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Formation mechanism of fault accommodation zones under combined stress in graben basin:Implications from geomechanical modeling

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Petroleum Science 2024年第1期21卷 54-76页

作者： Qi-Qiang Ren jin-Liang gao Rong-Tao Jiang jin Wang Meng-Ping Li Jian-Wei feng Institute of Sedimentary Geology Chengdu University of TechnologyChengdu 610059SichuanChina PetroChina Research Institute of Petroleum Exploration and Development Beijing100083China Jianghan Oilfield Oil and Gas Production Capacity Construction Management Center Chongqing408000China Sinopec Chongqing Fuling Shale Gas Exploration and Development Company Chongqing408000China College of Energy Chengdu University of TechnologyChengdu 610059SichuanChina school of Geoscience China University of Petroleum(East China)Qingdao 266580ShandongChina

A fault accommodation zone is a type of structure that is defined as regulating displacement and strain between faults *** numbers of fault accommodation zones are being identified in graben basins,indicating the potential exploration target and petroleum accumulation *** study aims to analyze the formation mechanism and development of fault accommodation zones under combined stress by a numerical simulation method considering geomechanical *** three-dimensional(3-D)seismic interpretation and fractal dimension method,exampled with the Dongxin fault zone,the fault activity and fault combination pattern were conducted to quantitatively characterize the activity difference in fault accommodation *** with mechanical experiment test,a geomehcanical model was established for fault accommodation zones in a graben *** the paleostress numerical simulations and structural physical simulation experiment,the developmental characteristics and genetic mechanism of fault accommodation zones were *** by multi movements and combined stresses,three significant tectonic evolution stages of the Dongxing Fault Zone(DXFZ)were distinguished:During the E_(s)^(3)sedimentary period,the large difference in the stress,strain,and rupture distribution in various faults were significant,and this stage was the key generation period for the prototype of the DXFZ,including the FAZ between large-scale *** the E_(s)^(2)sedimentary period,the EW-trending symmetric with opposite dipping normal faults and the NE-SW trending faults with large scale were furtherly *** junction area of two secondary normal faults were prone to be ruptured,performing significant period for inheriting and developing characteristics of fault accommodation *** the Es1 sedimentary period,the high-order faults in the DXFZ exhibited the obvious fault depressions and strike-slip activity,and the fault accommodation zones were

关键词： Fault accommodation zone Graben basin Fault activity Tectonic physical simulation experiment Finite element numerical simulation Dongxin fault zone

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周期性载荷下润滑剂回填效应试验观察

机械工程学报 2024年第3期60卷 203-213页

作者：金旭阳栗心明刘耀杨萍郭峰高军斌青岛理工大学机械与汽车工程学院青岛266520

采用球-盘单点接触光干涉润滑油膜测量仪,试验观察了周期性载荷变化对润滑剂回填及润滑状态的影响。结果表明,当加载/卸载过程滚动体的运行距离大于滚道周长时,滚动体瞬时接触半径与已形成的滚道半径不一致,导致加载过程润滑状态整体优... 详细信息

采用球-盘单点接触光干涉润滑油膜测量仪,试验观察了周期性载荷变化对润滑剂回填及润滑状态的影响。结果表明,当加载/卸载过程滚动体的运行距离大于滚道周长时,滚动体瞬时接触半径与已形成的滚道半径不一致,导致加载过程润滑状态整体优于卸载过程;周期性载荷变化下润滑状态优于恒定载荷下的润滑状态,毛细力和表面张力作用下的润滑剂回填是其诱因;不同载荷下接触半径变化梯度的增加有利于润滑剂的回填,使得卸载末期润滑油膜反弹。

关键词：周期性载荷润滑剂回填润滑状态乏油光干涉

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基于EMD和FastICA的轴承故障诊断

机械设计与制造 2024年第6期400卷 48-52页

作者：高云峰张金萍沈阳化工大学机械与动力工程学院辽宁沈阳110142

针对滚动轴承振动信号之间的影响并且易受到噪声干扰的问题,提出了一种基于快速独立分类分析(FastICA)与经验模态分解(EMD)相结合的故障提取特征方法。通过经验模态分解将振动信号分解成若干个模态分量。继而,根据计算相关性系数选取有... 详细信息

针对滚动轴承振动信号之间的影响并且易受到噪声干扰的问题,提出了一种基于快速独立分类分析(FastICA)与经验模态分解(EMD)相结合的故障提取特征方法。通过经验模态分解将振动信号分解成若干个模态分量。继而,根据计算相关性系数选取有效的模态分量构建噪声通道,最后通过快速独立分类分析将源信号与噪声信号分离,进而得到独立的源信号。通过对西储大学轴承数据的仿真与实验结果表明,该方法可以有效的抑制噪声干扰,清晰的看出轴承的故障频率,实现了对轴承的故障诊断。

关键词：振动信号特征提取经验模态分解快速独立分类分析

Hardware-in-the-loop simulation for the contact dynamic process of flying objects in space

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Science China(Technological Sciences) 2016年第8期59卷 1167-1175页

作者： gao feng QI ChenKun REN AnYe ZHAOXianChao CAO Rui SUN Qiao WANG Qian HU Yan HE Jun jin zhenlin LIU RenQiang ZHANG Yong GUO WeiZhong HU ZhenYu TANG Ping NI Bo jinG Qianfeng WANG WeiJun gao Peng State Key Laboratory of mechanical System and Vibration School of Mechanical Engineering Shanghai Jiao Tong University Shanghai 200240 China Institute of Aerospace System engineering Shanghai Shanghai 201108 China school of mechanical engineering Yanshan University Qinhuangdao 066004 China

In the one-gravity environment on the ground, the simulation of the contact process of two flying objects in the zero-gravity environment of space has been a challenging issue since humans first explored space by flying objects. Hardware-in-the-loop （HIL） simulation is an important and effective method to test the usability, reliability, and safety of real docking mechanisms in space. There are four main issues for HIL simulation systems： Design of simulators capable of high frequency response, high motion precision, high velocity, and rapid acceleration; compensation for simulation distortion; design of a control model for the HIL simulation process; and experimental verification. Here, we propose a novel HIL simulator system with a 6-DOF 3-3 perpendicular parallel mechanism and a 3-DOF 3-PRS parallel mechanism; discover the principle of simulation distortion; present distortion compensation models for the force measurement system, dynamic response, and structural dynamics of the simulator; and provide a control model for the HIL simulation process. Two kinds of experiments were performed on the pas- sive-undamped elastic rod and the docking mechanisms to test their performances and to verify the effectiveness and usability of the HIL simulator. The HIL simulation system proposed in this paper is useful for developing space docking, berthing, refu- eling, repairing, upgrading, transporting, and rescuing technologies.

关键词： hardware-in-the-loop simulation hybrid simulation docking simulation contact dynamics parallel mechanisms simulation distortions distortions compensation

Surface Carbon Chemical States of Ion Implanted AISI 440C Martensitic Stainless Steel

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Journal of Iron and Steel Research International 2015年第6期22卷 513-518页

作者： Jie jin feng-bin LIU Yun-bo CHEN Ke-wei gao school of Materials Science and engineering University of Science and Technology Beijing China Academy of Machinery Science and technology College of mechanical and Electric engineering North China University of Technology

Carbon atoms segregate in the surface region for polished AISI 440C stainless steel After ion implanta tion, the surface carbon atoms exist in different forms. To elucidate their existence, surface structures and carbon chemical states o[ unimplanted, N~ implanted, Ti＋ implanted and N＋/Ti＋ co-implanted samples were analyzed by X-ray diffraction （XRD）, transmission electron microscopy （TEM） and X-ray photoelectron spectroscopy （XPS）. The results indicated that various phases form in the surface or subsurface region after ion implantation, while the surface topography of the samples remains intact. For polished unimplanted sample, besides some Fe3 C phase and C- C phase, Cr, Cs phase dominates its surface region. Little change of carbon chemical states occurs after N＋ ion im- plantation. For Ti＋ implanted sample, besides some metal oxycarbide phases, most carbon amorphous phases form in surface region. Concerning N＋/Ti＋ co-implantation, CrrCs compound as well as Fe^C phase dominates the sur face region while no C-C phase is found. In addition, compared with single ion implantation, N＋/Ti＋ co-implanta tion would increase the ion implantation depth significantly. The formed phases of the carbon atoms play an impor- tant role in affecting the surface properties of AISI 440C stainless steel.

关键词： AISI 440C steel carbon segregation ion implantation chemical state phase

Frontiers in high entropy alloys and high entropy functional materials

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Rare Metals 2024年第10期43卷 4639-4776页

作者： Wen-Tao Zhang Wen Huang Fu-Jie Yu Qi Zhao Xin-Dong Zhu Tao feng Yao Jiang Xiao-Ming Li Xue-Fei Miao He Zhu Si Lan Xue-Qian Wang Bao-Long Shen Zhe Jia feng-Qi Zhang Wei Wang Qi Liu Yang Ren Xun-Li Wang Xiao-Ya Cui Xiao-Yang Wang Ya-Nan Chen Bing-Bing Fan Meng-Ru Li Qi-Long gao Jia-Ming Guo Zeng-Bao Jiao Zhi-Min Guo Yu-Ping Zhao Qian Yu Rui Huang Ling-Kun Zhang Yi-Ping Lu Xu-Bo Li Huai-Jun Lin Yan Ma Wei-Ming Yang Zhi-Hua Shen Hai-Yan He Yong-Gang Sun Yong-Jiang Huang De-Zhuang Wang Qing-feng Liu Fei-Yang Wang Hui Liu Hong-Hui Wu Li-Qiang Wang Yang Lu Nan Wang Tian-Li Wang Wei-Bing Liao Yi-Han Wang Yuan Wu Yu-Zhen Yin Jie Pan Yi Zhang Qing Wang Jian-Yang Zhang Tao Yang Yasir Sohail jin-Yu Zhang Hua Ji Qiang Li Wei-Di Liu Zhi-Gang Chen Xiong-Jun Liu Wen Ma Liang Mao Zhen-Duo Wu school of Materials Science and engineering Nanjing University of Science and Technology Jiangsu Key Laboratory for Advanced Metallic Materials School of Materials Science and Engineering Southeast University Department of Physics City University of Hong Kong school of Materials Science and engineering Tianjin University school of Physics and Microelectronics Zhengzhou University Department of mechanical engineering Research Institute for Advanced Manufacturing The Hong Kong Polytechnic University Center of Electron Microscopy and State Key Laboratory of Silicon Materials School of Materials Science and Engineering Zhejiang University Key Laboratory of Solidification Control and Digital Preparation technology (Liaoning Province) School of Materials Science and Engineering Dalian University of Technology Institute of Advanced Wear & Corrosion Resistance and Functional Materials Jinan University school of Mechanics and Civil engineering China University of Mining and Technology school of Physical Sciences Great Bay University school of Materials Science andengineering Harbin Institute of Technology State Key Laboratory of Materials-Oriented Chemical engineering College of Chemical Engineering Nanjing Tech University Beijing Advanced Innovation Center for Materials Genome engineering Research Institute for Carbon Neutrality University of Science and Technology Beijing Department of mechanical engineering The University of Hong Kong school of Computing Macquarie University Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing State Key Laboratory of Materials Processing and Die & Mould technology School of Materials Science and Engineering Huazhong University of Science and Technology Institute of materials Shanghai University Department of Materials Science and engineering C

Owing to their exceptional properties, high-entropy alloys(HEAs) and high-entropy materials have emerged as promising research areas and shown diverse applications. Here,the recent advances in the field are comprehensively reviewed,organized into five sections. The first section introduces the background of HEAs, covering their definition, significance,application prospects, basic properties, design principles, and microstructure. The subsequent section focuses on cutting-edge high-entropy structural materials, highlighting developments such as nanostructured alloys, grain boundary engineering,eutectic systems, cryogenic alloys, thin films, micro-nano-lattice structures, additive manufacturing, high entropy metallic glasses, nano-precipitate strengthened alloys, composition modulation, alloy fibers, and refractory systems. In the following section, the emphasis shifts to functional materials, exploring HEAs as catalysts, magneto-caloric materials, corrosion-resistant alloys, radiation-resistant alloys, hydrogen storage systems, and materials for biomedicine. Additionally, the review encompasses functional high-entropy materials outside the realm of alloys, including thermoelectric, quantum dots, nanooxide catalysts, energy storage materials, negative thermal expansion ceramics,and high-entropy wave absorption materials. The paper concludes with an outlook, discussing future directions and potential growth areas in the field. Through this comprehensive review,researchers, engineers, and scientists may gain valuable insights into the recent progress and opportunities for further exploration in the exciting domains of high-entropy alloys and functional materials.

关键词： Cutting-edge structural materials Cutting-edgefunctional materials High entropy alloys

静电纺丝技术制备ETPE基多元含能复合纤维

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火炸药学报 2024年第4期47卷 334-343页

作者：王慧金晓明章支梦郑天宇魏娇王宇航高浩峰姜炜张光普南京理工大学化学与化工学院江苏南京210094 西安北方惠安化学工业有限公司陕西西安710302 北京联合大学北京市智能机械创新设计服务工程技术研究中心北京100027

为了探索ETPE基多元含能复合纤维的静电纺丝制备工艺,以聚叠氮缩水甘油醚基热塑性弹性体(GAP-ETPE)为聚合物黏合剂,CL-20、纳米铝粉(n-Al)作为高能组分,采用静电纺丝技术制备了GAP-ETPE基超细含能复合纤维,并对溶剂、前驱液质量分数、... 详细信息

为了探索ETPE基多元含能复合纤维的静电纺丝制备工艺,以聚叠氮缩水甘油醚基热塑性弹性体(GAP-ETPE)为聚合物黏合剂,CL-20、纳米铝粉(n-Al)作为高能组分,采用静电纺丝技术制备了GAP-ETPE基超细含能复合纤维,并对溶剂、前驱液质量分数、固相组分配比等关键工艺参数进行了优化;采用扫描电子显微镜(SEM)和透射电子显微镜(TEM)对产物形貌进行了表征,采用DSC法分析了复合纤维的热分解性能;测试了复合纤维的机械感度。结果表明,GAP-ETPE基含能复合纤维静电纺丝制备最佳溶剂为丙酮,产物成丝均匀、表面光滑;在GAP-ETPE/CL-20质量比为3∶7、前驱液质量分数为50%时,二元超细含能复合纤维(CL_(x)-ETPE_(y)-Z)的成丝效果最优,平均直径约为2480nm;在铝粉质量分数为10%、前驱液质量分数为50%时,三元超细含能复合纤维(CL-Al_(m)-ETPE-Z)的成丝效果最优,平均直径约为930nm;相比于CL-20,CL_(7)-ETPE_(3)-50含能复合纤维热分解峰值温度提前了29℃,加入n-Al之后热分解峰值温度提前了32℃,且优于物理共混物(PM);与CL-20的感度(P=100%、H_(50)=17cm)相比,GAP-ETPE/CL-20和GAP-ETPE/CL-20/Al含能复合纤维的摩擦感度(32%和48%)和撞击感度(29cm和43cm)均大幅降低,且低于同配方的物理共混物。

关键词：材料科学含能复合纤维制备工艺静电纺丝 GAP-ETPE CL-20 n-Al

Enhanced soft magnetic properties of iron powders through coating MnZn ferrite by one-step sol–gel synthesis

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Chinese Physics B 2019年第5期28卷 300-304页

作者： Dong Liu Shanmin gao Rencheng jin feng Wang Xiaoxiao Chu Taiping gao Yubao Wang school of Chemistry and Materials Science Ludong University

The MnZn ferrite coating formed on the surface of iron-based soft magnetic powders via facile and modified sol–gel process has been fabricated to obtain better magnetic performance due to its higher permeability compared with traditional nonmagnetic insulation coatings. The influence of the MnZn ferrite contents on the magnetic performance of the soft magnetic composites(SMCs) has been studied. As the MnZn insulation content increases, the core loss first experiences a decreasing trend that is followed by progressive increase, while the permeability follows an increasing trend and subsequently degrades. The optimized magnetic performance is achieved with 2.0 wt% MnZn ferrite, which results from the decrement of inter-particle eddy current losses based on loss separation. A uniform and compact coating layer composed of MnZn ferrite and oxides with an average thickness of 0.38 ± 0.08 μm is obtained by utilizing ion beam technology, and the interface between the powders and the coating shows satisfied adhesiveness compared with the sample directly prepared by mechanical mixing. The evolution of the coating layers during the calcination process has been presented based on careful analysis of the composition and microstructure.

关键词： soft magnetic powders magnetic performance coating layer ion beam technology

Low-temperature mechanical and magnetic properties of the reduced activation martensitic steel

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Frontiers of Materials Science 2015年第3期9卷 264-271页

作者： Hui-Li DING Tao ZHANG Rui gao Xian-Pincl WANG Qian-feng FANG Chang-Song LIU jin-Ping SUO Key Laboratory of Materials Physics Institute of Solid State Physics Chinese Academy of Sciences Hefei 230031 China school of Materials Science and engineering Huazhong University of Science and Technology Wuhan 430074 China

mechanical and magnetic properties as well as their relationship in the reduced activation martensitic （RAM） steel were investigated in the temperature range from -90℃ to 20℃. Charpy impact tests show that the ductile-to-brittle transition temperature （DBTT） of the RAM steel is about -60℃. Low-temperature tensile tests show that the yield strength, ultimate tensile strength and total elongation values increase as temperature decreases, indicating that the strength and plasticity below the DBTT are higher than those above the DBTT. The coercive field （Hc） in the scale of logarithm decreases linearly with the increasing temperature and the absolute value of the slope of InHc versus temperature above the DBTT is obviously larger than that below the DBTT, also confirmed in the T91 steel. The results indicate that the non-destructive magnetic measurement is a promising candidate method for the DBTT detection of ferromagnetic steels.

关键词： reduced activation martensitic (RAM) steel ductile-to-brittle transition temperature (DBTT) mechanical property magnetic property non-destructive detection