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Article

Substructure Hybrid Simulation Boundary Technique Based on Beam/Column Inflection Points

1
Department of Civil Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China
2
College of Civil Engineering, Fuzhou University, Fuzhou 350116, China
3
Department of Civil Engineering, Southeast University, Nanjing 210096, China
4
Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
*
Authors to whom correspondence should be addressed.
Sustainability 2018, 10(8), 2655; https://doi.org/10.3390/su10082655
Received: 2 July 2018 / Revised: 24 July 2018 / Accepted: 26 July 2018 / Published: 28 July 2018
Compatibility among substructures is an issue for hybrid simulation. Traditionally, the structure model is regarded as the idealized shear model. The equilibrium and compatibility of the axial and rotational direction at the substructure boundary are neglected. To improve the traditional boundary technique, this paper presents a novel substructure hybrid simulation boundary technique based on beam/column inflection points, which can effectively avoid the complex operation for realizing the bending moment at the boundary by using the features of the inflection point where the bending moment need not be simulated in the physical substructure. An axial displacement prediction technique and the equivalent force control method are used to realize the proposed method. The numerical simulation test scheme for the different boundary techniques was designed to consider three factors: (i) the different structural layers; (ii) the line stiffness ratio of the beam to column; and (iii) the peak acceleration. The simulation results for a variety of numerical tests show that the proposed technique shows better performance than the traditional technique, demonstrating its potential in improving HS test accuracy. Finally, the accuracy and feasibility of the proposed boundary technique is verified experimentally through the substructure hybrid simulation tests of a six-story steel frame model. View Full-Text
Keywords: substructure; boundary technique; inflection point; hybrid simulation; force-displacement control substructure; boundary technique; inflection point; hybrid simulation; force-displacement control
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MDPI and ACS Style

Chen, Z.; Yan, X.; Wang, H.; Zhu, X.; Spencer, B.F. Substructure Hybrid Simulation Boundary Technique Based on Beam/Column Inflection Points. Sustainability 2018, 10, 2655. https://doi.org/10.3390/su10082655

AMA Style

Chen Z, Yan X, Wang H, Zhu X, Spencer BF. Substructure Hybrid Simulation Boundary Technique Based on Beam/Column Inflection Points. Sustainability. 2018; 10(8):2655. https://doi.org/10.3390/su10082655

Chicago/Turabian Style

Chen, Zaixian; Yan, Xueyuan; Wang, Hao; Zhu, Xingji; Spencer, Billie F. 2018. "Substructure Hybrid Simulation Boundary Technique Based on Beam/Column Inflection Points" Sustainability 10, no. 8: 2655. https://doi.org/10.3390/su10082655

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