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Dynamic Interaction Analysis of Coupled Axial-Torsional-Lateral Mechanical Vibrations in Rotary Drilling Systems

Structural Durability & Health Monitoring 2025年第1期19卷 77-103页

作者： Sabrina Meddah Sid Ahmed Tadjer Abdelhakim Idir Kong Fah Tee Mohamed Zinelabidine Doghmane Madjid Kidouche Applied Automation Laboratory Faculty of Hydrocarbons and ChemistryUniversity of BoumerdesBoumerdes35000Algeria Institute of Electrical and Electronic Engineering(IGEE) University of BoumerdesBoumerdes35000Algeria Laboratory of the Electrification of Industrial Enterprises University of BoumerdesBoumerdes35000Algeria Electrical Engineering Department Mohamed Boudiaf University of M’silaM’sila28000Algeria Department of Civil and Environmental Engineering King Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia interdisciplinary research center for construction and building materials King Fahd University of Petroleum&Minerals(KFUPM)Dhahran31261Saudi Arabia

Maintaining the integrity and longevity of structures is essential in many industries,such as aerospace,nuclear,and *** achieve the cost-effectiveness of large-scale systems in petroleum drilling,a strong emphasis on structural durability and monitoring is *** study focuses on the mechanical vibrations that occur in rotary drilling systems,which have a substantial impact on the structural integrity of drilling *** study speciﬁcally investigates axial,torsional,and lateral vibrations,which might lead to negative consequences such as bit-bounce,chaotic whirling,and high-frequency *** events not only hinder the efﬁciency of drilling but also lead to exhaustion and harm to the system’s components since they are difﬁcult to be detected and controlled in real *** study investigates the dynamic interactions of these vibrations,speciﬁcally in their high-frequency modes,usingﬁeld data obtained from measurement while ***ﬁndings have demonstrated the effect of strong coupling between the high-frequency modes of these vibrations on drilling sys-tem *** obtained results highlight the importance of considering the interconnected impacts of these vibrations when designing and implementing robust control ***,integrating these compo-nents can increase the durability of drill bits and drill strings,as well as improve the ability to monitor and detect ***,by exploiting theseﬁndings,the assessment of structural resilience in rotary drilling systems can be ***,the study demonstrates the capacity of structural health monitoring to improve the quality,dependability,and efﬁciency of rotary drilling systems in the petroleum industry.

关键词： Rotary drilling systems mechanical vibrations structural durability dynamic interaction analysis ﬁeld data analysis

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Effect of Matrix Modification on Durability of Cementitious Composites in an Acid Rain Environment

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Journal of Wuhan University of Technology(materials Science) 2014年第3期29卷 498-503页

作者：贺奎 YANG Hui LU Zhenbao JIA Fangfang WANG Erpo 董全霄 Department of materials Science and Engineering Zhejiang University Beijing Engineering research center of Architectural Functional Macromolecular materials Beijing Building Construction Research Institute Co. Ltd.

The durability of silane-modified mortar, a cementitious composite, in acid rain environment was investigated given its extensive usage as a structural material. The results indicated that the addition of silane decreased the compressive strength of the cementitious composite. Wetting angle was increased by incorporating silane into the matrix. Decrease in both water absorption ability and coefficient of capillary suction confirmed hydrophobicity as induced by silane addition. Results of mechanical testing, scanning electron microscopy and X-ray diffraction showed that the sulfuric acid resistance of mortar was enhanced by silane. Based on these results, it is revealed that silane addition inhibits the diffusion of water, and consequently, sulfate ion diffusion rate decreases, thereby resulting in reduction in the rate of corrosion of cementitious composites by sulfuric acid.

关键词： silane cement wetting angle acid rain

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Living concrete with self-healing function on cracks attributed to inclusion of microorganisms: Theory, technology and engineering applications——A review

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Science China(Technological Sciences) 2021年第10期64卷 2067-2083页

作者： QIAN ChunXiang ZHENG TianWen RUI YaFeng School of materials Science and Engineering Southeast UniversityNanjing 211189China research center of Green building&construction materials Southeast UniversityNanjing 211189China Key Lab of Microbial Bio-mineralization Technology China Construction Materials IndustryNanjing 211189China Jiangsu Key Laboratory for construction materials Southeast UniversityNanjing 211189China

Concrete is the most widely used composite material in civil *** induced calcium carbonate precipitation(MICP)is a green and environmental friendly technology,which has received extensive attention in repair of concrete *** paper introduces the research progress in Southeast University research in past 16 *** the early stage,MICP technology of urea hydrolyzed by Bacillus pasteurii was mainly investigated to repair the surface cracks and to fill large-size cracks with ***,aiming at the hidden cracks that were difficult for human intervention,a new mineralization route of Bacillus mucilaginosus was proposed,which could repair faster than Bacillus alcalophilus,and the problem of ammonia emission in the repair process of Bacillus pasteurii was also *** addition,in order to improve the protection of bacteria and the self-healing efficiency of the later age cracks,the methods of fiber immobilization,carrier uniformly immobilization and core-shell structural immobilization had been compared and *** results showed that core-shell structural immobilization had good protection ability and strong ***’s more,the paper also summarized the characteristics of spore germination,cell activity,nucleation and biological calcium carbonate in crack zone,and introduced the application experience of microbial self-healing concrete in water conservancy projects and subway stations.

关键词： living concrete self-healing crack microorganisms engineering application

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Molecular Simulation of Cement-Based materials and Their Properties

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Engineering 2022年第8期8卷 165-178页

作者： Ashraf A.Bahraq Mohammed A.Al-Osta Omar S.Baghabra Al-Amoudi I.B.Obot Mohammed Maslehuddin Habib-ur-Rehman Ahmed Tawfik A.Saleh Department of Civil and Environmental Engineering King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia interdisciplinary research center for construction and building materials King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia interdisciplinary research center for Advanced materials King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia Department of Chemistry King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia

Hydrated cement is one of the complex composite systems due to the presence of multi-scale phases with varying *** silicate hydrate,which is the principal binder phase in the hydrated cement,is responsible for the stiffness,strength,and durability of Portland cement *** understand the mechanical and durability behavior of concrete,it is important to investigate the interactions of hydrated cement phases with other materials at the *** this regard,the molecular simulation of cement-based materials is an effective approach to study the properties and interactions of the cement system at the fundamental ***,many studies have been published regarding atomistic simulations to investigate the cement phases to define/explain the microscopic physical and chemical properties,thereby improving the macroscopic performance of hardened *** research in molecular simulation of cementitious systems involves researchers with multidisciplinary backgrounds,mainly in two areas:(1)cement chemistry,where the hydration reactions govern most of the chemical and physical properties at the atomic scale;and(2)computational materials science and engineering,where the bottom-up approach is *** latter approach is still in its infancy,and as such,a study of the prevailing knowledge is useful,namely through an exhaustive literature *** state-of-theart report provides a comprehensive survey on studies that were conducted in this area and cites the important findings.

关键词： Atomistic simulation Molecular dynamics Cement phases Hydration products Nanoengineering

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Gas separation using porous cement membrane

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Journal of Environmental Sciences 2014年第1期26卷 140-146页

作者： Weiqi Zhang Maria Gaggl Gregor J.G.Gluth Frank Behrendt Berlin Institute of Technology Department of Energy Engineering Chair EVUR Chinese research Academy of Environmental Sciences Berlin Institute of Technology Chair of Building Materials BAM Federal Institute for materials research and Testing Division 7.4 Technology of Construction Materials

Gas separation is a key issue in various industrial fields. Hydrogen has the potential for application in clean fuel technologies. Therefore, the separation and purification of hydrogen is an important research subject. CO2 capture and storage have important roles in ＂green chemistry＂. As an effective clean technology, gas separation using inorganic membranes has attracted much attention in the last several decades. Membrane processes have many applications in the field of gas separation. Cement is one type of inorganic material, with the advantages of a lower cost and a longer lifespan. An experimental setup has been created and improved to measure twenty different cement membranes. The purpose of this work was to investigate the influence of gas molecule properties on the material transport and to explore the influence of operating conditions and membrane composition on separation efficiency. The influences of the above parameters are determined, the best conditions and membrane type are found, it is shown that cementitious material has the ability to separate gas mixtures, and the gas transport mechanism is studied.

关键词： gas separation porous membrane clean fuel cement membrane inorganic membranes

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construction of multiple heterogeneous interfaces and oxygen evolution reaction of hollow CoFe bimetallic phosphides derived from MOF template

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Progress in Natural Science:materials International 2024年第5期34卷 913-920页

作者： Haiqi Zhang Qingqing Zhang Xiaojun Zeng National Engineering research center for Domestic & building Ceramics School of Materials Science and Engineering Jingdezhen Ceramic University

Rational design of electrocatalysts is the key to achieving sustainable oxygen evolution reaction(OER). The conjugation of metal organic frameworks(MOFs) with different multicomponent materials to precisely construct heterostructures is fascinating but remains a significant challenge due to different interface energies and nucleation kinetics. In this work, hollow multilayer heterogeneous catalyst(CoFeP/CoFeP/NP-C) was constructed using a rigid template sacrifice approach and an ion exchange strategy. By cleverly combining iron-based MOFs(MIL-88A, sacrifice template) nanorods, layered dihydroxides(LDH) nanosheets, and Prussian blue(PB) nancubes to form rich heterojunction and bimetallic phosphide catalysts, and by tuning the reaction kinetics and electron transfer capacities to enrich the active sites, ultimately promoting the intrinsic activity of the catalyst towards OER. Simultaneously, the co-doping of nitrogen and phosphorus in the heterostructure helped to adjust the electronic structure of the heterogeneous catalyst and the conductivity of the matrix, promoting the adsorption and desorption of OER intermediates on the catalyst surface. This work provides a new strategy for designing efficient and stable bimetallic phosphide electrocatalysts.

关键词： Bimetallic phosphides Heterogeneous interfaces MOF OER Sacrifice template

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UV Photodegradation of Polypropylene Thick Bars Containing Rutile-type TiO_2 Nanorods

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Chinese Journal of Polymer Science 2014年第7期32卷 834-843页

作者： Lin Qi Yan-fen Ding Quan-xiao Dong Bin Wen Peng Liu Feng Wang Shi-min Zhang 阳明书 Beijing National Laboratory for Molecular Science Key Laboratory of Engineering PlasticsInstitute of ChemistryChinese Academy of Sciences Beijing Engineering research center of Architectural Functional Macromolecular materials Beijing Building Construction Research InstituteCo.Ltd.

Surface modified rutile-type titanium dioxide （CST） nanorods were used as a UV absorber in polypropylene （PP） thick bars in combination with the hindered amine light stabilizer （HALS） Chimassorb 944 （C944）. For all of the tested samples, the photodegradation was mainly limited in the region near the exposed surface, as proved by the carbonyl index and molecular weight. Compared with the typical HALS photostabilization system containing organic hindered phenol UV absorber Tinuvin~ 328 （T328）, the thickness of photodegradation region for PP/C944/CST was only a quarter to that for PP/C944 and PP/C944/T328, while the rates of reduction in molecular weight and increase in carbonyl index were much lower. Optical microscopic observation showed that the evolution of surface micro-cracks in PP/C944/CST was quite different from that in the other samples, while scanning electronic micrographs revealed that the depth of the micro-cracks in PP/C944/CST was much shorter than that in the others. It is therefore concluded that the protection of CST on PP thick bars is mainly attributed to the outstanding UV-shielding and cracks-blocking abilities.

关键词： Polypropylene Titanium dioxide nanorods Photodegradation Molecular weight Surface micro-cracks.

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Red Cement-based Decorative Mortar Prepared with Dry Electroplating Sludge Containing Pb as Red Pigment

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Journal of Wuhan University of Technology(materials Science) 2014年第2期29卷 291-297页

作者：李好新杨晓杰 SUO Zhi XIA Yibing HE Daihua Key Laboratory of Advanced Civil Engineering materials Ministry of Education Tongji University Beijing Urban Transportation Infrastructure Engineering Technology research center Beijing University of Civil Engineering and Architecture Beijing Engineering research center of Architecture Functional Macromolecular materials Beijing Building Construction Research Institute Co.Ltd School of materials Science and Engineering University of Shanghai for Science and Technology

Red cement-based decorative mortars were prepared with different content electroplating sludge containing Pb （EPSP）, and their colors, water absorption, strengths, hydration characteristics and heavy metal leachabilities were investigated. The experimental results show that EPSP can adjust the mortar color well as the red pigments exclusively used in the decorative mortarS. EPSP will result in the increase of water absorption, but the mortar produced with 5% EPSP still has the very satisfactory water absorption. The mortars with EPSP are provided with nearly the same compressive, flexural and tensile bond strengths as those of the control. EPSP has no notable influence on the paste hydration. But it can densify the mortar microstructures. It is also evident that heavy metal concentrations in leachates of the mortars with EPSP are far lower than the recommended in the GB5085.3-2007.

关键词： eleclroplating sludge mortar color strength leachability

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Practical elasto-plastic damage model for dynamic loading and nonlinear analysis of Koyna concrete dam

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Journal of Central South University 2013年第9期20卷 2586-2592页

作者：齐虎李云贵吕西林 Institute of building Structures China Academy of Building Research China State construction Engineering Co. Ltd.

The elasto-plastic damage model for concrete under static loading,previously proposed,was extended to account for the concrete strain-rate through viscous regularization of the evolution of the damage *** order to describe the energy dissipation by the motion of the structure under dynamic loading,a damping model which only includes stiffness damp stress was proposed and incorporated into the proposed rate dependent model to consider the energy dissipation at the material *** proposed model was developed in ABAQUS via UMAT and was verified by the simulations of concrete specimens under both tension and compression uniaxial loading at different strain *** nonlinear analysis of Koyna concrete dam under earthquake motions indicates that adding stiffness damp into the constitutive model can significantly enhance the calculation efficiency of the dynamic implicit analysis for greatly improving the numerical stability of the *** strain rate effect in the model can affect the displacement reflection of this structure for slightly enhancing the displacement of the top,and can improve the calculation efficiency for greatly reducing the cost time.

关键词： stiffness damp strain-rate sensitivity concrete constitutive model

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Effects of seeding nucleation agent on geopolymerization process of fly-ash geopolymer

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Frontiers of Structural and Civil Engineering 2018年第1期12卷 16-25页

作者： Lapyote PRASITTISOPIN Issara SEREEWATTHANAWUT Siam Cement Group Building and Construction Materials Saraburi 18260 Thailand Faculty of Engineering Bangkokthonburi University Bangkok 10170 Thailand

Geopolymer, an inorganic aluminosilicate material activated by alkaline medium solution, can perform as an inorganic adhesive. The geopolymer technology has a viability to substitute traditional concrete made of portland cement （PC） because replacing PC with fly ash leads to reduced carbon dioxide emissions from cement productions and reduced materials cost. Although fly ash geopolymer stimulates sustainability, it is slow geopolymerization reaction poses a challenge for construction technology in term of practicality. The development of increasing geopolymerization reaction rate of the geopolymer is needed. The purpose of this study is to evaluate seeding nucleation agents （NA） of fly ash geopolymer that can accelerate polymerization reactions such that the geopolymer can be widely used in the construction industry. Results from the present study indicate that the use of NA （i.e., Ca（OH）2） can be potentially used to increase geopolymerization reaction rate and improve performance characteristics of the fly ash geopolymer product.

关键词： fly ash geopolymer nucleation agent portland cement replacement

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