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Optimization of Cutting Parameters for Trade-off Among Carbon Emissions, Surface Roughness, and Processing Time

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Chinese Journal of Mechanical Engineering 2019年第6期32卷 124-141页

作者： zhipeng jiang Dong Gao Yong Lu Xianli Liu School of Mechatronics Engineering Harbin Institute of TechnologyHarbin 150001China State Engineering Laboratory of High Efficiency Cutting and Tool Harbin University of Science and TechnologyHarbin 150080China

As the manufacturing industry is facing increasingly serious environmental problems, because of which carbon tax policies are being implemented, choosing the optimum cutting parameters during the machining process is crucial for automobile panel dies in order to achieve synergistic minimization of the environment impact, product quality, and processing efficiency. This paper presents a processing task-based evaluation method to optimize the cutting parameters, considering the trade-off among carbon emissions, surface roughness, and processing time. Three objective models and their relationships with the cutting parameters were obtained through input–output, response surface, and theoretical analyses, respectively. Examples of cylindrical turning were applied to achieve a central composite design(CCD), and relative validation experiments were applied to evaluate the proposed method. The experiments were conducted on the CAK50135 di lathe cutting of AISI 1045 steel, and NSGA-Ⅱ was used to obtain the Pareto fronts of the three objectives. Based on the TOPSIS method, the Pareto solution set was ranked to find the optimal solution to evaluate and select the optimal cutting parameters. An S/N ratio analysis and contour plots were applied to analyze the influence of each decision variable on the optimization objective. Finally, the changing rules of a single factor for each objective were analyzed. The results demonstrate that the proposed method is effective in finding the trade-off among the three objectives and obtaining reasonable application ranges of the cutting parameters from Pareto fronts.

关键词： Automobile panel dies Carbon emission Parameter optimization Multi-objective optimization NSGA-Ⅱ

High-rate sodium metal batteries enabled by trifluormethylfullerene additive

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Nano Research 2022年第8期15卷 7172-7179页

作者： Pengju Li Xiaobo Huang zhipeng jiang Han Zhang Pengwei Yu Xing Lu Jia Xie State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Sodium metal is a promising anode for sodium batteries due to its high theoretical capacity and low ***,the serious Na dendrite growth and low Coulombic efficiency,especially at high current densities/cycling capacities,severely limit the application of sodium metal ***,trifluoromethylfullerene,C_(60)(CF_(3))_(6),is designed as an electrolyte additive to enable the high-rate cycling of sodium metal anodes with high Coulombic *** CF3 groups contribute to the formation of stable NaF-rich solid electrolyte interface layer,while C_(60)cages induce the uniform distribution of sodium ions and promote the formation of smooth and compact ***,Na||Cu cell with C_(60)(CF_(3))_(6)can be cycled at 2 mA·cm^(−2)and 10 mAh·cm^(−2)over 180 cycles with an average Coulombic efficiency of 99.9%,and Na||Na cell can be cycled at 10 mA·cm^(−2)over 600 ***,Na||NaV2(PO_(4))_(3)@C full cell exhibits high capacity retention of 84%over 2,000 cycles at 20 C(~3 mA·cm^(−2)).

关键词： sodium metal anode fullerene trifluormethylfullerene high rate electrolyte additive

Drilling process of indexable drill bit based on Coupled Eulerian-Lagrangian method:A simulation study

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Chinese Journal of Aeronautics 2024年第11期37卷 477-492页

作者： Desheng HU Caixu YUE Xianli LIU zhipeng jiang Yongshi XU Junhui LU Steven Y.LIANG Key Laboratory of Advanced Manufacturing and Intelligent Technology Ministry of EducationHarbin University of Science and TechnologyHarbin 150080China George W.Woodruff School of Mechanical Engineering Georgia Institute of TechnologyAtlanta 30332USA

42CrMo steel has the characteristics of high strength,high wear resistance,high impact resistance,and fatigue ***,drilling 42CrMo steel has always been a challenging *** indexable drill bit has the advantages of high processing efficiency and low processing cost and has been widely used in the field of aerospace hole *** better understand the machining mechanism of the indexable drill bit,this paper uses the Coupled EulerianLagrangian method(CEL)to simulate the three-dimensional drilling model for the first *** simulation results of the drilling force obtained by the CEL method and Lagrangian method are compared with the experimental *** is verified that the CEL method is easy to converge and can avoid the problem of program interruption caused by mesh distortion,and the CEL simulation value is more consistent with the actual ***,the simulation results of cutting force and blade cutting edge node temperature under different process parameters are *** variation of time domain cutting force,frequency domain cutting force and tool temperature with process parameters are *** study provides a new method for the prediction of cutting performance and the optimization of process parameters of indexable drills.

关键词： 42CrMo steel Coupled EulerianLagrangian method Indexable drill bit Drilling force Process parameters

Anion-Regulated Weakly Solvating Electrolytes for High-Voltage Lithium Metal Batteries

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Energy & Environmental Materials 2023年第6期6卷 259-265页

作者： zhipeng jiang Jisheng Mo Chen Li Haiwen Li Qingan Zhang Ziqi Zeng Jia Xie Yongtao Li School of Materials Science and Engineering&Low-Carbon New Materials Research Center Anhui University of TechnologyMaanshan 243002China Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials of Ministry of Education Anhui University of TechnologyMaanshan 243002China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China Hefei General Machinery Research Institute Hefei 230031China

Development of advanced high-voltage electrolytes is key to achieving high-energy-density lithium metal batteries(LMBs).Weakly solvating electrolytes(WSE)can produce unique anion-driven interphasial chemistry via altering the solvating power of the solvent,but it is difficult to dissolve the majority of Li salts and fail to cycle at a cut-off voltage above 4.5 ***,we present a new-type WSE that is regulated by the anion rather than the solvent,and the first realize stable cycling of dimethoxyethane(DME)at 4.6 V without the use of the“solvent-in-salt”*** relationships between the degree of dissociation of salts,the solvation structure of electrolytes,and the electrochemical performance of LMBs were systematically *** found that LiBF_(4),which has the lowest degree of dissociation,can construct an anion-rich inner solvation shell,resulting in anion-derived anode/cathode *** to such unusual solvation structure and interphasial chemistry,the Li-LiCoO_(2)full cell with LiBF_(4)-based WSE could deliver excellent rate performance(115 mAh g^(-1)at 10 C)and outstanding cycling stability even under practical conditions,including high loading(10.7 mg cm^(-2)),thin Li(50μm),and limited electrolyte(1.2μL mg^(-1)).

关键词： high-voltage LiCoO_(2) lithium metal batteries solvation structure weakly solvating electrolyte

Research on the relaxor ferroelectric single crystal flexural beam vector hydrophone

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Chinese Journal of Acoustics 2016年第4期35卷 497-507页

作者： YIN Yilong LI Junbao jiang zhipeng Institute of Acoustics Chinese Academy of Sciences

A two-dimensional vector hydrophone was developed utilizing the PMN-PT relaxor ferroelectric single crystal,which is composed of a dual-axis piezoelectric composite flexural beam accelerometer and PZT-5 piezoelectric ceramic *** on the principle of elastic mechanics and underwater particle velocity measurement,the receiving voltage sensitivity of the flexural beam vector hydrophone is *** influence of stress distribution in the flexural beam on the performance of hydrophones is analyzed,and the match between PMNPT single crystal cells and the structure of flexural beam is *** tested results indicate that the PMN-PT hydrophone presents an 11 dB increase in sensitivity and a 3 dB decrease in self-noise than the PZT-5 one.

关键词： PMN PT Research on the relaxor ferroelectric single crystal flexural beam vector hydrophone

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基坑开挖方式对轨道交通结构变形影响分析

铁道工程学报 2019年第6期36卷 86-90页

作者：江智鹏中铁第四勘察设计院集团有限公司

研究目的:随着城市的不断发展,城市内地铁线路的建设越来越多,不可避免地会有大量基坑建设紧邻已建或在建的地铁车站或区间隧道,地铁深基坑的开挖工程对周边已有地铁建筑的相互影响也日益突出。本文以苏州轨道交通1号线星海街站为例,通... 详细信息

研究目的:随着城市的不断发展,城市内地铁线路的建设越来越多,不可避免地会有大量基坑建设紧邻已建或在建的地铁车站或区间隧道,地铁深基坑的开挖工程对周边已有地铁建筑的相互影响也日益突出。本文以苏州轨道交通1号线星海街站为例,通过对车站两侧基坑的两种不同开挖工况进行数值计算,分析基坑对称开挖与非对称开挖对已有轨道交通的变形影响,拟获取不同开挖方式工况下对既有地铁车站结构变形影响的基本规律。研究结论:(1)基坑开挖对地铁车站结构变形的影响主要体现在垂直地铁轴线方向的变形及竖向沉降;(2)相对于非对称开挖,基坑对称开挖对地铁车站结构的变形影响较小;(3)从对地铁车站结构变形影响最小化的角度来看,当具备对称开挖基坑条件时,建议采取两侧基坑同时开挖的方法;(4)本研究成果可为今后地铁安全评估提供参考。

关键词：对称基坑基坑开挖轨道交通结构变形

An Enhanced Difference Method for Multi-objective Model of Cellular Base Station Antenna Configurations

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Communications and Network 2013年第3期5卷 361-366页

作者： Xiaofei Wang zhipeng jiang Suixiang Gao School of Mathematical Sciences University of CAS Beijing China

In this paper, we propose a fine-grained grid-based multi-objective model which aims at optimizing base station antennas' configurations, such as transmit power, antenna tilt and antenna azimuth, in order to upgrading network performance in cellular networks. As the model is non-convex, non-smooth and discrete and computationally expensive, we use decomposition method to solve the MOP problem. We mainly focus on addressing the scalarized sub-problem after decomposition. For the scalarized sub-problem, we propose an enhanced difference method. First, difference of each component is calculated, which provides the guidance of optimization. Then an OPSO is applied to search the optimal step length. The method is applied to GSM network optimization on an area in Beijing. The effect of the application shows that proposed method has a good performance, and is effective/efficient to solve mobile network optimization problems.

关键词： Mobile Network Optimization Multi-objective Optimization Decomposition Difference Method Particle Swarm Optimization

A New Placement Scheme of Distributed Generation in Power Grid

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Energy and Power Engineering 2013年第4期5卷 740-745页

作者： zhipeng jiang Tiande Guo Wei Pei Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing China Institute of Electrical Engineering Chinese Academy of Sciences Beijing China University of Chinese Academy of Sciences Beijing China

Smart grid gets more and more popular today. Distributed generation is one of the key technologies, and especially, the integration problem of the distributed generation is an important issue. Especially, the location and capacity of the distributed generation play an important role for the performance of the distribution network. In this paper, an optimization model to minimize the loss cost of the unsatisfied demand is given. This model is based on a reliability computing method which avoiding power flow calculation in a previous work. Then the model is used on the IEEE-123 nodes experiment network and a result of five distributed generation placement is got.

关键词： Smart Grid Distributed Generation Optimal Integration Optimization Model

Construction of functional neural network tissue combining CBD-NT3-modified linear-ordered collagen scaffold and TrkC-modified iPSC-derived neural stem cells for spinal cord injury repair

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Bioactive Materials 2024年第5期35卷 242-258页

作者： Zhaoping Wu Yi Zhou Xianglin Hou Weidong Liu Wen Yin Lei Wang Yudong Cao zhipeng jiang Youwei Guo Quan Chen Wen Xie Ziqiang Wang Ning Shi Yujun Liu Xiang Gao Longlong Luo Jianwu Dai Caiping Ren Xingjun jiang Department of Neurosurgery Xiangya HospitalCentral South UniversityChangshaHunan Province410008China National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangshaHunan Province410008China State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental Biology Chinese Academy of SciencesBeijing100080China School of Basic Medical Science Central South UniversityChangshaHunan Province410078China The NHC Key Laboratory of Carcinogenesis and the Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education Central South UniversityChangshaHunan Province410078China College of Biology Hunan UniversityChangsha410000China State Key Laboratory of Toxicology and Medical Countermeasures Beijing Institute of Pharmacology and ToxicologyBeijing100080China

Induced pluripotent stem cells(iPSCs)can be personalized and differentiated into neural stem cells(NSCs),thereby effectively providing a source of transplanted cells for spinal cord injury(SCI).To further improve the repair efficiency of SCI,we designed a functional neural network tissue based on TrkC-modified iPSC-derived NSCs and a CBD-NT3-modified linear-ordered collagen scaffold(LOCS).We confirmed that transplantation of this tissue regenerated neurons and synapses,improved the microenvironment of the injured area,enhanced remodeling of the extracellular matrix,and promoted functional recovery of the hind limbs in a rat SCI model with complete *** sequencing and metabolomic analyses also confirmed the repair effect of this tissue from multiple perspectives and revealed its potential mechanism for treating ***,we constructed a functional neural network tissue using human iPSCs-derived NSCs as seed cells based on the interaction of receptors and ligands for the first *** tissue can effectively improve the therapeutic effect of SCI,thus confirming the feasibility of human iPSCs-derived NSCs and LOCS for SCI repair and providing a valuable direction for SCI research.

关键词： Spinal cord injury Induced pluripotent stem cells LOCS Neural network tissue Neurotrophin-3