Framework for virtual hybrid simulation of TADAS frames using opensees and abaqus

Ghaffary, Azin; Mohammadi, Reza Karami

doi:10.1177/1077546316679029

Cited by 21 publications

(11 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finite element analysis of bridges, both in intact and damaged conditions, offers a reliable method for simulating the behavior of bridges and a credible alternative to costly experiments [33][34][35][36][37]. However, even with this valuable numerical tool, elaborate modeling of a bridge and detailed analysis under various loading requires significant time and efforts.…”

Section: Finite-element Analysis and Overview Of Studymentioning

confidence: 99%

Effect of Cross-Frames on Load Distribution of Steel Bridges with Fractured Girder

Abedin

Mehrabi

2020

Infrastructures

View full text Add to dashboard Cite

In steel girder bridges, fracture of one girder may occur without noticeable bridge profile changes. It is critical to ensure that the bridge will have adequate capacity to prevent collapse until the next cycle of inspection discovers the damage. It is realized that once one of the bridge girders is fractured, vertical loads need to be distributed through an alternative path to the intact girder(s). In this case, cross-frames can play an important role in transferring the loads and preventing from sudden collapse. This paper investigates the impact of cross-frames on load distribution after a fracture is occurred in one girder. Bridge configurations with different cross-frame spacing were studied using finite element modeling and simulation of the bridge behavior with a fractured steel plate girder. Nonlinear and dynamic solution methods were used for these analyses. Results of this investigation demonstrated the important role cross-frames can play in providing some reserved capacity for the bridge with fractured girder to enhance the bridge redundancy. The contribution of the cross-frames and the behavior of the bridge after fracture in one girder however depends on the configuration of the bridge. A study of the variation of the effect of cross-frames with respect to the number of girders is also included in this paper.

show abstract

Section: Finite-element Analysis and Overview Of Studymentioning

confidence: 99%

Effect of Cross-Frames on Load Distribution of Steel Bridges with Fractured Girder

Abedin

Mehrabi

2020

Infrastructures

View full text Add to dashboard Cite

show abstract

“…e finite element (FE) models of single-and doubleangle members are created in the environment of ABAQUS [15] software. ree-dimensional 8-node brick elements (C3D8RH) with hybrid formulation and the reduced integration method are used for all steel members [16]. Both material and geometric nonlinearities are considered in the models.…”

Section: Finite Element Modelmentioning

confidence: 99%

Shear Lag Effects in Angles Welded at Both Legs

Abedin

Maleki

Kiani

et al. 2019

Advances in Civil Engineering

View full text Add to dashboard Cite

The shear lag phenomenon is known to reduce the tensile capacity of tension members. There are various parameters affecting shear lag that have not been considered before. In addition, previous studies have been conducted mainly on single steel sections. Using numerical methods, the present study investigates the effects of relevant parameters on shear lag in single- and double-angle sections welded at both legs. The studied parameters are connection eccentricity, connection length, gusset plate thickness, member-free length, and connection-free length. The results of the numerical analyses show that, in single-angle connections, the effects of connection length, connection eccentricity, and gusset plate thickness are more pronounced, while in double-angle connections the last parameter is not very critical. Comparing the results with the AISC-LRFD predictions, it is concluded that the specification relations are conservative in most cases. In order to reduce the overconservatism, some new equations for shear lag estimate are introduced.

show abstract

“…In virtual hybrid simulation, one OpenSees process stands for numerical substructure, the other OpenSees process stands for experimental substructure. Adapter elements are utilized to manage communication between two OpenSees processes with OpenFresco [35,36]. This approach provides an important advantage that all of the connected codes run continuously without need to shut down and restart, hence reducing analysis time consumptions significantly.…”

Section: Virtual Hybrid Simulation Proceduresmentioning

confidence: 99%

Hybrid Simulation of Soil Station System Response to Two-Dimensional Earthquake Excitation

et al. 2019

View full text Add to dashboard Cite

Soil station system seismic issues have been highly valued in recent years. In order to investigate the dynamic seismic behaviors of the intermediate column in soil station systems, a hybrid test of a soil station system was conducted. The soil station model was performed with OpenSees. Virtual hybrid simulation was fulfilled with adapter elements. A hybrid model, composed of the steel column specimen and the remainder numerical model, was assembled using the OpenFresco framework. An intermediate column was treated as the physical substructure, while the rest of the soil station system was treated as the numerical substructure in a hybrid simulation. The hybrid test results are compared with the analytical results. The data obtained from such tests show that the system can accurately reflect the mechanical properties of intermediate columns in soil station systems. A hybrid simulation would be a proper way to assess the seismic performance of a soil station system.

show abstract

Framework for virtual hybrid simulation of TADAS frames using opensees and abaqus

Cited by 21 publications

References 25 publications

Effect of Cross-Frames on Load Distribution of Steel Bridges with Fractured Girder

Effect of Cross-Frames on Load Distribution of Steel Bridges with Fractured Girder

Shear Lag Effects in Angles Welded at Both Legs

Hybrid Simulation of Soil Station System Response to Two-Dimensional Earthquake Excitation

Contact Info

Product

Resources

About