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Data Mining for Mesoscopic Simulation of Electron Beam Selective Melting Article

Ya Qian, Wentao Yan, Feng Lin

Engineering 2019, Volume 5, Issue 4, Pages 746-754 doi: 10.1016/j.eng.2019.06.006

Abstract: The mesoscopic modeling technique was recently introduced as a means of simulating the electron beamThis paper investigates the morphological features of the melt track from the results of mesoscopic simulationFinally, a simulation-driven optimization framework consisting of mesoscopic modeling and data mining

Keywords： Electron beam selective melting Mesoscopic modeling Data mining

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bottleneck of phosphonic acid anchoring groups aiming toward enhancing the stability and efficiency of mesoscopic

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7, Pages 1060-1078 doi: 10.1007/s11705-021-2117-z

Abstract: Novel near-infrared sensitizers with different anchoring groups aiming toward improved stability and efficiency of dye-sensitized solar cells were synthesized. Adsorption of these dyes on the mesoporous TiO₂ surface revealed the dye adsorption rate of –CH=CH–COOH (SQ-139)>–CH=C(CN)COOH (SQ-140)>–PO₃H₂ (SQ-143)>–CH=C(CN)PO₃H₂ (SQ-148)>–CH=C(CN)PO₃H–C₂H₅ (SQ-157)>–PO₃H–C₂H₅ (SQ-151)>–CH=CH–COOH(–PO₃H₂) (SQ-162). The binding strength of these dyes on mesoporous TiO₂ as investigated by dye desorption studies follows SQ-162>SQ-143>SQ-148>SQ-139>SQ-157~SQ-151>SQ-140 order. The acrylic acid anchoring group was demonstrated to be an optimum functional group owing to its fast dye adsorption rate and better binding strength on TiO₂ along with good photoconversion efficiency. Results of dye binding on TiO₂ surface demonstrated that SQ-162 bearing double anchoring groups of phosphonic and acrylic acid exhibited>550 times stronger binding as compared to dye SQ-140 having cyanoacrylic acid anchoring group. SQ-140 exhibited the best photovoltaic performance with photon harvesting mainly in the far-red to near-infrared wavelength region having short circuit current density, open-circuit voltage and fill factor of 14.28 mA·cm^–2, 0.64 V and 0.65, respectively, giving the power conversion efficiency of 5.95%. Thus, dye SQ-162 not only solved the problem of very poor efficiency of dye bearing only phosphonic acid while maintaining the extremely high binding strength opening the path for the design and development of novel near-infrared dyes with improved efficiency and stability by further increasing the π-conjugation.

Keywords： anchoring groups adsorption behaviour dye-binding strength squaraine dyes dye-sensitized solar cells

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Selective Laser Melting under Variable Ambient Pressure: A Mesoscopic Model and Transport Phenomena Article

Renzhi Hu, Manlelan Luo, Anguo Huang, Jiamin Wu, Qingsong Wei, Shifeng Wen, Lichao Zhang, Yusheng Shi, Dmitry Trushnikov, V. Ya. Belenkiy, I. Yu. Letyagin, K.P. Karunakaran, Shengyong Pang

Engineering 2021, Volume 7, Issue 8, Pages 1157-1164 doi: 10.1016/j.eng.2021.07.003

Abstract: Herein, we first developed a mesoscopic model of SLM under variable ambient pressure based on our recentTo summarize, our model elucidates the physical mechanisms of the interesting transport phenomena that

Keywords： Selective laser melting Mesoscopic model Ambient pressure Transport phenomena

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Effect of catalyst layer mesoscopic pore-morphology on cold start process of PEM fuel cells

Ahmed Mohmed DAFALLA, Fangming JIANG

Frontiers in Energy 2021, Volume 15, Issue 2, Pages 460-472 doi: 10.1007/s11708-021-0733-4

Abstract: This work studies the effect of CCL mesoscopic pore-morphology on PEMFC cold start.

Keywords： cold start energy conversion fuel cells mesoscale morphology tortuosity water management

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Mesoscopic Modeling Approach and Application for Steel Fiber Reinforced Concrete under Dynamic Loading Review

张锦华, 吴彰钰, 余红发, 麻海燕, 达波

Engineering 2022, Volume 16, Issue 9, Pages 220-238 doi: 10.1016/j.eng.2022.01.011

Abstract: of steel fibers in matrix and further capture the failure mechanism of SFRC under dynamic loads, the mesoscopicThis paper presents a comprehensive review of the state-of-the-art mesoscopic models and simulationsGeneration approaches for the SFRC mesoscale model in the simulation works, including steel fiber, coarse

Keywords： Steel fiber reinforced concrete Mesoscale modeling Dynamic loading Materials model Interfacial characteristic

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Numerical simulation of damage in high arch dam due to earthquake

Hong ZHONG , Gao LIN , Hongjun LI

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3, Pages 316-322 doi: 10.1007/s11709-009-0039-9

Abstract: The bilinear damage evolution model and the damage evolution model expressed in power function with descendingThis conclusion agrees with the model test result.

Keywords： mesoscopic heterogeneity damage simulation in earthquakes arch dam

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Mesoscopic properties of dense granular materials: An overview

Qicheng SUN, Feng JIN, Guohua ZHANG

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1, Pages 1-12 doi: 10.1007/s11709-013-0184-z

Abstract: A granular material is a conglomeration of discrete solid particles. It is intrinsically athermal because its dynamics always occur far from equilibrium. In highly excited gaseous states, it can safely be assumed that only binary interactions occur and a number of kinetic theories have been successfully applied. However, for granular flows and solid-like states, the theory is still poorly understood because of the internally correlated structures, such as particle clusters and force networks. The current theory is that the mesoscale characteristics define the key differences between granular materials and homogeneous solid materials. Widespread interest in granular materials has arisen among physicists, and significant progress has been made, especially in understanding the jamming phase diagram and the characteristics of the jammed phase. In this paper, the underlying physics of the mesoscale structure is discussed in detail. A multiscale framework is then proposed for dense granular materials.

Keywords： granular matter macroscopic structure jamming phase transition

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Three-Dimensional Mesoscopic Investigation on the Impact of Specimen Geometry and Bearing Strip Size Article

Zhangyu Wu, Jinhua Zhang, Hongfa Yu, Qin Fang, Haiyan Ma, Li Chen

Engineering 2022, Volume 17, Issue 10, Pages 110-122 doi: 10.1016/j.eng.2021.02.024

Abstract: The fst values of the cube model are slightly higher than those of the cylinder model for the same bearing

Keywords： Coral aggregate concrete 3D mesoscopic modelling Split-tension test Tensile strength Specimen geometry

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Modeling of alkali-silica reaction in concrete: a review

J.W. PAN, Y.T. FENG, J.T. WANG, Q.C. SUN, C.H. ZHANG, D.R.J. OWEN

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 1, Pages 1-18 doi: 10.1007/s11709-012-0141-2

Abstract: Mesoscopic models have attempted to explain the mechanism of mechanical deterioration of ASR-affected

Keywords： alkali-silica reaction (ASR) modeling concrete mesoscopic macroscopic

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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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Title Author Date Type Operation

Data Mining for Mesoscopic Simulation of Electron Beam Selective Melting

Ya Qian, Wentao Yan, Feng Lin

Journal Article

bottleneck of phosphonic acid anchoring groups aiming toward enhancing the stability and efficiency of mesoscopic

Journal Article

Selective Laser Melting under Variable Ambient Pressure: A Mesoscopic Model and Transport Phenomena

Renzhi Hu, Manlelan Luo, Anguo Huang, Jiamin Wu, Qingsong Wei, Shifeng Wen, Lichao Zhang, Yusheng Shi, Dmitry Trushnikov, V. Ya. Belenkiy, I. Yu. Letyagin, K.P. Karunakaran, Shengyong Pang

Journal Article

Effect of catalyst layer mesoscopic pore-morphology on cold start process of PEM fuel cells

Ahmed Mohmed DAFALLA, Fangming JIANG

Journal Article

Mesoscopic Modeling Approach and Application for Steel Fiber Reinforced Concrete under Dynamic Loading

张锦华, 吴彰钰, 余红发, 麻海燕, 达波

Journal Article

Numerical simulation of damage in high arch dam due to earthquake

Hong ZHONG , Gao LIN , Hongjun LI

Journal Article

Mesoscopic properties of dense granular materials: An overview

Qicheng SUN, Feng JIN, Guohua ZHANG