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Water film coated composite liquid metal marble and its fluidic impact dynamics phenomenon

Yujie DING,Jing LIU

Frontiers in Energy 2016, Volume 10, Issue 1, Pages 29-36 doi: 10.1007/s11708-015-0388-0

Abstract: into water droplets, the fabricated liquid marble successfully avoided being oxygenized by the metal fluidThis fundamental finding raised profound multiphase fluid mechanics for understanding the complex liquid

Keywords： liquid metal marble metallic droplet composite fluid impact dynamics multiphase fluid mechanics

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A regularization scheme for explicit level-set XFEM topology optimization

Markus J. GEISS, Jorge L. BARRERA, Narasimha BODDETI, Kurt MAUTE

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 2, Pages 153-170 doi: 10.1007/s11465-019-0533-2

Abstract: Regularization of the level-set (LS) field is a critical part of LS-based topology optimization (TO) approaches. Traditionally this is achieved by advancing the LS field through the solution of a Hamilton-Jacobi equation combined with a reinitialization scheme. This approach, however, may limit the maximum step size and introduces discontinuities in the design process. Alternatively, energy functionals and intermediate LS value penalizations have been proposed. This paper introduces a novel LS regularization approach based on a signed distance field (SDF) which is applicable to explicit LS-based TO. The SDF is obtained using the heat method (HM) and is reconstructed for every design in the optimization process. The governing equations of the HM, as well as the ones describing the physical response of the system of interest, are discretized by the extended finite element method (XFEM). Numerical examples for problems modeled by linear elasticity, nonlinear hyperelasticity and the incompressible Navier-Stokes equations in two and three dimensions are presented to show the applicability of the proposed scheme to a broad range of design optimization problems.

Keywords： level-sets XFEM CutFEM topology optimization heat method signed distance field nonlinear structural mechanics fluid mechanics

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Progressive failure analysis of notched composite plate by utilizing macro mechanics approach

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3, Pages 623-642 doi: 10.1007/s11709-021-0726-8

Abstract: reduction methods were combined to simulate a progressive failure in notched composite plates using a macro mechanics

Keywords： progressive failure notched composite plate Hashin failure criterion macro mechanics approach finite

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Dvelopment of Aeronautics and Astronautics With Mechanics

Chen Shilu

Strategic Study of CAE 2003, Volume 5, Issue 3, Pages 25-26

Abstract:

This paper discusses the development of aeronautics and astronautics with mechanics, reveals the developmentof new branches of interconnected sciences in mechanics, describes the relations of flight mechanicswith aerodynamics, structure mechanics, general mechanics and automatic control, and introduces thenew branch of flight mechanics—flight dynamics of elastic vehicle.

Keywords： aerodynamics structure mechanics general mechanics automatic control flight mechanics flight dynamics

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Creep life assessment of aero-engine recuperator based on continuum damage mechanics approach

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0702-6

Abstract: The creep life of an aeroengine recuperator is investigated in terms of continuum damage mechanics by

Keywords： creep life assessment brazed joint continuum damage mechanics aeroengine recuperator

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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 bearing (FPB) toprotectthe structure from potential damages caused by earthquakes. However, horizontal stiffness is essential to progressive collapse resistance of structures. This paper presents a simplified model to assess the progressive collapse response of beam-pier substructure isolated by FPB. Progressive collapse resistance by flexural action of the beam and additional resistance owing to the horizontal restraining force was achieved. The influences of the equivalent radius and friction coefficient of the FPB, the applied axial force on the FPB, and span-depth ratio of the beam on the additional resistance were investigated. Simulations were conducted to verify the proposed model. The results show that progressive collapse resistance provided by horizontal restraining can be reduced as large as 46% and 88% during compressive arching action (CAA) and catenary action (CA), respectively. The equivalent radius of the FPB shows limited effect on the progressive collapse response of FPB isolated structures, but friction coefficient and applied axial force, as well as depth ratio of the beam, show significant influences on the additional progressive collapse resistance capacity. Finite element method (FEM) results are in good agreement with the result obtained by the proposed method.

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

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Advances in structural mechanics of Chinese ancient architectures

YU Maohong, ODA Yoshiya, FANG Dongping, ZHAO Junhai

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 1, Pages 1-25 doi: 10.1007/s11709-008-0002-1

Abstract: The researches on the structural mechanics of ancient architectures show the different aspects of structureand mechanics.Systematical studies on the structural mechanics of ancient architectures have been carried out at Xihave in fact problems of structural strength and stability; the need for further studies on structural mechanics

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Generalized Plastic Mechanics and Its Application

Zheng Yingren,Kong Liang

Strategic Study of CAE 2005, Volume 7, Issue 11, Pages 21-36

Abstract: development of geotechnical plasticity is reviewed and some problems of applying the classic plastic mechanicsBy giving up the three hypotheses, a generalized plastic potential theory can be obtained from solid mechanicsdirectly, and then the traditional plastic mechanics can be changed to a more generalized plastic mechanics, namely generalized plastic mechanics (GPM).

Keywords： geotechnical plastic mechanics generalized plastic mechanics plastic potential yield surface constitutive

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A computational toolbox for molecular property prediction based on quantum mechanics and quantitative

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2, Pages 152-167 doi: 10.1007/s11705-021-2060-z

Abstract: In this paper, a framework combining quantum mechanics and quantitative structure-property relationship, a database is created for collections of basic molecular information; in the second step, quantum mechanics-basedcalculations are performed to predict quantum mechanics-based/derived molecular properties (pseudo experimental

Keywords： molecular property quantum mechanics quantitative structure-property relationship heat of reaction

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Review of the LNG intermediate fluid vaporizer and its heat transfer characteristics

Frontiers in Energy 2022, Volume 16, Issue 3, Pages 429-444 doi: 10.1007/s11708-021-0747-y

Abstract: The intermediate fluid vaporizer (IFV), different from other liquefied natural gas (LNG) vaporizers,Moreover, studies on the fluid flow and heat transfer behaviors of the supercritical LNG inside the tubesand the condensation heat transfer of the intermediate fluid outside the tubes are summarized.

Keywords： intermediate fluid vaporizer design of structure and intermediate fluid condensation heat transfer

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Review of fluid and control technology of hydraulic wind turbines

Maolin CAI, Yixuan WANG, Zongxia JIAO, Yan SHI

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3, Pages 312-320 doi: 10.1007/s11465-017-0433-2

Abstract:

This study examines the development of the fluid and control technology of hydraulic wind turbinesThe current state of hydraulic wind turbines as a new technology is described, and its basic fluid model

Keywords： wind turbine hydraulic system fluid model control technology

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Computational fluid dynamics simulation of aerosol transport and deposition

Yingjie TANG, Bing GUO

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3, Pages 362-377 doi: 10.1007/s11783-011-0365-8

Abstract: In this article computational fluid dynamics (CFD) simulation of aerosol transport and deposition, i.eThe review gives a brief account of the basics of aerosol mechanics, followed by a description of the

Keywords： computational fluid dynamics (CFD) aerosol transport deposition

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Investigation of carbon dioxide photoreduction process in a laboratory-scale photoreactor by computational fluid

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7, Pages 1149-1163 doi: 10.1007/s11705-021-2096-0

Abstract: The novelty of this work is the computational fluid dynamic model combined with the novel carbon dioxide

Keywords： carbon dioxide photoreduction computational fluid dynamic simulation kinetic model Langmuir adsorption

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Tsien and His Work on Mechanics^①

Tan Qingming

Strategic Study of CAE 2001, Volume 3, Issue 10, Pages 1-6

Abstract: Tsien to modern mechanics and engineering sciences, especially his work on a series of key problems inaerodynamics, solid mechanics and jet propulsion, are introduced.many new branches of engineering sciences were established, such as engineering dybernetics, physical mechanics

Keywords： Hsue-Shen Tsien mechanics engineering sciences