Simulation of Structural Collapse with Coupled Finite Element-Discrete Element Method

Lu, Xinzheng; Lin, Xuchuan; Ye, Lieping

doi:10.1007/978-90-481-2822-8_14

Cited by 15 publications

(7 citation statements)

References 5 publications

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“…Thus, special treatment measures are needed to control the strong nonlinear behavior in the collapse process of structures. Other methods are needed to solve problems of discontinuity, such as those of fractures and collisions [14][15][16]. Numerical simulation of the collapse process of structures is usually based on explicit integration of the finite element program.…”

Section: Introductionmentioning

confidence: 99%

Collapse Analysis of Transmission Tower Subjected to Earthquake Ground Motion

Long

Wang

Fan

2018

Modelling and Simulation in Engineering

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The collapse of transmission towers involves a series of complex problems, including geometric nonlinearity, material nonlinearity, dynamic nonlinearity, and the failure of members. Simulation of the process of collapse is difficult using traditional finite element method (FEM), which is generated from continuum and variation principle, whereas the finite particle method (FPM) enforces equilibrium on each point. Particles are free to separate from one another, which is advantageous in the simulation of the structural collapse. This paper employs the finite particle method (FPM) to simulate the collapse of a transmission steel tower under earthquake ground motions; the three-dimensional (3D) finite particle model using MATLAB and the 3D finite element model using ANSYS of the transmission steel tower are established, respectively. And the static and elastic seismic response analyses indicate that the results of the FPM agree well with those of the FEM. To simulate the collapse of the transmission steel tower, a failure criterion based on the ideal elastic-plastic model and a failure mode are proposed. Finally, the collapse simulation of the transmission steel towers subjected to unidirectional earthquake ground motion and the collapse seismic fragility analysis can be successfully carried out using the finite particle method. The result indicates that the transmission steel tower has better seismic safety performance and anticollapse ability.

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Section: Introductionmentioning

confidence: 99%

Collapse Analysis of Transmission Tower Subjected to Earthquake Ground Motion

Long

Wang

Fan

2018

Modelling and Simulation in Engineering

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“…Stone arch bridges are made up of discrete blocks. In addition to the finite element method (FEM), the discrete element method (DEM) has also shown advantages in simulating the interaction between the stone bricks during a progressive collapse (Isobe and Tsuda 2003;Khandelwal 2008;Lu et al 2009;Munjiza et al 2004). With the rapid development of parallel computation, DEM is being used more and more to simulate progressive collapses of medium and large-sized stone arch bridges.…”

Section: Introductionmentioning

confidence: 99%

Progressive-Collapse Simulation and Critical Region Identification of a Stone Arch Bridge

Guan

et al. 2013

J. Perform. Constr. Facil.

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Progressive collapses of arch bridges have repeatedly occurred in recent years, resulting in many casualties and significant property losses. Based on an actual recent and serious progressive collapse of a stone arch bridge, this paper simulated the complete progressive-collapse process using the general purpose finite element (FE) program, MSC.Marc. The simulation adopted a 3D FE model and performed a nonlinear analysis using the contact algorithm in conjunction with the element deactivation technique. The potential causes of the progressive-collapse of the stone arch bridge were also evaluated. Furthermore, the importance of different components of the stone arch bridge was determined with the conception of generalized structural stiffness; thus, the most critical and vulnerable regions of the bridge were identified. The results of the simulated progressive-collapse process agreed well with the actual process, and the predicted critical regions were both correct and realistic. This study also provides important references for the analysis and prevention of progressive collapses of stone arch bridges.

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“…Munjinza et al[251] combined DEM with FEM to study failures of beams and columns and achieved a good correlation between the experimental and numerical results. Taking advantage of the discovery of Munjinza et al[251], Lu et al[252] used the technique to study the progressive collapse of building structures.…”

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confidence: 99%