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Study of the mechanics of progressive collapse of FPB isolated beam-pier substructures

Jingcai ZHANG; Yong DING; Xinchun GUAN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 6,   Pages 718-728 doi: 10.1007/s11709-022-0815-3

Abstract: The horizontal stiffness of the isolated layer is reduced substantially by a friction pendulum bearingHowever, horizontal stiffness is essential to progressive collapse resistance of structures.Progressive collapse resistance by flexural action of the beam and additional resistance owing to the horizontalThe results show that progressive collapse resistance provided by horizontal restraining can be reduced

Keywords： friction pendulum bearing     progressive collapse     horizontal stiffness     compressive arching action     catenary    

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Influence of core stiffness on the behavior of tall timber buildings subjected to wind loads

Zhouyan XIA, Jan-Willem G. VAN DE KUILEN, Andrea POLASTRI, Ario CECCOTTI, Minjuan HE

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 213-226 doi: 10.1007/s11709-021-0692-1

Abstract: wind load distributions on individual structural elements, which determine the total number and the stiffnessAccordingly, spring links with equivalent stiffness that simulate the mechanical fasteners were employedthe limitation prescribed in Chinese Code JGJ 3–2010 owing to the lightweight of CLT and decreased stiffnessTo restrict this top acceleration within the limit, further approaches to increase the stiffness in the

Keywords： cross-laminated timber     tall timber buildings     finite element analysis     horizontal deflection     top acceleration    

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Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 711-725 doi: 10.1007/s11465-021-0647-1

Abstract: Thus, this paper aims to design a novel variable stiffness actuator (VSA) that can provide safer physicalVSA follows the idea of modular design, mainly including a variable stiffness module and a drive moduleThe variable stiffness module transmits the motion from the drive module in a roundabout manner, makingAs the key component of the variable stiffness module, a stiffness adjustment mechanism with a symmetricalExperiment results show that the VSA stiffness is close to the theoretical design stiffness.

Keywords： variable stiffness actuator     variable stiffness module     drive module     symmetrical structure     double-deck    

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Natural convection heat transfer of water in a horizontal circular gap

SU Guanghui, WU Yingwei, Kenichiro Sugiyama

Frontiers in Energy 2007, Volume 1, Issue 2,   Pages 167-173 doi: 10.1007/s11708-007-0021-y

Abstract: An experimental study on the natural convection heat transfer on a horizontal downward facing heatedbuoyancy force acts as a resistance force for natural convection heat transfer on a downward facing horizontal

Keywords： function     diameter     different independent     different characteristic     horizontal downward    

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Comparison of indices for stiffness performance evaluation

Giuseppe CARBONE, Marco CECCARELLI,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3,   Pages 270-278 doi: 10.1007/s11465-010-0023-z

Abstract: This paper addresses the problem of a numerical evaluation of the stiffness performance for multibodyStiffness indices are computed and compared for a case study.Results are used for comparing the effectiveness of the stiffness indices.

Keywords： robotics     stiffness     performance indices    

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Numerical simulation of liquid falling film on horizontal circular tubes

Fengdan SUN, Songlin XU, Yongchuan GAO

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 3,   Pages 322-328 doi: 10.1007/s11705-012-1296-z

Abstract: The objective of this study is to investigate numerically the flow characteristics of falling film on horizontal

Keywords： falling film     horizontal tube     flow characteristics     film thickness     liquid feeder height    

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Numerical analysis of bearing behaviors of single batter piles under horizontal loads in various directions

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2,   Pages 224-237 doi: 10.1007/s11709-022-0914-1

Abstract: The horizontal bearing behavior of a single batter pile (SBP) is vital to its application in practicalengineering; however, the horizontal responses of SBPs change with the directions of horizontal loadsTherefore, the directional differences in the horizontal bearing behaviors of SBPs are investigated inon the horizontal bearing capacities and distributions of the bending moments of the SBPs.Subsequently, the differences in the responses of the SBPs under horizontal loads in various directions

Keywords： single batter pile     skew horizontal load     model test     finite-element analysis     empirical design method    

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Experimental study on shear behavior of reinforced concrete beams with web horizontal reinforcement

Dong XU,Yu ZHAO,Chao LIU

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4,   Pages 325-336 doi: 10.1007/s11709-014-0080-1

Abstract: concrete beams, current codes do not provide any calculation method to evaluate the influence of web horizontalcomprises results of 11 reinforced concrete beams in an effort to investigate the influence of web horizontaldesign variables are the shear-span-depth ratio, different reinforcement ratio of stirrups and web horizontalInfluence of web horizontal reinforcement on crack patterns and failure mode was studied.It was found that web horizontal reinforcement can increase the shear capacity of the beams and restrain

Keywords： reinforced concrete beam     shear strength     web horizontal reinforcement     experiments    

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Optimization model for rotor blades of horizontal axis wind turbines

LIU Xiong, CHEN Yan, YE Zhiquan

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 483-488 doi: 10.1007/s11465-007-0084-9

Abstract: This paper presents an optimization model for rotor blades of horizontal axis wind turbines.

Keywords： population     extended     algorithm     developed optimization     accurate    

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New nonlinear stiffness actuator with predefined torque‒deflection profile

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0721-3

Abstract: A nonlinear stiffness actuator (NSA) could achieve high torque/force resolution in low stiffness rangeand high bandwidth in high stiffness range, both of which are beneficial for physical interaction between

Keywords： compliant actuator     nonlinear stiffness actuator     nonlinear spring     predefined torque−deflection profile    

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Mechanical design, modeling, and identification for a novel antagonistic variable stiffness dexterous

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0691-5

Abstract: It achieves finger stiffness adjustability according to the biologically inspired stiffness variationprinciple of discarding some mobilities to adjust stiffness.The mechanical design of the finger and its stiffness adjusting methods are elaborated.The stiffness characteristics of the finger joint and the actuation unit are analyzed.finger stiffness presets are provided to verify the validity of the model.

Keywords： multifingered hand     mechanism design     robot safety     variable stiffness actuator    

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Mechanical performance analysis and stiffness test of a new type of suspension bridge

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1160-1180 doi: 10.1007/s11709-021-0760-6

Abstract: A new type of suspension bridge is proposed based on the gravity stiffness principle.The rigid webs connect the main cable and main girder to form a truss that can improve the bending stiffnessbraces connect the main cables to form a closed space truss structure that can improve the torsional stiffnessA stiffness test was carried out on the new type of suspension bridge with a small span, and the results

Keywords： new type of suspension bridge     stiffness test     mechanical performance     railway bridge     space truss    

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Numerical simulation on flow of ice slurry in horizontal straight tube

Shengchun LIU,Ming SONG,Ling HAO,Pengxiao WANG

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 201-207 doi: 10.1007/s11708-017-0451-0

Abstract: Numerical simulation on flow of ice slurry in horizontal straight tubes was conducted in this paper to

Keywords： ice slurry     horizontal tubes     numerical simulation     pressure drop     viscosity model    

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Investigating the influence of delamination on the stiffness of composite pipes under compressive transverse

Sattar MALEKI, Roham RAFIEE, Abolfazl HASANNIA, Mohammad Reza HABIBAGAHI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1316-1323 doi: 10.1007/s11709-019-0555-1

Abstract: The effect of delamination on the stiffness reduction of composite pipes is studied in this research.The stiffness test of filament wound composite pipes is simulated using cohesive zone method.geometrical parameters including delamination size and its position with respect to loading direction on stiffnessAt first, finite element results for stiffness test of a perfect pipe without delamination are validateddirections and also its orientation with respect to loading direction on delamination propagation and stiffness

Keywords： delamination     composite pipes     stiffness test     cohesive zone method    

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A numerical framework for underground structures in layered ground under inclined P-SV waves using stiffness

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 10-24 doi: 10.1007/s11709-022-0904-3

Abstract: The free-field responses are first obtained using the stiffness matrix method based on plane-wave assumptions

Keywords： underground structures     seismic response     stiffness matrix method     domain reduction method     P-SV waves    

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Title Author Date Type Operation

Study of the mechanics of progressive collapse of FPB isolated beam-pier substructures

Jingcai ZHANG; Yong DING; Xinchun GUAN

Journal Article

Influence of core stiffness on the behavior of tall timber buildings subjected to wind loads

Zhouyan XIA, Jan-Willem G. VAN DE KUILEN, Andrea POLASTRI, Ario CECCOTTI, Minjuan HE

Journal Article

Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Journal Article

Natural convection heat transfer of water in a horizontal circular gap

SU Guanghui, WU Yingwei, Kenichiro Sugiyama

Journal Article

Comparison of indices for stiffness performance evaluation

Giuseppe CARBONE, Marco CECCARELLI,

Journal Article

Numerical simulation of liquid falling film on horizontal circular tubes

Fengdan SUN, Songlin XU, Yongchuan GAO

Journal Article

Numerical analysis of bearing behaviors of single batter piles under horizontal loads in various directions

Journal Article

Experimental study on shear behavior of reinforced concrete beams with web horizontal reinforcement

Dong XU,Yu ZHAO,Chao LIU

Journal Article

Optimization model for rotor blades of horizontal axis wind turbines

LIU Xiong, CHEN Yan, YE Zhiquan

Journal Article

New nonlinear stiffness actuator with predefined torque‒deflection profile

Journal Article

Mechanical design, modeling, and identification for a novel antagonistic variable stiffness dexterous

Journal Article

Mechanical performance analysis and stiffness test of a new type of suspension bridge

Journal Article

Numerical simulation on flow of ice slurry in horizontal straight tube

Shengchun LIU,Ming SONG,Ling HAO,Pengxiao WANG

Journal Article

Investigating the influence of delamination on the stiffness of composite pipes under compressive transverse

Sattar MALEKI, Roham RAFIEE, Abolfazl HASANNIA, Mohammad Reza HABIBAGAHI

Journal Article

A numerical framework for underground structures in layered ground under inclined P-SV waves using stiffness

Journal Article