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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:

The development of geotechnical plasticity is reviewed and some problems of applying the classic plasticmechanics to geomaterials are analyzed, and then its three hypotheses not fit for the deformation mechanismBy giving up the three hypotheses, a generalized plastic potential theory can be obtained from solidmechanics directly, and then the traditional plastic mechanics can be changed to a more generalized plasticmechanics, namely generalized plastic mechanics (GPM).

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

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Multiscale stochastic finite element method on random field modeling of geotechnical problems – a fast

Xi F. XU

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 2,   Pages 107-113 doi: 10.1007/s11709-014-0268-4

Abstract: In this study a fast computing procedure based on the MSFEM is developed to solve random field geotechnical

Keywords： multiscale     finite element     settlement     perturbation     random field     geotechnical    

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Independent cover meshless particle method for complex geotechnical engineering

Jianqiu WU, Yongchang CAI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 515-526 doi: 10.1007/s11709-017-0428-4

Abstract: A new Independent Cover Meshless Particle (ICMP) method is proposed for the analysis of complex geotechnicalformulation and a low computational cost, and is easy for the numerical analysis and modeling of complex geotechnical

Keywords： meshless method     particle method     independent cover     CTM     geotechnical engineering    

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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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Moving policy and regulation forward for single-use plastic alternatives

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 3, doi: 10.1007/s11783-021-1423-5

Abstract: The innovation of sustainable and environmentally friendly single-use plastic alternative materials andThe development of single-use plastic alternative products can be promoted fundamentally only by improving

Keywords： Single-use plastic alternatives     Policy     Regulation     Sustainable development    

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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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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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Consistency Guarantees for Professional Appraisal of Geotechnical Engineering Design under Market Leading

Jian-ye Zheng

Frontiers of Engineering Management 2015, Volume 2, Issue 1,   Pages 82-85 doi: 10.15302/J-FEM-2015012

Abstract: Peer review is central to the process of modern engineering. Open peer review gives the impression that decisions are arrived at in a fair and meritocratic manner with an objective, reliable, consistent process. It is responsible for identifying methodological flaws and for improving the quality. Assistance from somebody in the same discipline is valuable. Clients refer to reviewers as referees since they help to determine the fate of a design. The client sets up a hanging committee to carry out open peer review to decide whether a piece of work should be accepted, revised or rejected. Reviewers in similar specialties make up a professional group. In an open peer review refereeing a retaining and protection structure design of building foundation pit excavation, an outside expert as an assessor, might master the art of review to pay attention to guarantee consistency of processes and outcomes.

Keywords： peer review     foundation pit excavation     retaining and protection structure     design introduction    

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Current scenario and challenges of plastic pollution in Bangladesh: a focus on farmlands and terrestrial

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 6, doi: 10.1007/s11783-023-1666-4

Abstract:

● A global snapshot of plastic waste generation and disposal is analysed

Keywords： Plastic waste     Farmlands     Terrestrial ecosystem     Marine life    

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Classification and quantification of excavated soil and construction sludge: A case study in Wenzhou, China

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 2,   Pages 202-213 doi: 10.1007/s11709-021-0795-8

Abstract: urbanization in China, a large amount of excavated soil and construction sludge is being generated from geotechnicalattempted to classify the excavated soil and construction sludge according to their composition and geotechnical

Keywords： excavated soil     construction sludge     geotechnical and underground engineering     production     classification    

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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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Effects of natural zeolite and sulfate ions on the mechanical properties and microstructure of plastic

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 1,   Pages 86-98 doi: 10.1007/s11709-021-0793-x

Abstract: strategic materials used in earth-fill embankment dams and in modifying and preventing groundwater flow is plastic

Keywords： plastic concrete     sulfate resistance     natural zeolite     triaxial compression test     SEM     permeability    

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Preventing masks from becoming the next plastic problem

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1413-7

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Numerical simulation of three dimensional concrete printing based on a unified fluid and solid mechanics

Frontiers of Structural and Civil Engineering 2024, Volume 18, Issue 4,   Pages 491-515 doi: 10.1007/s11709-024-1082-2

Abstract: Deformation control constitutes one of the main technological challenges in three dimensional (3D) concrete printing, and it presents a challenge that must be addressed to achieve a precise and reliable construction process. Model-based information of the expected deformations and stresses is required to optimize the construction process in association with the specific properties of the concrete mix. In this work, a novel thermodynamically consistent finite strain constitutive model for fresh and early-age 3D-printable concrete is proposed. The model is then used to simulate the 3D concrete printing process to assess layer shapes, deformations, forces acting on substrate layers and prognoses of possible structural collapse during the layer-by-layer buildup. The constitutive formulation is based on a multiplicative split of the deformation gradient into elastic, aging and viscoplastic parts, in combination with a hyperelastic potential and considering evolving material properties to account for structural buildup or aging. One advantage of this model is the stress-update-scheme, which is similar to that of small strain plasticity and therefore enables an efficient integration with existing material routines. The constitutive model uses the particle finite element method, which serves as the simulation framework, allowing for modeling of the evolving free surfaces during the extrusion process. Computational analyses of three printed layers are used to create deformation plots, which can then be used to control the deformations during 3D concrete printing. This study offers further investigations, on the structural level, focusing on the potential structural collapse of a 3D printed concrete wall. The capability of the proposed model to simulate 3D concrete printing processes across the scales—from a few printed layers to the scale of the whole printed structure—in a unified fashion with one constitutive formulation, is demonstrated.

Keywords： particle finite element method     3D concrete printing     multiplicative split     additive manufacturing     elasto-viscoplasticity    

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Title Author Date Type Operation

Generalized Plastic Mechanics and Its Application

Zheng Yingren,Kong Liang

Journal Article

Multiscale stochastic finite element method on random field modeling of geotechnical problems – a fast

Xi F. XU

Journal Article

Independent cover meshless particle method for complex geotechnical engineering

Jianqiu WU, Yongchang CAI

Journal Article

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

Journal Article

Moving policy and regulation forward for single-use plastic alternatives

Journal Article

Dvelopment of Aeronautics and Astronautics With Mechanics

Chen Shilu

Journal Article

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

Journal Article

Advances in structural mechanics of Chinese ancient architectures

YU Maohong, ODA Yoshiya, FANG Dongping, ZHAO Junhai

Journal Article

Consistency Guarantees for Professional Appraisal of Geotechnical Engineering Design under Market Leading

Jian-ye Zheng

Journal Article

Current scenario and challenges of plastic pollution in Bangladesh: a focus on farmlands and terrestrial

Journal Article

Classification and quantification of excavated soil and construction sludge: A case study in Wenzhou, China

Journal Article

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

Journal Article

Effects of natural zeolite and sulfate ions on the mechanical properties and microstructure of plastic

Journal Article

Preventing masks from becoming the next plastic problem

Journal Article

Numerical simulation of three dimensional concrete printing based on a unified fluid and solid mechanics

Journal Article