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第五届世界氢能技术大会(WHTC2013)

作者： Xiaoye Yuan Jinsheng Xiao Pierre B(e)nard Richard Chahine Hydrogen Research Institute Universit(e)du Qu(e)bec(a)Trois-Rivi(e)res QC G9A 5H7 Canada Hydrogen Research Institute Universit(e)du Qu(e)bec(a)Trois-Rivi(e)res QC G9A 5H7 Canada Hubei Key Laboratory of Advanced Technology for Automotive Components School of Automotive Engineering Wuhan University of Technology Hubei 430070 China Hubei Key Laboratory of Advanced Technology for Automotive Components School of Automotive Engineering Wuhan University of Technology Hubei 430070 China

As a clean and efficient energy,hydrogen has been widely ***,one of the difficulties of hydrogen storage system is the storage ***,according to the research,the storage capacity can be improved by reducing the *** due to the high performance in hydrogen storage capacity,the cryo-adsorption hydrogen storage has become the central issue of hydrogen storage.

关键词： hydrogen storage cryo-adsorption thermal effect flow-through cooling simulation optimization

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Lumped parameter model of metal hydride hydrogen storage system

Lumped parameter model of metal hydride hydrogen storage sys...

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第五届世界氢能技术大会(WHTC2013)

作者： Yue Ming Jinsheng Xiao Pierre B(e)nard Richard Chahine Hydrogen Research Institute Universit(e)du Qu(e)bec(a)Trois-Rivi(e)res QC G9A 5H7 Canada Hydrogen Research Institute Universit(e)du Qu(e)bec(a)Trois-Rivi(e)res QC G9A 5H7 Canada Hubei Key Laboratory of Advanced Technology for Automotive Components School of Automotive Engineering Wuhan University of Technology Hubei 430070 China Hubei Key Laboratory of Advanced Technology for Automotive Components School of Automotive Engineering Wuhan University of Technology Hubei 430070 China

Hydrogen storage is one of the biggest stumbling blocks to the widespread acceptance of hydrogen as an energy *** hydride hydrogen storage systems provide a fairly good solution to this problem,for they can store and ... 详细信息

关键词： hydrogen storage metal hydride heat transfer lumped parameter system simulation

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Morphology, Microstructure and Mechanical Property of Laser Brazing of Galvanized Steel in a Flange Butted Configuration

SSRN

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SSRN 2024年

作者： Yan, Fei Zhang, Mengtao Chen, Hongsheng Ouyang, Gang Peng, Sanwen Chen, Hao Huang, Bingyu Zhang, Dingrui Yang, Guangyuan Xiang, Xinyi Zhang, Qian Wang, Chunming Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China School of Computer Science and Technology Hubei University of Science and Technology Xianning437100 China School of Mechanical Science and Engineering Huazhong University of Science and Technology Wuhan430074 China Wuhan University of Technology China Huazhong University of Science and Technology China

In this study, hot-dip galvanized steel sheet was joined in a flange butted configuration using laser brazing with CuSi3 filler metal. An orthogonal test involving four factors and five levels was experimentally designed to ascertain the optimal parameters and analyze the impact of welding factors on weld characteristics. The morphology, microstructure and mechanical property of laser brazed joints were carefully investigated using an optical microscope, scanning electron microscope equipped with energy spectrum analysis and other methodologies. The results showed that a joint with good forming quality was successfully achieved under the optimized brazing parameters. Welding speed was the most important factor affecting weld cross-section difference in the width, followed by defocusing amount, laser power and feeding speed. The microstructure near the fusion line was transformed from fine equiaxed grains to coarse columnar grains due to the fast cooling rate of the molten pool during solidification. The formation of wedge-shaped structures played a pinning role, which greatly enhanced the binding force at the interface. It has been also found that the occurrence of the composition segregation in the brazed joint increased the cracking susceptibility, thereby lowering the load capacity of the joint. The tensile strength of improved joints was obviously higher than that of the base metal. It was mainly credited to good surface forming and pinning effect of wedge-shaped structures under the optimized conditions. © 2024, The Authors. All rights reserved.

关键词： Welds

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Erratum to:Microstructure and texture evolution of nonoriented silicon steel during the punching process

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International Journal of Minerals,Metallurgy and Materials 2023年第6期30卷 1225-1225页

作者： Xiang Fang Wei Wang François Brisset Anne-Laure Helbert Thierry Baudin School of Automotive Engineering Wuhan University of TechnologyWuhan 430070China Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of TechnologyWuhan 430070China Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan University of TechnologyWuhan 430070China Hubei Research Center for New Energy&Intelligent Connected Vehicle Wuhan University of TechnologyWuhan 430070China Institut de Chimie Moléculaire et des Matériaux d’Orsay UniversitéParis-SaclayCNRS91405 OrsayFrance

The original online version of this article unfortunately contained a *** author’s name in the original online version is incorrect,which is:Xiang Fang,Wei Wang,François Brisset,Anne-Laure Helberg,and Thierry Ba... 详细信息

关键词： Microstructure steel evolution

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Simulation tools integration for multiscale modeling of adsorptive hydrogen storage system

Simulation tools integration for multiscale modeling of adso...

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第五届世界氢能技术大会(WHTC2013)

作者： Feng Ye Jinsheng Xiao Pierre B(e)nard Richard Chahine School of Mathematics and Computer Science Jianghan University Hubei 430056 China Hubei Key Laboratory of Advanced Technology for Automotive Components School of Automotive Engineering Wuhan University of Technology Hubei 430070 China Hubei Key Laboratory of Advanced Technology for Automotive Components School of Automotive Engineering Wuhan University of Technology Hubei 430070 China Hydrogen Research Institute Universit(e)du Qu(e)bec(a)Trois-Rivi(e)res QC G9A 5H7 Canada Hydrogen Research Institute Universit(e)du Qu(e)bec(a)Trois-Rivi(e)res QC G9A 5H7 Canada

This presentation considers the hydrogen storage system as the study object,has developed multi-scale simulation platform integrated with Fluent,Comsol and Matlab/Simulink softwares,and has built the association among... 详细信息

关键词： hydrogen storage adsorption multiscale modeling interface design software integration

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Two-stage space construction for real-time modeling of distributed parameter systems under sparse sensing

arXiv

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arXiv 2023年

作者： Wei, Peng School of Automation Wuhan University of Technology No.122 Luoshi Road Hubei Wuhan430070 China Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China Department of Systems Engineering City University of Hong Kong Tat Chee Avenue Kowloon 999077 Hong Kong

Numerous industrial processes can be defined using distributed parameter systems (DPSs). This study introduces a two-stage spatial construction approach for real-time modeling of DPSs in cases of limited sensors. Initially, a discrete space-completion approach is created to recuperate the spatiotemporal patterns of non-monitored locations under sparse sensing. The high-dimensional space construction method is employed to derive continuous spatial basis functions (SBFs). The identification and adjustment of the nonlinear temporal model are carried out via the long short-term memory (LSTM) neural network. Eventually, the amalgamation of the derived SBFs and temporal model results in a spatially continuous model. The use of a cubic B-spline surface is validated as an effective solution for optimizing space construction in the sense of least squares approximation. Experimental tests conducted on a pouch-type Li-ion battery demonstrate the efficacy of the proposed modeling technique under sparse sensing. This work highlights the promise of sparse sensors in real-time full-space modeling for large-scale battery energy storage systems. Copyright © 2023, The Authors. All rights reserved.

关键词： Least squares approximations

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Knowledge-Wrapping Method for Prediction and Evaluation of Material Removal Behavior in Robotic Belt Grinding

SSRN

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SSRN 2023年

作者： Yang, Zeyuan Xu, Xiaohu Li, Jie Zhu, Dahu Yan, Sijie Ge, Shuzhi Sam Ding, Han School of Nursing China State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and Technology Wuhan430074 China The Institute of Technological Science Wuhan Universitiy 430072 China Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology 430070 China Department of Electrical and Computer Engineering National University of Singapore 117576 Singapore

Reliable prediction and evaluation of material removal (MR) is a continuing pursuit in the grinding process. Mechanistic and empirical MR models always suffer from inaccuracies and restricted applicability, whereas data-driven approaches remain deficient in sample dependence, generalization, and physical interpretability. This motivates us to develop a knowledge-wrapping method (KWM) to predict and characterize the material removal behavior in robotic belt grinding. A material removal profile mechanistic model (PHY) that suits the robotic belt grinding is first presented based on the Archard law and Hertzian theory. Next, the knowledge-wrapping kernel is designed to wrap the physical constraints into a form of kernel function by transforming the mechanistic and empirical models into a linear system while considering the distance from the maximum contact pressure point. The knowledge-wrapping kernel and the experimental data are then connected via a likelihood function constructed from the Bayesian perspective with the consideration of measuring noise, yielding a hybrid-driven learning process that preserves interpretability from PHY. Additionally, the sparse method and expectation-maximization (E-M) algorithm are implemented to prune the redundant weights and determine the optimal hyperparameters, respectively. Comparative experiments and MR mechanism interpretations are finally presented to demonstrate the effectiveness and superiority of the proposed method. © 2023, The Authors. All rights reserved.

关键词： Robotics

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Research on dynamic modeling method of clearance joint based on 1D-CNN

Research Square

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Research Square 2021年

作者： Liu, Zhen Hu, Sanbao Hu, Junhua Xiang, Chao Fang, Zhigang School of Automotive Engineering Wuhan University of Technology Wuhan430070 China Hubei Provincial Key Laboratory of Advanced Technology of Automotive Components Wuhan University of Technology Wuhan430070 China Hubei Provincial Collaborative Center for Automotive Component Technology Wuhan University of Technology Wuhan430070 China Wuhan Second Ship Design and Research Institute Wuhan430064 China

The contact force of the clearance joints in the mechanical system is strongly nonlinear, which is influenced by the amount of clearance, the material property of the parts and the contact state during movement. In some fields which need to control the dynamic response of mechanical system accurately, it is very important to predict the contact process of clearance joints and the time-frequency characteristics of contact force. In this paper, a dynamic modelling method combining neural network model and co-simulation technology is proposed, which can effectively model and simulate the mechanical system with clearance. The contact friction data set is generated based on the friction experiment of sliding bearing, and the contact collision force data set is generated based on the theoretical model of impact force. The nonlinear contact force neural network model of clearance joints is constructed by deep learning method, and transplanted to Simulink. According to the 3D model of transmission test bench, the dynamic simulation model of mechanical system is established by using ADAMS, and the fusion of neural network model and traditional dynamics model is finally realized based on Simulink/ADAMS co-simulation technology. The creativity of this method lies in the use of neural network model to describe the clearance joints and the use of ideal constraints to describe other kinematic pairs. The combination of force and constraint can not only improve the accuracy of solution, but also ensure the fast calculation speed, which provides a feasible idea for the application of deep learning method in the direction of nonlinear system dynamics modelling. © 2021, CC BY.

关键词： Neural network models

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Thermally Stable Gradient Nanostructured M50 Bearing Steel by High-Density Dislocation Cells with Solute Segregation and Nanoscale Precipitation

SSRN

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SSRN 2022年

作者： Yue, Xiong Wang, Xiaokang Hu, Shan Yin, Fei Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan University of Technology Wuhan430070 China School of Automotive Engineering Wuhan University of Technology Wuhan430070 China School of Mechanical Engineering Purdue University West LafayetteIN47907 United States School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China

Thermal stability of gradient ultrafine grains/nanograins steels are of critical importance for applications. Here, a thermally stable gradient nanostructured M50 bearing steel composed of gradient lath martensite/grain, retained austenite, and carbides were prepared by USP technology and annealing treatments. Some intragranular dislocations annihilate, and grain boundaries dislocation multiplication and entanglement due to thermal activation and strain of the gradient layer after annealing at 350 °C for 30 min. And Fe, Cr, and C elements are further segregated to form high-density dislocation cells (~300 nm) at the triple junctions with smaller and more dispersed nanoscale precipitates/clusters. Compared with samples annealed at 350 °C and 450 °C for 30 min, the average grain size of samples continues annealed at 350 °C for 100 h increased by only 3.2% and 1.4%, while the microhardness of the top surface decreased by only 1.1% and 1.5%. High-density dislocation cells with solute segregation and nanoscale precipitation are critical for the high thermal stability and high microhardness of gradient nanostructured M50 steel. It provides a novel approach to developing stable nanostructured martensitic high-strength bearing steel. © 2022, The Authors. All rights reserved.

关键词： Microhardness

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Numerical modelling and experimental approach for shot velocity evaluation during ultrasonic shot peening

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International Journal of Computational Materials Science and Surface Engineering 2015年第2期6卷 97-110页

作者： Yin, Fei Han, Qingyou Rakita, Milan Wang, Meng Hua, Lin Wang, Chuansheng Department of Mechanical Engineering Technology Purdue University 401 North Grant Street West LafayetteIN47906 United States Hubei Key Laboratory of Advanced Technology of Automotive Components Wuhan University of Technology Wuhan430070 China Special Equipment Supervision and Inspection Center of Ma'Anshan City Anhui Province243000 China

Ultrasonic shot peening is a process of surface treatment which enhances mechanical properties of materials by inducing compressive residual stresses in the surface layer. As one of the most important process parameters during ultrasonic shot peening, shot velocity significantly affects the extent of plastic deformation and the microstructure formed on the surface of treated material. Due to the high frequency of change in the magnitude and direction, shot velocity is complicated to calculate exactly. For that reason, it is usually simplified as a constant. In this study, the velocity of a single shot during ultrasonic shot peening is measured experimentally using a high speed camera, and computed with theoretical model. The proposed mathematical model simulates the impact behaviour of a single shot during ultrasonic shot peening by introducing the restitution coefficient. Research results indicate that the shot velocity calculated by the proposed model agrees well with the experimental results. In addition, the effect of the ultrasonic shot peening parameters on the shot velocity was investigated. Research results will provide reliable technique instructions for the parametrical design of the ultrasonic shot peening technique. Copyright © 2015 Inderscience Enterprises Ltd.

关键词： Velocity

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