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Mechanical engineering
Final test 2nd semester 2019-2020 course: English for mechanical engineering - ĐH Sư phạm Kỹ thuậtFinal test 2nd semester 2019-2020 course: English for mechanical engineering giúp các bạn sinh viên có thêm tài liệu để củng cố các kiến thức, ôn tập kiểm tra, thi cuối kỳ. Đây là tài liệu bổ ích để các em ôn luyện và kiểm tra kiến thức tốt, chuẩn bị cho kì thi học kì. Mời các em và các quý thầy cô giáo bộ môn tham khảo.
Summary Of Doctoral Thesis In Mechanical Engineering And Engineering Mechanics: Study on reduction of torsional vibration of shaft using dynamic vibration absorberThe dissertation aims to study to reduce torsional vibration for the shaft The machine is equipped with DVA (dynamic vibration absorber) oscillator, mass disk type - spring - viscous. To know more details of the content please refer to the thesis summary.
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Sumary of Phd thesis Mechanical engineering: A study on the engine performance and emission characteristics of gasoline engine using dimethylfuran-based blendsTheoretical aim: An overview study of the production process, physicochemical properties and applicability of 2.5-dimethylfuran on on internal combustion engines (especially SI engines) to determine the reasearch gap, scope and plan; the theoretical basis study of combustion and emission of SI engines using DMF as fuel to examine the technical parameters and emissions of the engine when using DMF-gasoline blends on a gasoline engine.
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Summary of Mechanical engineering Doctoral thesis: Research on traction-grapping capacity and stability of tractor with combination of disc plow working on steep terrainThe influence of some structural factors and utilisation conditions on traction-gripping capacity and stability is determinated to improve working effeficiency of the rubber-tired agrimotor system assembled with a twogang disc plow working on steep terrain.
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Summary of doctoral thesis in mechanical engineering and engineering mechanics: Dynamic of FGM beams with porosities in thermal environment under moving loadThis thesis aims to develop finite element models for studying vibration of FGM porous beams in thermal environment under moving loads. Both analytical method and finite element analysis are employed in the thesis. The analytical method is used to derive equations of motion for the beam, and the finite element method is then employed to solve the governing equations and to determine the dynamic characteristics of the beams.
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Research to optimize product shape using autodesk inventor pro softwareThis article deals with optimizing the shape of a bearing plate commonly found in mechanical engineering. The verification of the suitability of the newly optimized model will be done on the basis of a static simulation of the shape using Inventor Pro 2023 software.
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Theme in the English mechanical engineering discourse: A systemic functional descriptionThis article examines the use of theme in English mechanical engineering (ME) discourse from systemic functional linguistics (SFL) perspective developed by Halliday and other systemists.
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Summary of doctoral thesis in Mechanical engineering and Engineering mechanics: An approach to approximate and fem-model the conductivity and elasticity of multicomponent materialEquivalent inclusion approach is then developed to account for possible diversions, such as non-idealistic geometric forms of the inhomogeneities, imperfect matrix-inclusion contacts, filler dispersions, and when the particular values of the fillers’ properties are unspecified, using available numerical or experimental reference conductivity data for particular composites.
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Summary of Mechanical engineering and Engineering mechanics doctoral dissertation: Research on non-linear random vibration by the global – local mean square error criterionPropose the global – local mean square error criterion (GLOMSEC) for Gaussian equivalent linearization method (GEL) for randomly excited MDOF nonlinear system subjected to white noise or color noise excitation. The mean square of response solution will be concentrated to evaluate the accuracy of the proposed criterion by comparison with exact solution or other accepted solutions.
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Abstract of doctor thesis in Mechanical engineering and Engineering mechanics: Crack detection in bars, beams by measurement of frequency response functionThe aims of this study are to develop and apply the method of using frequency response functions to diagnose cracks in elastic bar and beams structure. The contents of the study includes: building models of cracked elastic bar and 3 beams structure; studying the changes of oscillation parameters, mainly frequency response functions due to cracks.
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Hàn (welding) welding) Hàn là phương pháp công nghệ nối các kim loại hoặc phi kim loại với nhau bằng cách nung nóng chổ nố đến trạng thái hàn (chảy hoặc dẻo). Sau đó kim loại hóa rắn hoặc thông qua có lực ép, chỗ nối tạo thành mối liên kết loạ hoặ chỗ thà bền vững gọi là mối hàn.
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Master's thesis of Mechanical Engineering: Analysis of a vibration isolator with dual rate spring and damperIn the course of current research the procedure of obtaining of the piecewise linear vibration systems time and frequency responses have been developed. The method is partly analytical and partly numerical and is based on combining of linear solutions of different sections in a cycle of motion. In a row with the method of obtaining of the exact steady state time and frequency response, also it is provided sensitivity analysis of the vibration isolator. Numerical challenges that were raised during the modeling of the system’s frequency response and possible solutions of them have been considered. In addition, different normalizations of the model of the system are reviewed and their impact on the results is discussed.
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Gia công bằng áp lựcBiến dạng đàn hồi: mẫu chỉ biến dạng đàn hồi, ứng suất và biến dạng thay đổi tuyến tính, dỡ bỏ tải trọng - trở lại hình dạng, kích thước ban đầu. Điểm C đánh dầu giai đoạn mất ổn định của quá trình kéo mẫu. Điểm D đánh dấu sự xuất hiện đứt gãy của mẫu - khả năng biến dạng không còn nữa.
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Summary of The Ph.D thesis Transport mechanical engineering: Research on a proposed hull form of the container ship suitable for Vietnam river sea routeIn this thesis, we propose a mathematical model to improve the hull form of a container ship in the preliminary design stage, aiming to reduce the ship's resistance concerning constraints of Vietnam's river-sea route.
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PHD dissertation sumary: Research on the use of ULSD biodiesel fuel blend on marine diesel enginesObject and scope: Small ship diesel engines with the range of power from 50 hp to 100 hp; traditional diesel fuel with 0.05% sulfur content, ULSD with 0.001% sulfur content, and Biodiesel originated from coconut oil; fabrication of ultrasonic wave-based equipment/system to produce homogeneous fuel blend;fuel supply system, exhaust system, and control and test system of the engine; testing equipment for engine power and emissions parameters.
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Summary of Doctoral Thesis on Mechanical Engineering: Dynamic analysis and motion control of a fish robot driven by pectoral finsObjective: This dissertation explores the influence of pectoral fin structures at different swimming modes on a robotic fish's locomotion behavior; Some objectives are addressed to achieve the mentioned aim as follows: Firstly, new designs based on bio-inspired pectoral fin types are constructed. Secondly, to describe fin deformation and body part movement, novel dynamically mathematical models are developed.
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Summary of Mechanical engineering doctoral thesis: Optimizing the energy flow in controlling mechanical system oscillationThe main objective of the thesis is to provide general methods to control oscillation based on measurement of energy flow, namely: Find the optimal solution for passive control systems based on energy flows; propose the semi-active control algorithms to control the energy flow.
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