检索结果-内蒙古大学图书馆

2nd International Conference on New Materials, Machinery, and Vehicle Engineering, NMMVE 2023

作者： Min, Yanlei Zhuang, Wuhao Deng, Zushen Hubei Key Laboratory of Advanced Technology of Automotive Components Wuhan University of Technology Wuhan430070 China School of Automotive Engineering Wuhan University of Technology Wuhan430070 China

ISBN: (纸本)9781643684208

In this paper, the law of radial envelope forming (REF) of thin wall cylinder with vertical reinforcements is studied by finite element numerical simulation. First, a finite element model for REF of thin wall cylinder with vertical reinforcements is established by using Deform-3D software. Then, the evolution and distribution of strain and metal flow velocity during REF of thin wall cylinder with vertical reinforcements are analyzed, and the growth law of vertical reinforcement during this REF is analyzed in detail. The results show that radial compression strain, circumferential tensile strain and axial tensile strain occur in the web. Radial tensile strain, circumferential compressive strain and axial tensile strain occur in the vertical reinforcements. The metal flows mainly in radial direction and circumferential direction during REF of thin wall cylinder with vertical reinforcements. The vertical reinforcements show nonlinear growth, and the middle part of the vertical reinforcement is higher than both ends of the vertical reinforcement. © 2023 The authors and IOS Press.

关键词： Tensile strain

来源：评论

学校读者我要写书评

暂无评论

Functional ceramic support as an independent catalyst layer for direct liquid fuel solid oxide fuel cells

引用

Journal of advanced Ceramics 2023年第3期12卷 474-486页

作者： Jie Luo Kai Zhao Jishi Zhao Jun Li Yihui Liu Dongchu Chen Qing Xu Min Chen School of Materials Science and Hydrogen Energy Foshan UniversityFoshan 528000China Guangdong Key Laboratory for Hydrogen Energy Technologies Foshan UniversityFoshan 528000China Foshan Institute of Environment and Energy Technology Foshan 528000China R&D Center of Hydrogen Energy Standardization Yunfu 527300China Hubei Key Laboratory of Advanced Technology for Automotive Components&Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

A porous ceramic support is designed as a multi-functional independent catalyst layer for solid oxide fuel cells(SOFCs)running on liquid hydrocarbon *** layer consists of a highly porous Ce_(0.9)Ca_(0.1)O_(2−δ)ceramic backbone and active NiMo catalysts,which could be integrated into the conventional Ni metal containing the anode for internal reforming of the hydrocarbon *** to conventional catalyst layers sintered on the anodes,this independent catalyst layer could be simply assembled on top of the anode without additional sintering,thereby avoiding the mismatch of the thermal expansion coefficient between the catalyst layer and the anode and improving stability of a single ***,a current collector layer could be inserted between the catalyst and the anode to enhance current collection efficiency and electrochemical performance of the single *** 750℃,the independent catalyst layer displays high activity towards the catalytic decomposition of methanol,and the single cell could achieve the maximum power density of 400–500 mW·cm^(−2)in dry ***,by employing the independent catalyst layer,the single cell offers additional in-situ catalyst regeneration capability under the methanol operation *** 10 mL·min−1 air into an anode channel for 5 min is found to be effective to burn out carbon species in the catalyst layer,which reduces the degradation rate of the cell voltage by orders of magnitude from 2.6 to 0.024 mV·h−1 during the operation of 360 h in dry *** results demonstrate the significance of the independent catalyst layer design for direct internal reforming methanol fuel cells.

关键词： independent catalyst layer NiMo-Ce_(0.9)Ca_(0.1)O_(2−δ)catalyst internal reforming methanol solid oxide fuel cell(SOFC)

来源：评论

学校读者我要写书评

暂无评论

A Comparative Study of Equivalent Factor Optimization Based on Heuristic Algorithms for Hybrid Electric Vehicles

SAE International journal of Sustainable Transportation, Ene...

引用

SAE International journal of Sustainable Transportation, Energy, Environment, and Policy 2022年第2期3卷

作者： Zheng, Qingxing Tian, Shaopeng Wang, Wenbin Zhang, Qian Cai, Wen Wuhan University of Technology School of Automotive Engineering China Wuhan University of Technology Hubei Key Laboratory of Advanced Technology for Automotive Components China Hubei Collaborative Innovation Center for Automotive Components Technology China Wuhan University of Technology Hubei Research Center for New Energy & Intelligent Connected Vehicle China

The equivalent consumption minimization strategy (ECMS) is an instantaneous optimization method implemented online for hybrid electric vehicles (HEVs) to improve fuel economy. To fulfill the near-optimal performance of ECMS, equivalent factors (EFs) must be well tuned for different powertrains and driving cycles. This study proposes a hierarchical offline optimization framework which tunes the penalty value of state of charge (SOC) balance in the outer layer and optimizes EFs based on heuristic algorithms in the inner layer. A comprehensive analysis is conducted to evaluate three heuristic algorithms, including the genetic algorithm (GA), the nonlinear-inertia-decreasing particle swarm optimization algorithm (NLPSO), and the novel firefly algorithm (FA). The traversal optimization method (TOM) is chosen as the benchmark. Besides, a sensitivity analysis is carried out to reveal the impact of the penalty value on the battery SOC balance. The simulation results confirm that the battery SOC balance positively relates to the penalty value. However, the biggest penalty value is not always the optimal choice. The comparative results show that the GA and NLPSO can lessen 99.86% and 99.87% of the computational burden but increase the fuel consumption by 4.44% and 4.26%, respectively, compared to TOM. On the other hand, FA can reduce computational time by 99.87% with a 1.85% loss of fuel economy, which is superior to the other two heuristic algorithms in terms of optimality and computational cost. © 2022 SAE International.

关键词： Heuristic algorithms

来源：评论

学校读者我要写书评

暂无评论

The aging pattern of lithium-ion batteries based on experiments at different temperatures 3

The aging pattern of lithium-ion batteries based on experime...

引用

2024 3rd International Conference on Green Energy and Power Systems, ICGEPS 2024

作者： Cui, Yugang Wang, Xiao Zou, Shibo Wang, Qian Kang, Jianqiang Three Gorges Electric Energy Co. Ltd. Hubei Wuhan430000 China Hubei Key Laboratory of Advanced Technology for Automotive Components Hubei Wuhan430070 China School of Automation Wuhan University of Technology Hubei Wuhan430070 China

In this paper, we take an 18650-type LiFePO4 battery as the research object to investigate the aging mechanism of Li-ion batteries at different temperatures. The aging tests are conducted at 25°C, 35°C and 45°C. The results show that elevating the operating temperature can improve the cycle life of Li-ion batteries. The aging mechanism was analyzed by incremental capacity and electrochemical impedance spectrum analysis. The following conclusions were obtained: the aging mechanism of lithium-ion batteries mainly includes loss of lithium inventory, loss of active material, and conductivity loss, among which loss of lithium inventory and loss of active material are the main causes of Li-ion battery aging, and the contribution of conductivity loss is the smallest. Further analysis of the causes of battery aging by disassembling and testing the aging electrode sheet SEM and TEM shows that the aging of Li-ion battery is manifested by the rupture of graphite particles, the generation of SEI layer and lithium dendrite, and increasing the temperature can ease the rupture of graphite particles and the generation of lithium dendrite, thus improving the cycle life of the battery. © Published under licence by IOP Publishing Ltd.

关键词： Lithium-ion batteries

来源：评论

学校读者我要写书评

暂无评论

The Crystallization and Fracture Toughness of Transparent Glass-ceramics with Various Al_(2)O_(3) Additions for Mobile Devices

引用

Journal of Wuhan University of technology(Materials Science) 2022年第3期37卷 378-384页

作者： ZHENG Weihong LI Changqin YUAN Jian TIAN Peijing TENG Fei WANG Weizheng PENG Zhigang WANG Wei State Key Laboratory of Silicate Building Materials Wuhan University of TechnologyWuhan 430070China Shahe Research Institute of Glass Technology Shahe 054100China 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

Li_(2)O-Al_(2)O_(3)-SiO_(2)(LAS)glass-ceramics were prepared by a melting *** of different Al_(2)O_(3)content on the structure,crystallization,transmittance and fracture toughness of LAS glassceramics were investigated by means of XRD,FESEM and other methods as *** results showed that the glass transition temperature and crystallization temperature of samples increased as the content of Al_(2)O_(3)increased from 4.1 wt%to 13.1 wt%,which restrained the precipitation of lithium disilicate *** main crystalline phase of glass-ceramics transformed from lithium disilicate and petalite to silicon dioxide,which reduced the fracture toughness of *** the Al_(2)O_(3)content was 7.1 wt%,the specimen had outstanding transmittance and fracture *** transmittance was 90.32%.The fracture toughness was 1.13 MPa•m^(1/2).Compared with high-alumina glass,the fracture toughness of the glass-ceramic was greatly improved,and it could be used as a new type of protective material for mobile devices.

关键词： transparent glass-ceramics crystallization Al_(2)O_(3) lithium disilicate petalite

来源：评论

学校读者我要写书评

暂无评论

Optimization of porous transport layer for overall performance improvement in unitized regenerative fuel cell under clamping pressures

引用

Renewable Energy 2025年 251卷

作者： Chen, Ke Xiong, Zhongzhuang He, Dandi Luo, Zongkai Zou, Guofu Chen, Wenshang Chen, Ben Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan430070 China

The porous transport layer (PTL) in a Unitized Regenerative Fuel Cell (URFC) is essential for achieving high electrochemical performance and operational stability. It facilitates gas diffusion, regulates water-gas transport, and supports electrochemical reactions. Clamping pressure profoundly influences URFC performance by altering key properties such as porosity, permeability, electrical conductivity, and the contact resistance between the PTL and bipolar plate. Thus, the interplay between clamping pressure and the PTL is critical for optimizing URFC performance. This study focuses on investigating the effects of clamping pressure on URFC performance, uncovering key principles for optimizing PTL structural properties to enhance the overall performance of the URFC. Simulation results based on a two-dimensional finite element model and a three-dimensional two-phase electrochemical model reveal that clamping pressure induces asymmetric mechanical behavior in the PTL on either side of the URFC. As clamping pressure increases, significant changes occur in transport properties, which strongly affect mass transfer processes in the URFC. Furthermore, the study integrates Box-Behnken design, artificial neural networks, and the non-dominated sorting genetic algorithm-II method to develop a precise regression model for identifying optimal design solutions. Under the optimized configuration, the URFC's input power density and output power density increased by 4.08 % and 9.47 %, respectively, while the round-trip efficiency improved by 14.13 % compared to conventional configurations. © 2025 Elsevier Ltd

关键词： Diffusion in gases

来源：评论

学校读者我要写书评

暂无评论

Research on vehicle A-pillar visualization based on A-pillar detection and decision tree model 4

Research on vehicle A-pillar visualization based on A-pillar...

引用

2024 4th International Conference on Artificial Intelligence and Industrial technology Applications, AIITA 2024

作者： Yuan, Huan Sun, Jiaqi Zhang, Xiaoya Zhu, Yao Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China School of Textile Science and Engineering Wuhan Textile University Wuhan430070 China

When turning or passing through intersections, the vehicle's A-pillar blind spot may obscure road conditions. Using cameras to capture and display external images on the A-pillar screen can eliminate the A-pillar blind spot. However, this solution still faces a mismatch between the displayed screen image and the surrounding environment image. To obtain more accurate blind spot images, accurate blind spot cropping areas are calculated through vehicle A-pillar detection and image registration technology. By introducing eye position and posture as features and considering the corresponding blind spot cropping areas as target variables, a decision tree model is trained to predict the blind spot cropping areas. This model can rapidly and accurately predict the blind spot areas for display on the A-pillar screen, with an average pixel error of 12.7, a coefficient of determination of 0.85, and an image processing speed within one millisecond. Experiments show that the A-pillar blind spot visualization system based on A-pillar detection and decision tree model prediction effectively eliminates the A-pillar blind spot, enhancing driving safety. © Published under licence by IOP Publishing Ltd.

关键词： Image registration

来源：评论

学校读者我要写书评

暂无评论

Study on Effect of Ultrasonic Vibration on Adhesive-film Bonding of Al/CFRP Alloy Joints 9

Study on Effect of Ultrasonic Vibration on Adhesive-film Bon...

引用

2023 9th International Conference on Applied Materials and Manufacturing technology, ICAMMT 2023

作者： Wang, Hui Zhang, Chenkuo Chen, Yizhe Yang, Liu Li, Jianting Cao, Min Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China Hubei Longzhong Laboratory Hubei Xiangyang441000 China Guangrui Group Hubei Xiangyang441000 China

The adhesive film is solid at room temperature, and it is difficult to ensure the adhesion of the adhesive film to the adhered plate during the bonding process, resulting in poor bonding quality and difficult bonding quality control. Due to the need to solve this problem, this study proposed ultrasonic to improve the bonding quality. The ultrasonic mechanism to strengthen the adhesive-film bonded of AL/CFRP (carbon fiber reinforced composites) joints was investigated. The ultrasonic vibration was applied to the bonding area after the adhesive film was attached. A double-lap shear plate test revealed a 59.6% increase in bond strength and a 34.2% increase in bond quality stability. By analyzing the temperature and viscosity of the adhesive film after ultrasonic and observing the surface morphology of the cured joint, it was found that ultrasonic could reduce the film viscosity and improve the adhesive film fluidity. At the same time, the adhesive film was promoted to fill the irregular micro pits on the adherend surface, enhancing the mechanical anchoring effect between the adhesive and the adhered plate and thus improving the bonding quality. © Published under licence by IOP Publishing Ltd.

关键词： Fiber reinforced plastics

来源：评论

学校读者我要写书评

暂无评论

A method of generating car sounds based on granular synthesis algorithm

Noise Control Engineering Journal

引用

Noise Control Engineering Journal 2022年第4期70卷 384-393页

作者： Xie, Liping Lu, Chihua Liu, Zhien Zhu, Yawei Song, Weizhi Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan528200 China Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China

The active sound generation technique for automobiles, where car sounds can be synthesized by means of electronic sound production, is one of the effective methods to achieve the target sound. A method for active sound generation of automobile based on the granular synthesis algorithm is put forward here to avoid the broadband beating phenomena that occur due to the mismatch of parameters of sound granular signals. The comparison of the function expression of sound signal and Hilbert transformation is performed based on the principle of overlap and add;moreover, those parameters (phase, frequency and amplitude) of sound signals are interpolated by means of the Hermite interpolation algorithm which can ensure the continuity of the phase, frequency and amplitude curves. Thus, the transition audio is constructed by means of the sound signal function here to splice the adjacent sound granules. Our simulations show that our method can be applied to solve the current broadband beating issue for splicing sound granules and achieve natural continuity of synthesized car sounds. The subjective test results also indicate that our transition audio can produce high quality audio restitution. © 2022 Institute of Noise Control Engineering.

关键词： Granulation

来源：评论

学校读者我要写书评

暂无评论

Longitudinal Speed Estimation of Multi-axle Distributed Drive Vehicle Based on Federal Kalman Filter 7

Longitudinal Speed Estimation of Multi-axle Distributed Driv...

引用

7th CAA International Conference on Vehicular Control and Intelligence, CVCI 2023

作者： Wu, Dongmei Du, Kangqi Liu, Huan Liu, Xing Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan China Technical Center of Dongfeng Commercial Vehicle Wuhan China

ISBN: (纸本)9798350340488

When the wheels of distributed drive vehicle slip, the effectiveness of longitudinal speed estimation based on dynamics model is poor. Therefore, a multi-model fusion estimation method based on Federal Kalman Filter (FKF) is proposed in this paper. In order to tackle the nonlinear problem of vehicle dynamics model, an Extended Kalman Filter (EKF) is used to estimate the longitudinal speed. Additionally, considering the large mismatch between the dynamics model and the real vehicle when the wheels slip, the acceleration and linear Kalman Filter (KF) framework are used to construct a speed estimation algorithm based on kinematics. Then a FKF is designed to fuse both dynamics and kinematics methods. The slip ratio observer is introduced as the information distribution principle of two methods, and information fusion and time update are completed in FKF. After running for a period of time, the fusion result is used to reset the filter of the kinematics method to reduce the accumulated error. Finally, Trucksim/Simulink co-simulation platform is utilized for simulation analysis. Results show that the proposed speed estimation method has good effect and adaptability in the slip condition. © 2023 IEEE.

关键词： Kalman filter Multi-axle Distributed Drive Vehicle Multi-model Fusion speed estimation

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：