Adaptive multiscale analyses on structural failure considering localized damage evolution on vulnerable joints

Zheng, Zongyu; Li, Z. X.; Chen, Z. W.

doi:10.1016/j.acme.2013.08.004

Cited by 9 publications

(4 citation statements)

References 14 publications

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“…The total time consumed in the MTB multiscale computation is 71.3 per cent less than a single fine-scale computation. Compared to the previous structural multiscale method (Li et al, 2012;Zheng et al, 2014), the MTB simulation can improve the computation efficiency significantly. In this case, the computation error is kept within tolerable range.…”

Section: Numerical Examplesmentioning

confidence: 99%

“…Because material nonlinear deformation is incompatible with scale bridging at trans-scale boundary, when material inelastic responses evolve and approach the macro-scale domain (Zheng et al, 2014), the trans-scale boundary would be moved toward macro-scale domain to ensure computation accuracy, which is critical in the MTB mechanism. The FE equation would be transformed and modified accordingly.…”

Section: Trans-scale Boundary Movementmentioning

confidence: 99%

“…Besides adaptive strategy is also used in simulation with model updating like crack propagation (Holl et al, 2013). In the case of concurrent multiscale structural system, owing to the influence of damage evolution on scale bridging (Zheng et al, 2014), the scale domain division and scale bridging are supposed to be modified adaptively according to the outspread of nonlinear response to keep the trans-scale boundary remote from the damage evolution area, which is rarely considered currently. In the adaptive model modification, the previous results could be used with field reconstruction and transition to avoid re-calculation from the initial step and rise computation efficiency (Brancherie et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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A multiscale computational method with inheriting simulation of moving trans-scale boundary for damage-induced structural deterioration

Zheng

2017

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Purpose This paper aims to introduce a multiscale computational method for structural failure analysis with inheriting simulation of moving trans-scale boundary (MTB). This method is motivated from the error in domain bridging caused by cross-scale damage evolution, which is common in structural failure induced by damage accumulation. Design/methodology/approach Within the method, vulnerable regions with high stress level are described by continuum damage mechanics, while elastic structural theory is sufficient for the rest, dividing the structural model into two scale domains. The two domains are bridged to generate mixed dimensional finite element equation of the whole system. Inheriting simulation is developed to make the computation of MTB sustainable. Findings Numerical tests of a notched three-point bending beam and a steel frame show that this MTB method can improve efficiency and ensure accuracy while capturing the effect of material damage on deterioration of components and structure. Originality/value The proposed MTB method with inheriting simulation is an extension of multiscale simulation to structural failure analysis. Most importantly, it can deal with cross-scale damage evolution and improve computation efficiency significantly.

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Section: Numerical Examplesmentioning

confidence: 99%

Section: Trans-scale Boundary Movementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A multiscale computational method with inheriting simulation of moving trans-scale boundary for damage-induced structural deterioration

Zheng

2017

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“…The two-scale model composed of beam elements and solid elements or shell elements has been proposed and extensively employed in FEM analysis on RC structures owing to its high computational efficiency [16]. Meanwhile, various kinds of two-scale modeling methods have been successfully applied in the damage and failure analysis of civil structures under earthquakes [16][17][18][19][20]. Moreover, the mesoscale modeling approach has been successfully applied in the numerical simulation of concrete structures subjected to various loading cases [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

XFEM-Based Multiscale Simulation on Monotonic and Hysteretic Behavior of Reinforced-Concrete Columns

Chen

Wang

et al. 2020

Applied Sciences

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The extended finite element method (XFEM) is efficient in simulating crack initiation and its evolution process for reinforced-concrete (RC) structures due to its ability to solve fracture problems. Moreover, the multiscale numerical simulation helps understand global and local failure behavior of RC structures simultaneously. In this study, the XFEM-based multiscale modeling approach was proposed to investigate the monotonic and hysteretic performance of RC columns. Firstly, two-scale models composed of fiber beam elements and XFEM-based solid elements with homogeneous material assumptions were established using compiled material subroutines for fiber beam elements. Secondly, the accuracy of XFEM-based two-scale analysis in predicting the hysteretic behavior of tested RC columns was verified by comparing the crack morphology and load-displacement curve obtained from tested specimens under different axial compression ratios (ACRs) and two-scale models using the concrete damaged plasticity (CDP) model. Thirdly, multiscale models of RC columns were constructed with fiber beam elements, XFEM-based solid elements and mesoscopic concrete models composed of mortar, interfacial transition zone (ITZ) and aggregates with different geometric shapes and distribution patterns. Finally, the XFEM-based multiscale simulation was employed to investigate the influence of mesoscale structure variation of concrete on both global behavior and local failure patterns of RC columns subjected to monotonic loading. The simulation results of multiscale models established with CDP model and XFEM were comparatively discussed in depth. The XFEM-based multiscale simulation developed in this study provides an efficient modeling approach for investigating the stochastic nature of cracking behavior in RC columns.

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Damage-induced material softening and its effect on seismic performance of steel structures

Wang

Sun

2016

Sci. China Technol. Sci.

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Adaptive multiscale analyses on structural failure considering localized damage evolution on vulnerable joints

Cited by 9 publications

References 14 publications

A multiscale computational method with inheriting simulation of moving trans-scale boundary for damage-induced structural deterioration

A multiscale computational method with inheriting simulation of moving trans-scale boundary for damage-induced structural deterioration

XFEM-Based Multiscale Simulation on Monotonic and Hysteretic Behavior of Reinforced-Concrete Columns

Damage-induced material softening and its effect on seismic performance of steel structures

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