite element analysis software packages can be coupled by adding two special types of elements, namely generic and adapter elements, to each of the finite element applications using their programming interface. These elements are inserted at the interfaces between the different sub-domains of the complete system modeled by each finite element… More
  •   Views:465       Downloads:232        Download PDF

  • Coupling of Peridynamics and Numerical Substructure Method for Modeling Structures with Local Discontinuities
  • Abstract Peridynamics (PD) is a widely used theory to simulate discontinuities, but its application in real-world structural problems is somewhat limited due to the relatively low-efficiency. The numerical substructure method (NSM) presented by the authors and co-workers provides an efficient approach for modeling structures with local nonlinearities, which is usually restricted in problems of continuum mechanics. In this paper, an approach is presented to couple the PD theory with the NSM for modeling structures with local discontinuities, taking advantage of the powerful capability of the PD for discontinuities simulation and high computational efficiency of the NSM. The structure is simulated using… More
  •   Views:308       Downloads:232        Download PDF

  • Numerical Simulation of a New 3D Isolation System Designed for a Facility with Large Aspect Ratio
  • Abstract This paper proposes a novel three-dimensional (3D) isolation system for facilities and presents the numerical simulation approach for the isolated system under earthquake excitations and impact effect using the OpenSees (Open System for Earthquake Engineering Simulation) software frame work. The 3D isolators combine the quasi-zero stiffness (QZS) system in the vertical direction and lead rubber bearing in the horizontal direction. Considering the large aspect ratio of the isolated facility, linear viscous dampers are designed in the vertical direction to diminish the overturning effect. The vertical QZS isolation system is characterized by a cubic force-displacement relation, thus, no elements or materials… More
  •   Views:283       Downloads:200        Download PDF