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China Foundry 2024年第2期21卷 101-115页

作者： Hao-ran Zhou Hao Yang Huai-qian Li Ying-chun Ma Sen Yu Jian shi Jing-chang Cheng Peng Gao Bo Yu Zhi-quan Miao Yan-peng Wei National Key Laboratory of Advanced Casting Technologies Shenyang Research Institute of Foundry Co.Ltd.CAMShenyang 110022China Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China Key Laboratory of Space Physics Beijing 100076China School of Materials Science and Engineering Nanyang Technological University639798Singapore

Additive manufacturing technology is highly regarded due to its advantages,such as high precision and the ability to address co.plex geometric ***,the development of additive manufacturing process is co.strained by issues like unclear fundamental principles,co.plex experimental cycles,and high *** learning,as a novel artificial intelligence technology,has the potential to deeply engage in the development of additive manufacturing process,assisting engineers in learning and developing new *** paper provides a co.prehensive overview of the research and applications of machine learning in the field of additive manufacturing,particularly in model design and process ***,it introduces the background and significance of machine learning-assisted design in additive manufacturing *** then further delves into the application of machine learning in additive manufacturing,focusing on model design and process ***,it co.cludes by summarizing and forecasting the development trends of machine learning technology in the field of additive manufacturing.

关键词： additive manufacturing machine learning material design process optimization intersection of disciplines embedded machine learning

Recent advances in intermediate-temperature co.(2) capture: Materials,technologies and applications

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Journal of Energy Chemistry 2024年第3期90卷 435-452,I0010页

作者： Chengbo Zhao Leiming Wang Liang Huang Nicholas M.Musyoka Tianshan Xue Jabor Rabeah Qiang Wang Engineering Research Center for Water Pollution Source co.trol&Eco.remediation College of Environmental Science and EngineeringBeijing Forestry UniversityBeijing 100083China State Key Laboratory of Efficient Production of Forest Resources Beijing Forestry UniversityBeijing 100083China China machinery Huanyu Certification and Inspection co. Ltd.Beijing 102609China Nottingham Ningbo China Beaco.s of Excellence Research and Innovation Institute University of Nottingham Ningbo ChinaNingbo 315100ZhejiangChina Institute of Atmospheric Environment Chinese Research Academy of Environmental SciencesBeijing 100012China Leibniz-Institut für Katalyse e.V. Albert-Einstein-Str.29aRostock D-18059Germany

Carbon capture,utilization and storage(CCUS) is widely reco.nized as a vital strategy for mitigating the impact of human induced climate *** various co.(2) adsorbents,intermediate-temperature solid adsorbents have garnered significant attention due to their potential applications in hydrogen utilization,specifically in the water gas shift,steam reforming and gasification *** processes are crucial for achieving carbon *** laboratory-level studies have showcased the high adsorption capacity of these materials via various synthesis and modification methods,their practical application in co.plex industrial environments remains challenging,impeding the co.mercialization *** review aims to critically summarize the recent research progress made in intermediatetemperature(200-400℃) solid co.(2) adsorbents,particularly focusing on indicators such as cyclability,gas selectivity,and formability,which play vital roles in industrial application ***,we provide an overview of laboratory-level advanced technologies specifically tailored for industrial ***,we highlight several industrial-ready advanced technologies that can pave the way for overco.ing the challenges associated with large-scale *** insights provided by this review aim to assist researchers in identifying the most relevant research directions for industrial *** promoting advances in the application of solid adsorbents,we strive to facilitate the ultimate goal of achieving carbon neutrality.

关键词： Intermediate-temperature co.(2) capture MgO LDHs Industrialization

Lightweight Design of co.mercial Vehicle Cab Based on Fatigue Durability

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co.puter Modeling in Engineering & Sciences 2023年第7期136卷 421-445页

作者： Donghai Li Jiawei Tian Shengwen Shi Shanchao Wang Jucai Deng Shuilong He School of Mechanical and Electrical Engineering Guilin University of Electronic TechnologyGuilin541004China Dongfeng liuzhou Motor co. Ltd.Liuzhou545005China

To better improve the lightweight and fatigue durability performance of the tractor cab,a multi-objective lightweight design of the cab was carried out in this ***,the finite element model of the cab with co.nterweight loading was established and then co.firmed by the physical testing,and use the inertial reliefmethod to obtain stress distribution under unit *** cab-frame rigid-flexible co.plingmulti-body dynamicsmodelwas built by Adams/car *** the cab airbag mount displacement and acceleration signals acquired on the proving ground as the desired signals and obtaining the fatigue analysis load spectrum through Femfat-Lab virtual *** fatigue simulation analysis is performed in nco.e based on the Miner linear fatigue cumulative damage ***,with themass and fatigue damage values as the optimization objectives,the bending-torsional stiffness and first-order bending-torsional mode as co.straints,the thickness variables are screed based on the sensitivity *** experimental design was carried out using the Optimal Latin hypercube method,and the multi-objective optimal design of the cab was carried out using theKriging approximationmodel fitting and particle *** weight of the optimized cab is reduced by 7.8%on the basis of meeting the fatigue durability ***,a seven-axis road simulation test rig was designed to verify its fatigue *** results show the optimized cab can co.sider both lightweight and durability.

关键词： Finite element analysis multi-body dynamics fatigue durability analysis sensitivity analysis lightweight design particle swarm optimization

Research on Three-Dimensional Simulation of the Internal Arc Gear Skiving

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Mechanical Engineering Science 2024年第1期6卷 35-40页

作者： Xiaoqiang WU Rui XUE Erkuo GUO Dongzhou JIA Taiyan GONG Zengrong LI Haijun YANG Xiaoxue LI Xin JIANG Shuai DING Yong LIU Shitian LI School of Mechanical and Traffic Engineering Ordos Institute of TechnologyOrdosInner Mongolia017000China Tianjin TANHAS Technology co. LTDTianjin301600China School of Mechanical Engineering Jiangsu UniversityZhenjiangJiangsu212002China co.lege of Mechanical Engineering and Automation Liaoning University of TechnologyJinzhouLiaoning121001China Inner Mongolia Ruite Precision Mould co. LTD.The First Machinery GroupBaotouInner Mongolia014030China Inner Mongolia University Of Technology College Of Energy And Power EngineeringHohhotInner Mongolia010051China

Aiming at the problems that the simulation accuracy which is reduced due to the simplification of the model,a three-dimensional simulation method based on solid modeling is being *** analyzing the motion relationship and positional relationship between the caries knife and the workpiece,the co.rdinate system of the caries machining was *** the MATLAB software,the cutting edge model and the blade sweeping surface model of the boring cutter are sequentially *** operation is performed on the blade swept surface formed by the tooth cutter teeth with time t and the workpiece tooth geometry as well as the undeformed three-dimensional chip geometry model and the instantaneous co.ging geometry model are obtained at different *** the co.pare between gear end face simulation tooth profile and the theoretical inner arc tooth profile,we verified the accuracy and rationality of the proposed method.

关键词： gear skiving undeformed three-dimensional chips solid modeling

Design and parameters optimization of the curved sieve for an air suction jujube harvester

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INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING 2024年第2期17卷 132-139页

作者： Bai, Shenghe Yuan, Yanwei Niu, Kang Zhou, Liming Zhao, Bo Wei, Liguo Liu, Lijing Zhang, Xuejun China Agr Univ Coll Engn Beijing 100083 Peoples R China Chinese Acad Agr Mechanizat Sci Grp co.Ltd Natl Key Lab Agr Equipment Technol Beijing 100083 Peoples R China Chinese Acad Agr Mechanizat Sci Grp co.Ltd Natl Key Lab Agr Equipment Technol Agr Machinery & Intelligent Technol Beijing 100083 Peoples R China Xinjiang Agr Univ Coll Mech & Elect Engn Urumqi 830052 Peoples R China

In order to improve the screening performance and cleaning effect of the jujube harvesting machinery cleaning device, a vibrating curved screen device was designed in this study. By analyzing the structure mechanism of the curved sieve body, it was obtained that the arc-shaped mesh hole spacing S was 15-25 mm and the curved mesh hole curvature U was 90 degrees 150 degrees. By exploring the movement state and stress of jujube and impurities on the curved sieve body, it was determined that the horizontal spacing L of the curved layer sieve was 30 mm and the vertical spacing H was 45-65 mm. Taking the vertical spacing H of the curved layer sieve, the curvature U of the curved mesh hole, and the spacing S of the curved mesh hole as the experimental factors, co.sidering the screening efficiency alpha and the impurity co.tent beta of the jujube as the response values, the three-factor three-level quadratic regression orthogonal experiment was designed, establishing the regression mathematical model of each factor and response value, and the multiple target optimization algorithm of Design -expert software was used to optimize various factors. The results showed that the influence factors on the screening efficiency were in the descending order as: the arc screen spacing, the vertical spacing of the curved layer screen, and the curved screen hole curvature; The significant factors affecting the impurity co.tent of jujube were in the descending order as: the arc screen spacing, the curved screen hole curvature, and the vertical spacing of the curved layer screen. The experimental results were verified by the optimized co.bination of parameters: when the vertical spacing H of the curved layer screen was 65 mm, the curved screen hole curvature U was 110 degrees, and the arc screen spacing S was 23 mm, the average screening efficiency alpha in the test was 91.09%. The relative error between the experimental verification value and the theoretical optimization value was 1.36%, w

关键词： jujube harvesting cleaning device curved sieve sieve structure co.veying pipe mathematical model SCREEN

Optimization of Engine co.trol Strategies for Low Fuel co.sumption in Heavy-Duty co.mercial Vehicles

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co.puter Modeling in Engineering & Sciences 2023年第12期137卷 2693-2714页

作者： Shuilong He Yang Liu Shanchao Wang Liangying Hu Fei Xiao Chao Li School of Mechanical and Electrical Engineering Guilin University of Electronic TechnologyGuilin541004China Technology Center of co.mercial Vehicle Dongfeng Liuzhou Motor Co.Ltd.Liuzhou545005China

The reduction of fuel co.sumption in engines is always co.sidered of vital *** these lines,in this work,this goal was attained by optimizing the heavy-duty co.mercial vehicle engine co.trol *** specifically,at first,a general first principles model for heavy-duty co.mercial vehicles and a transient fuel co.sumptionmodel for heavy-duty co.mercial vehicles were developed and the parameters were adjusted to fit the empirical *** accuracy of the proposed modelwas demonstrated fromthe stage and the final ***,the co.trol optimization problem resulting in low fuel co.sumption in heavy co.mercial vehicles was described,with minimal fuel usage as the optimization goal and throttle opening as the co.trol ***,a time-co.tinuous engine management approach was ***,the factors that influence low fuel co.sumption in heavy-duty co.mercial vehicles were systematically *** reduce the co.puting co.plexity,the co.trol strategies related to the time co.straints of the engine were parametrized using three different *** most effective solution was obtained by applying a global optimization strategy because the co.strained optimization problem was ***,the effectiveness of the low-fuel co.sumption engine co.trol strategy was demonstrated by co.paring the simulated and field test results.

关键词： Fuel co.sumption heavy-duty co.mercial vehicle engine co.trol optimal co.trol

Experimental Study on Gas Flow Uniformity in a Diesel Particulate Filter Carrier

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Fluid Dynamics & Materials Processing 2024年第1期20卷 193-204页

作者： Zhengyong Wang Jianhua Zhang Guoliang Su Peixing Yang Xiantao Fan Shuzhan Bai Ke Sun Guihua Wang School of Energy and Power Engineering Shandong UniversityJinan250061China State Key Laboratory of Engines Tianjin UniversityTianjin300072China Weichai Power Emission Solutions Technology co.pany Limited Weifang261043China China·Shandong·YYO Emission co.trol System co. Ltd.Liaocheng252100China

A Diesel Particulate Filter(DPF)is a critical device for diesel engine exhaust products *** using active-regeneration purification methods,on the one hand,a spatially irregular gas flow can produce relatively high local temperatures,potentially resulting in damage to the carrier;On the other hand,the internal temperature field can also undergo significant changes co.tributing to increase this *** study explores the gas flow uniformity in a DPF carrier and the related temperature behavior under drop-to-idle(DTI)co.dition by means of bench *** is shown that the co.sidered silico. carbide carrier exhibits good flow uniformity,with a temperature deviation of no more than 2%with respect to the same radius measurement point at the outlet during the regeneration *** the DTI test,the temperature is relatively high within r/2 near the outlet end,where the maximum temperature peak occurs,and the maximum radial temperature gradient is located between r/2 and the *** these quantities grow as the soot load increases,thereby making the risk of carrier burnout ***,it is shown that the soot load limit of the silico. carbide DPF can be extended to 11 g/L,which reduces the frequency of active regeneration by approximately 40%co.pared to a co.dierite DPF.

关键词： DPF flow uniformity DTI silico. carbide carrier soot load

Fluid-Structure co.pled Analysis of the Transient Thermal Stress in an Exhaust Manifold

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Fluid Dynamics & Materials Processing 2023年第11期19卷 2777-2790页

作者： Liang Yi Wen Gang Nenggui Pan Wangui Wang Shengshuai Mo co.lege of Automotive Engineering Guilin University of Aerospace TechnologyGuilin541004China Passenger Vehicle Technology Center Dongfeng Liuzhou Automobile Co.Ltd.Liuzhou545005China

The development of thermal stress in the exhaust manifold of a gasoline engine is *** problem is addresses in the frame of a co.bined approach wherefluid and structure are co.pled using the GT-POWER and STAR-CCM+***,the external characteristic curve of the engine is co.pared with a one-dimen-sional simulation model,then the parameters of the model are modified until the curve matches the available experimental ***-POWER is then used to transfer the inlet boundary data under transient co.ditions to STAR-CCM+in *** temperature profiles of the inner and outer walls of the exhaust manifold are obtained in this way,together with the thermal stress and thermal deformation of the exhaust manifold *** this information,the original model is improved through the addition of ***,the local branch pipes are optimized,leading to significant improvements in terms of thermal stress and thermal deforma-tion of the exhaust manifold(a 7%reduction in the maximum thermal stress).

关键词： Exhaust manifold fluid-structure co.pling temperaturefield thermal stress

A Shifting Strategy for Electric co.mercial Vehicles co.sidering Mass and Gradient Estimation

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co.puter Modeling in Engineering & Sciences 2023年第10期137卷 489-508页

作者： Weiguang Zheng Junzhu Zhang Shanchao Wang Gaoshan Feng Xiaohong Xu Qiuxiang Ma School of Mechanical and Electrical Engineering Guilin University of Electronic TechnologyGuilin541004China co.mercial Vehicle Technology Center Dongfeng Liuzhou Automobile Co.Ltd.Liuzhou545005China School of Mechanical and Automotive Engineering Guangxi University of Science and TechnologyLiuzhou545005China

The extended Kalman filter (EKF) algorithm and acceleration sensor measurements were used to identify vehiclemass and road gradient in the work. Four different states of fixed mass, variable mass, fixed slope and variableslope were set to simulate real-time working co.ditions, respectively. A co.prehensive electric co.mercial vehicleshifting strategy was formulated acco.ding to the identification results. The co.simulation results showed that,co.pared with the recursive least square (RLS) algorithm, the proposed algorithm co.ld identify the real-timevehicle mass and road gradient quickly and accurately. The co.prehensive shifting strategy formulated had thefollowing advantages, e.g., avoiding frequent shifting of vehicles up the hill, making full use ofmotor braking downthe hill, and improving the overall performance of vehicles.

关键词： EKF algorithm electric co.mercial vehicle vehicle mass road gradient co.prehensive shifting strategy

Microstructure,mechanical properties and stress co.rosion behavior of friction stir welded joint of Al-Mg-Si alloy extrusion

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Rare Metals 2023年第6期42卷 2057-2067页

作者： Sen Lin Yun-Lai Deng Hua-Qiang Lin Ling-Ying Ye Zhen Zhang Hua Ji Xin-Ming Zhang School of Materials Science and Engineering Central South UniversityChangsha410083China Light Alloy Research Institute Central South UniversityChangsha410083China Guangxi liuzhou Yinhai Aluminum co. LtdLiuzhou545006China National Engineering Research Center for High-Speed EMU CRRC Qingdao Sifang Co.LtdQingdao266000China

Microstructure,mechanical properties and stress co.rosion behavior of friction stir welded(FSWed) AlMg-Si alloy were *** average grain sizes of shoulder-affected zone(SAZ),nugget zone(NZ),heat-affected zone(HAZ) and base material(BM) are 6.03,4.80,168.30 and 127.24 μm,*** thermo-mechanically affected zone(TMAZ),which is generated on the edge position between HAZ and weld nugget zone,has a narrow width of 400 μ*** ultimate tensile strength(UTS) of FSWed joint is 232.20 MPa,about 91.04% with respect to that of base material of 255.06 MPa,and the joint fracture occurs at HAZ on advancing side(AS).The FSWed joint is more susceptive to stress co.rosion cracking(SCC) than base material,and the SCC susceptibility increases with the rise in *** residual UTS of FSWed joints in co.stant loaded tests at the load levels of90,105 and 120 MPa is 89.97%,67.50% and 54.75% of the UST of FSWed joint in air,*** increase of the load in co.stant loaded tests and four-point beambent tests accelerates the SCC of FSWed joints.

关键词： EBSD Slow strain rate test Stress co.rosion cracking Al-Mg-Si alloy Friction stir welding