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Isogeometric cohesive zone model for thin shell delamination analysis based on Kirchhoff-Love shell model

Tran Quoc THAI, Timon RABCZUK, Xiaoying ZHUANG

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2, Pages 267-279 doi: 10.1007/s11709-019-0567-x

Abstract: We present a cohesive zone model for delamination in thin shells and composite structures.The isogeometric (IGA) thin shell model is based on Kirchhoff-Love theory.

Keywords： cohesive zone model IGA Kirchhoff-Love model thin shell analysis delamination

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A frequency error estimation for isogeometric analysis of Kirchhoff–Love cylindrical shells

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0006-x

Abstract: A frequency error estimation is presented for the isogeometric free vibration analysis of Kirchhoff–Loveassumption, the frequency error measures are rationally derived for the quadratic and cubic formulations for Kirchhoff–LoveIn particular, the governing relationship of the continuum frequency for Kirchhoff–Love cylindrical shellsbetween numerical and theoretical frequency errors for the isogeometric free vibration analysis of Kirchhoff–Love

Keywords： isogeometric analysis Kirchhoff–Love cylindrical shell free vibration frequency error convergence

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Model server enabled management of collaborative changes in building information models

LOVE

Frontiers of Engineering Management 2018, Volume 5, Issue 3, Pages 298-306 doi: 10.15302/J-FEM-2018009

Abstract: controlling the collaborative changes in a Building Information Modeling (BIM) data repository, in a multi-model

Keywords： building information models collaboration IFC change management model-servers

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Benefits Realization Management of Computer Vision in Construction: A Missed, Yet Not Lost, Opportunity Views & Comments

Love,Jane Matthews,Weili Fang,Hanbin Luo

Engineering 2023, Volume 27, Issue 8, Pages 11-13 doi: 10.1016/j.eng.2022.09.009

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Systems thinking in construction: Improving the productivity and performance of infrastructure projects

LOVE, Hanbin LUO

Frontiers of Engineering Management 2018, Volume 5, Issue 3, Pages 285-288 doi: 10.15302/J-FEM-2018205

Abstract:

Keywords： valign= top class= J_zhaiyao

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Future-proofing ‘Next Generation’ infrastructure assets

LOVE, Lavagnon A. IKA, Giorgio LOCATELLI, Dominic D. AHIAGA-DAGBUI

Frontiers of Engineering Management 2018, Volume 5, Issue 3, Pages 407-410 doi: 10.15302/J-FEM-2018204

Abstract:

Keywords： valign= top class= J_zhaiyao

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State of Science: Why Does Rework Occur in Construction? What Are Its Consequences? And What Can be Done to Mitigate Its Occurrence? Review

Love, Jane Matthews, Michael C.P. Sing, Stuart R. Porter, Weili Fang

Engineering 2022, Volume 18, Issue 11, Pages 246-258 doi: 10.1016/j.eng.2022.05.010

Abstract:

There has been a wealth of research that has examined the nature of rework in construction. Progress toward addressing the rework problem has been limited—it still plagues practice, adversely impacting a project's performance. Almost all rework studies have focused on determining its proximal or root causes and therefore have overlooked the conditions that result from its manifestation. In filling this void, this paper draws upon our previous empirical studies, amongst others, to provide a much-needed theoretical framing to understand better why rework occurs, what its consequences are, and how it can be mitigated during construction. The theoretical framing we derive from our review provides construction organizations and their projects with a realization that the journey to mitigating rework begins with creating an error-mastery culture comprising authentic leadership, psychological safety, an errormanagement orientation, and resilience. We suggest that, once an error-mastery culture is established within construction organizations and their projects, they will be better positioned to realize the benefits of the techniques, tools, and technologies espoused to address rework, such as the Last Planner^® and building information modeling. We also provide directions for future research and identify implications for practice so that strides toward rework mitigation in construction can be made.

Keywords： Construction Errors Error-mastery culture Pathogens Rework Violations

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An Approximate Analytical Method for a Slot Ring Radome Article

Kang Luo, Jin Meng, Jiangfeng Han, Danni Zhu

Engineering 2023, Volume 30, Issue 11, Pages 75-82 doi: 10.1016/j.eng.2023.07.015

Abstract:

In this paper, an in-band and out-of-band microwave wireless power-transmission characteristic analysis of a slot ring radome based on an approximate analytical method is proposed. The main contribution of this paper is that, in the approximate analysis of the ring radome, a unified expression of the incident field on the radome surface is derived with E-plane and H-plane scanning, and the ring is approximated as 30 segments of straight strips. Solving the corresponding 60 × 60 linear equations yields the electric current distribution along the ring strip. The magnetic current along the complementary slot ring is obtained by duality. Thanks to the fully analytical format of the current distribution, the microwave wireless power-transmission characteristics are efficiently calculated using Munk's scheme. An example of a slot ring biplanar symmetric hybrid radome is used to verify the accuracy and efficiency of the proposed scheme. The central processing unit (CPU) time is about 690 s using Ansys HFSS software versus 2.82 s for the proposed method.

Keywords： Approximate analytical Ring Radome Kirchhoff-type circuit

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Standard model of knowledge representation

Wensheng YIN

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 3, Pages 275-288 doi: 10.1007/s11465-016-0372-3

Abstract: methods include predicate logic, semantic network, computer programming language, database, mathematical modelintrinsic link between various knowledge representation methods, a unified knowledge representation modelAccording to ontology, system theory, and control theory, a standard model of knowledge representationThe model is composed of input, processing, and output.In addition, the standard model of knowledge representation provides a way to solve problems of non-precision

Keywords： knowledge representation standard model ontology system theory control theory multidimensional representation

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Zhang Zhengyan: Pre Training Language Model Integrating Knowledge (2020-4-3)

18 Apr 2022

Keywords：工程管理

State of the Art of Compartment Fire Modeling

Zheng Xin,Yuan Hongyong

Strategic Study of CAE 2004, Volume 6, Issue 3, Pages 68-74

Abstract: The relevant underlying physical assumptions are presented first and the conventional model performance

Keywords： compartment field model zone model network model FZN (field zone and network) model empirical model

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Elevated temperature creep model of parallel wire strands

Frontiers of Structural and Civil Engineering Pages 1060-1071 doi: 10.1007/s11709-023-0981-y

Abstract: analyze their creep behavior, this study experimentally investigated the elevated temperature creep modelThe parameters in the general empirical formula, the Bailey–Norton model, and the composite time-hardeningmodel were fitted based on the experimental results.By evaluating the accuracy and form of the models, the composite time-hardening model, which can simultaneously

Keywords： parallel wire strands experimental study elevated temperature creep model

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Impact of crude distillation unit model accuracy on refinery production planning

Gang FU, Pedro A. Castillo CASTILLO, Vladimir MAHALEC

Frontiers of Engineering Management 2018, Volume 5, Issue 2, Pages 195-201 doi: 10.15302/J-FEM-2017052

Abstract: In this work, we examine the impact of crude distillation unit (CDU) model errors on the results of refinery-wideWe compare the swing cut+ bias CDU model with a recently developed hybrid CDU model (Fu et al., 2016)The hybrid CDU model computes material and energy balances, as well as product true boiling point (TBPCase studies of optimal operation computed using a planning model that is based on the swing cut+ biasCDU model and using a planning model that incorporates the hybrid CDU model are presented.

Keywords： impact of model accuracy on production planning swing cut+ bias CDU model hybrid CDU model refinery feedstock

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Test-driven verification/validation of model transformations

László LENGYEL,Hassan CHARAF

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 2, Pages 85-97 doi: 10.1631/FITEE.1400111

Abstract: Why is it important to verify/validate model transformations?Verified/validated model transformations make it possible to ensure certain properties of the generatedFor example, a verified/validated model transformation can ensure the preservation of certain propertiesduring the model-to-model transformation.of a novel test-driven method for verifying/validating model transformations.

Keywords： Graph rewriting based model transformations Verification/validation Test-driven verification

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Digital twin-assisted gearbox dynamic model updating toward fault diagnosis

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-023-0748-0

Abstract: One of the core challenges of intelligent fault diagnosis is that the diagnosis model requires numerousGenerating training data using a virtual model is a potential solution for addressing such a problem,and the construction of a high-fidelity virtual model is fundamental and critical for data generationIn this study, a digital twin-assisted dynamic model updating method for fault diagnosis is thus proposedhelical gearbox; the virtual data generated by this model can be used for gear fault diagnosis.

Keywords： digital twin gearbox model construction model updating physical–virtual interaction