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Multi-physics coupling field finite element analysis on giant magnetostrictive materials smart component

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第5期10卷 653-660页

作者： Zhang-rong ZHAO Yiojie WU Xin-jian GU Lei ZHANG ji-feng yang State Key Laboratory of Fluid Power Transmission and Control Modern Manufacture Engineering Institute Zhejiang University Hangzhou 310027 China Department of Mechanical & Electronic North China Institute of Science and Technology Beijing 101601 China

This study presents a new method to solve the difficult problem of precise machining a non-cylinder pinhole of a piston using embedded giant magnetostrictive material (GMM) in the component. We propose the finite element model of GMM smart component in electric, magnetic, and mechanical fields by step computation to optimize the design of GMM smart com-ponent. The proposed model is implemented by using COMSOL multi-physics V3.2a. The effects of the smart component on the deformation and the system resonance frequencies are studied. The results calculated by the model are in excellent agreement (relative errors are below 10%) with the experimental values.

关键词： Smart component Giant magnetostrictive Finite element method (FEM) modeling Non-cylinder piston pinhole Multi-physics coupling field

Magneto‑Dielectric Synergy and Multiscale Hierarchical Structure Design Enable Flexible Multipurpose Microwave Absorption and Infrared Stealth Compatibility

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Nano-Micro Letters 2025年第2期17卷 401-416页

作者： Chen Li Leilei Liang Baoshan Zhang Yi yang Guangbin ji School of Electronic Science and Engineering Nanjing UniversityNanjing 210093People’s Republic of China College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China

Developing advanced stealth devices to cope with radar-infrared(IR)fusion detection and diverse application scenarios is increasingly demanded,which faces significant challenges due to conflicting microwave and IR cloaking mechanisms and functional integration ***,we propose a multiscale hierarchical structure design,integrating wrinkled MXene IR shielding layer and flexible Fe_(3)O_(4)@C/PDMS microwave absorption *** top wrinkled MXene layer induces the intensive diffuse reflection effect,shielding IR radiation signals while allowing microwave to pass ***,the permeable microwaves are assimilated into the bottom Fe_(3)O_(4)@C/PDMS layer via strong magneto-electric *** theoretical and experimental optimization,the assembled stealth devices realize a near-perfect stealth capability in both X-band(8–12 GHz)and long-wave infrared(8–14μm)wavelength ***,it delivers a radar cross-section reduction of−20 dB m^(2),a large apparent temperature modulation range(ΔT=70℃),and a low average IR emissivity of ***,the optimal device demonstrates exceptional curved surface conformability,self-cleaning capability(contact angle≈129°),and abrasion resistance(recovery time≈5 s).This design strategy promotes the development of multispectral stealth technology and reinforces its applicability and durability in complex and hostile environments.

关键词： Microwave absorption Radar-infrared compatible stealth Wrinkled MXene Magneto-dielectric synergy Multifunction

Effect of Progressive Substitution of Cement and Lime by Powdered Shells Used as a Curing Agent for Dredged Soil in a Port Area

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 88-102页

作者： SUN yang WANG Faxin SU Yaying LI Yiwei HE feng College of Harbour Coastal and Offshore EngineeringHohai UniversityNanjing 210098China Huai'an Research Institute Hohai UniversityHuai'an 223025China jiangsu Fangyang Industrial Investment Corp.Ltd. Lianyungang 210098China

This study aimed to address the challenges of solid waste utilization,cost reduction,and carbon reduction in the treatment of deep-dredged soil at Xuwei Port in Lianyungang city of *** research in this area was ***,a curing agent made from powdered shells was used to solidify the dredged soil in *** employed laboratory orthogonal tests to investigate the physical and mechanical properties of the powdered shell-based curing *** was collected by conducting experiments to assess the role of powdered shells in the curing process and to determine the optimal ratios of powdered shells to solidified soil for different *** development of strength in solidified soil was studied in both seawater and pure water *** study revealed that the strength of the solidified soil was influenced by the substitution rate of powdered shells and their interaction with *** cement content had a positive effect on *** high-strength solidified soil,the recommended ratio of wet soil:cement:lime:powdered shells were 100:16:4:4,while for low-strength solidified soil,the recommended ratio was 100:5.4:2.4:***,under appropriate conditions,improved short-term strength by promoting the formation of expansive ettringite minerals that contributed to cementation and *** findings suggest that the combination of cement and powdered shells is synergistic,positively affecting the strength of solidified *** recommended ratios provide practical guidance for achieving desired strength levels while considering factors such as cost and carbon *** role of seawater in enhancing short-term strength through crystal formation is noteworthy and can be advantageous for certain *** conclusion,this research demonstrates the potential of using a powdered shell-based curing agent for solidifying dredged soil in an environmentally friendly and cost-effective *** recommended ratios for different str

关键词： carbon reduction and solidification dredged soil abandoned shells orthogonal test chemical additives(lime and cement) unconfined compressive strength(UCS)

A Rapid and Visual Detection Method for Phoxim Based on Host-Guest Chemistry

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A Rapid and Visual Detection Method for Phoxim Based on Host...

Mobile Ubiquitous Network Environment

中国化学会第十三届全国分析化学年会

作者： Guan-Xing yang ji-yang feng Yu-Xiao Mei Xian-Liang Cao Hai-Bing Li Key Laboratory of Pesticide & Chemical Biology (CCNU) Ministry of Education

Pesticides are widely used in the crops protection. Meanwhile, it will also cause a lot of potential harms, such as environmental pollution, food contamination, etc. Meanwhile, organophosphorus pesticide due to its strong toxicity has been listed as the banned pesticide. At present, the detection method of Organophosphorus pesticide residue is mainly about two categories, biochemical assay and chromatographic method. For those test methods, it has a high sensitivity but it was complicated to operate and poor selectivity. So it is necessary to develop an on-site method to detect organophosphorus pesticides. The wettability detection method based on Si surface is a rapid, visual, easy and on-site method for detecting organophosphorus pesticides.

关键词： visual detection CA host-guest chemistry

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ZTE Communications 2007年第1期5卷 54-59页

作者： Zhang Ping, ji yang, feng Zhiyong(Research Center for Wireless New Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China)

The Mobile Ubiquitous Service Environment (MUSE), established through the coordination and integration of mobile telecommunications and ubiquitous network in the pursuit of Always Best Experience (ABE), represents the major development trend for the next generation mobile wireless network. Research on MUSE will involve the integration of computing model system, service platform system, operating system and terminal structure system, all of which involve exploration and innovation of new networking structure, its control and management as well as way of measuring. The change in network resources triggers the change in network computing models. To make readers have a basic understanding of mobile ubiquitous network environment, this lecture will introduce MUSE in two sections. The first section describes the background of MUSE and its future development prospect. The second section focuses on the design principles and key technologies in MUSE model, which make services realized, as well as the networking structure of MUSE model, and the key technologies and design principles of networking.

关键词： work Mobile Ubiquitous Network Environment WCDMA NSE GPP

Mobile Ubiquitous Service Environment (4)

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ZTE Communications 2007年第4期5卷 55-59页

作者： Zhang Ping,ji yang,feng Zhiyong(Wireless Technology Innovation institute,Beijing University of Posts and Telecommunications,Beijing 100876,China)

The Mobile Ubiquitous Service Environment(MUSE),established through the coordination and integration of mobile telecommunications and ubiquitous network,in the pursuit of Always Best Experience(ABE),represents the major development trend for the next generation mobile wireless *** on MUSE will involve the integration of the computing model system,service platform system,operating system and terminal structure system;and each involves exploration and innovation of a new networking structure,its control and management as well as its *** change in network resources triggers the change in network computing *** let readers have a basic understanding of MUSE,this lecture introduces MUSE in four *** section focuses on the MUSE network architecture and its key technologies.

关键词： Mobile Ubiquitous Service Environment ABE

Interaction of major facilitator superfamily domain containing 2A with the blood-brain barrier

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Neural Regeneration Research 2025年第8期20卷 2133-2152页

作者： Yilun Ma Taiwei Dong Fei Luan Juanjuan yang feng Miao Peifeng Wei College of Pharmacy and First Clinical Medical College Shaanxi University of Chinese MedicineXianyangShaanxi ProvinceChina National Drug Clinical Trial Agency The Second Affiliated Hospital of Shaanxi University of Chinese Medicine/Xixian New District Central HospitalXi′anShaanxi ProvinceChina

The functional and structural integrity of the blood-brain barrier is crucial in maintaining homeostasis in the brain microenvironment;however,the molecular mechanisms underlying the formation and function of the blood-brain barrier remain poorly *** major facilitator superfamily domain containing 2A has been identified as a key regulator of blood-brain barrier *** plays a critical role in promoting and maintaining the formation and functional stability of the blood-brain barrier,in addition to the transport of lipids,such as docosahexaenoic acid,across the blood-brain ***,an increasing number of studies have suggested that major facilitator superfamily domain containing 2A is involved in the molecular mechanisms of blood-brain barrier dysfunction in a variety of neurological diseases;however,little is known regarding the mechanisms by which major facilitator superfamily domain containing 2A affects the blood-brain *** paper provides a comprehensive and systematic review of the close relationship between major facilitator superfamily domain containing 2A proteins and the blood-brain barrier,including their basic structures and functions,cross-linking between major facilitator superfamily domain containing 2A and the blood-brain barrier,and the in-depth studies on lipid transport and the regulation of blood-brain barrier *** comprehensive systematic review contributes to an in-depth understanding of the important role of major facilitator superfamily domain containing 2A proteins in maintaining the structure and function of the blood-brain barrier and the research progress to *** will not only help to elucidate the pathogenesis of neurological diseases,improve the accuracy of laboratory diagnosis,and optimize clinical treatment strategies,but it may also play an important role in prognostic *** addition,the effects of major facilitator superfamily domain containing 2A on blood-brain barrier lea

关键词： blood-brain barrier(BBB) caveolin-1 central nervous system docosahexaenoic acid endothelial cells lysophosphatidylcholine major facilitator superfamily domain containing 2A(MFSD2A) transcytosis

Manufacture the conducting polymer with light

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Science China Chemistry 2025年第01期 8-9页

作者： yang Li Tianyu Li Yan ji Baoguang Liu College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology) Nanjing University of Posts & Telecommunications

Poly(3,4-ethylenedioxythiophene) (PEDOT), heralded as the “king” of conducting polymers, is esteemed in bioelectronics for its mixed electronic and ionic conductivity, mechanical properties compatible with biological tissues, tunable healing ability and stability in diverse environments [1]. Based on additive manufacturing of three-dimensional structures,PEDOT realizes the implementation in the efficient production of flexible bioelectronics, the construction of intricate electrode-neural implantations, and the development of smart brain-computer-interfaces [2].

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绳系并联支撑机构的绳迟滞效应及影响实验研究

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工程力学 2019年第11期36卷 212-221页

作者：冀洋锋林麒彭苗娇柳汀吴惠松厦门大学航空航天学院厦门361005 集美大学诚毅学院厦门361021

绳系并联机构因具有结构简单、工作空间大、惯性小等优势,得到了广泛的应用。该文针对支撑绳索中普遍存在的迟滞效应进行了实验研究。首先,分析了某绳系并联机器人(Wire-driven Parallel Robot, WDPR)样机中的绳迟滞曲线的数学模型,并... 详细信息

绳系并联机构因具有结构简单、工作空间大、惯性小等优势,得到了广泛的应用。该文针对支撑绳索中普遍存在的迟滞效应进行了实验研究。首先,分析了某绳系并联机器人(Wire-driven Parallel Robot, WDPR)样机中的绳迟滞曲线的数学模型,并利用实验数据识别出了模型中的相关参数;其次,通过不同条件下的绳索伸-缩实验,探讨了绳拉力迟滞效应的影响因素;接着,分析了迟滞效应对飞行器模型位姿和气动载荷参数解算的影响情况。最后,以某风洞试验模型支撑绳系并联机器人样机中支撑飞机模型的牵引绳的迟滞现象为例,对绳迟滞效应的影响情况进行了分析。研究结果表明:绳迟滞效应对模型位姿和利用绳拉力解算风洞试验的模型气动载荷都有一定的影响;绳索的材质与迟滞现象关系密切;预紧力对迟滞效应的影响程度具有决定性的作用,当绳预紧力增大到一定程度时,迟滞效应的影响是可以忽略的。

关键词：绳系并联机器人绳迟滞效应迟滞效应实验绳索伸-缩实验迟滞效应影响