Dynamic FE simulation of four‐story steel frame modeled by solid elements and its validation using results of full‐scale shake‐table test

Abstract

Dynamic finite element analyses of a four-story steel building frame modeled as a fine mesh of solid elements are performed using E-Simulator, which is a parallel finite element analysis software package for precisely simulating collapse behaviors of civil and building structures. E-Simulator is under development at the National Research Institute for Earth Science and Disaster Prevention (NIED), Japan. A full-scale shake-table test for a four-story frame was conducted using E-Defense at NIED, which is the largest shaking table in the world. A mesh of the entire structure of a four-story frame with approximately 19 million degrees of freedom is constructed using solid elements. The density of the mesh is determined by referring to the results of elastic-plastic buckling analyses of a column of the frame using meshes of different densities. Therefore, the analysis model of the frame is well verified. Seismic response analyses under 60, 100, and 115% excitations of the JR Takatori record of the 1995 Hyogoken-Nanbu earthquake are performed. Note that the simulation does not reproduce the collapse under the 100% excitation of the Takatori record in the E-Defense test. Therefore, simulations for the 115% case are also performed. The results obtained by E-Simulator are compared with those obtained by the E-Defense full-scale test in order to validate the results obtained by E-Simulator. The shear forces and interstory drift angles of the first story obtained by the simulation and the test are in good agreement. Both the response of the entire frame and the local deformation as a result of elastic-plastic buckling are simulated simultaneously using E-Simulator.The main core of E-Simulator is the commercial software package ADVENTURECluster [4][5][6][7], which has been extended from the open-source version, the ADVENTURE system [8,9]. These packages use FE SIMULATION OF FOUR-STORY STEEL FRAME MODELED BY SOLID ELEMENTS

Structural collapse correlative analysis using phenomenological fiber hinge elements to simulate two‐directional column deteriorations

“…Detailed three-dimensional (3D) finite element models, therefore, would be more appropriate to analyze the test, and they were used by Tada et al [7], Pan et al [8], Miyamura et al [9], and Isobe et al [10]. However, those simulations required large modeling and computational efforts, not really necessary for the most of structural components responding elastically or even inelastically as long as simpler analytical techniques are available.…”

Detailed Fem Analysis for Full Scale Steel Structure Considering Fracture of Beam Ends

“…Miyamura et al report that nonlinear behavior of shaking table test of a 4-story steel building can be replicated by using a fine meshed FE model with solid elements [1]. The authors also report about FE analysis examining a full-scale shaking table test of a 3-story steel structure that is the analytical target of this paper modeling mainly shell elements [2], [3].…”

“…Above-referenced three reports [1], [2], [3] do not simulate fracture of members in their analytical procedures. In the referenced report [1], the analytical target was the case wherein a collapse of the structure was observed because of not fracture but local buckling of the firststory columns.…”

“…Above-referenced three reports [1], [2], [3] do not simulate fracture of members in their analytical procedures. In the referenced report [1], the analytical target was the case wherein a collapse of the structure was observed because of not fracture but local buckling of the firststory columns. In the authors' previous report [3], fracture of members is not predicted but a pseudo fractures are demonstrated by eliminating elements in areas wherein the fracture occurred actually in the experimental test.…”

On Contraction of Three-Dimensional Multiple Shear Mechanism Model for Evaluation of Large Scale Liquefaction Using High Performance Computing

“…The need for a high-fidelity model increases for the evaluation of liquefaction, since it is a complicated coupling phenomena of soil and underground water. Yamashita et al [1] and Miyamura et al [2] reported that an analysis model with sufficiently fine mesh of solid elements can accurately reproduce both local damage and overall response when a non-linear constitutive relationship is implemented. Considering their achievements, we expected that the spatial resolution of liquefaction behavior could be improved by using a high-fidelity analysis model.…”