Academic literature on the topic 'PROPELLER SHAFTS'

Volvo Construction Equipment’s driveline development department initiated this thesis work. It was calculated for two students working for 20 week period of time, which equals 30 hp each. The reason for Volvo CE to start the cooperation was the large number of variance of companion flanges and propeller shafts generating additional work for several departments within Volvo. The problem statement consisted of questions, which should result in information about the number of variants and combinations of propeller shafts and companion flanges used; the reason for the quantity of variants and what factors are affecting the choice of propeller shafts and companion flanges. They should also give answers to how article reduction can be implemented and what recommendations can be given to Volvo for the future. Using a Gantt chart as a planning tool helped the working process to progress in a structured way. Different methods of data collection were done to secure the problem understanding. Tools such as a literature review, function diagrams, and interviews were used to complete the data collection. Co-workers from the purchasing department and the part number reduction team were interviewed. Besides the in-house contact an opportunity was given to interview the suppliers during visits at their factories. Computer software was used as a resource of confirming information and mapping currently used components. The mapping process resulted in interesting findings, which were further researched. Together with the information from the interviews, reasons for the variety of used components were clarified. To deepen the problem understanding a more detailed variation mapping was made, showing what driveline components were generating most variants of companion flanges. The findings made and the recommendations received from the suppliers were unitized in a best case scenario. The questions from the problem statement were analyzed and answered. The recommendations given regarding to Volvo Construction Equipment’s propeller shaft program included guidelines for modularization. The success of modularization is based on among other factors, on particular documentation, continuous communication and close cooperation with the suppliers. This report can be defined as the first step towards a modularized propeller shaft program for Volvo CE’s haulers and wheel loaders.

Федосенко, М. М. Технологічне підготовлення заготівельного виробництва вилок карданних валів : випускна кваліфікаційна робота : 131 "Прикладна механіка" / М. М. Федосенко ; керівник роботи О. П. Космач ; НУ "Чернігівська політехніка", кафедра технологій машинобудування та деревообробки. – Чернігів, 2021. – 108 с.<br>У кваліфікаційній роботі магістра на основі сформульованих завдань здійснено технологічне підготовлення заготівельного виробництва вилок ковзання карданних валів. В конструкторському розділі запропоновано удосконалення конструкції попереднього штампа для створення сприятливих умов формування кованки. Запропоновано модернізацію ковочного пакету, що полягає в розміщенні поряд з ковочними штампами обрізного блоку. В технологічному розділі розроблено технологічний процес виготовлення нижньої вставки попереднього рівчака та технологічний процес виготовлення кованки вилки ковзання. В організаційному розділі проаналізовані організаційні аспекти технологічного підготовлення виробництва, здійснено організаційне проектування робочого місця коваля-штампувальника. В заключних розділах роботи наведено розрахунки техніко-економічної ефективності проектних розробок. Запропоновані інженерні рішення з питань охорони праці.<br>In the master's qualification work, on the basis of the formulated tasks, the technological preparation of procurement production of sliding forks of cardan shafts was carried out. In the design section, it is proposed to improve the design of the previous stamp to create favorable conditions for the formation of the forge. The modernization of the forging package is proposed, which consists in placing an edging block next to the forging stamps. In the technological section the technological process of manufacturing the lower insert of the previous stream and the technological process of manufacturing the fork of the sliding fork were developed. In the organizational section the organizational aspects of technological preparation of production are analyzed, the organizational design of the workplace of the blacksmith- puncher is carried out. The final sections of the work provide calculations of technical and economic efficiency of project development. Engineering solutions on safety were proposed.

<p>This degree project has been made in cooperation with engineers working for GM Engineering/Saab Automobile AB in Trollhättan. The given name by Saab for the project is “Fuel efficiency improvements in All Wheel Drive(AWD)-system”. The main tasks of this thesis work were to investigate the size of the power losses in different parts on the propeller shaft, to design a computer program that calculates</p><p>coordinates and angles on a propeller shaft and to investigate the possibilities to put together a simplified formula that calculates the natural frequencies on a propeller shaft.</p><p>The main parts of this report are a compilation of the theory about AWD and mostly about the parts on the propeller shaft, and also a description of the developed computer program called Propeller Shaft Calculator. This report doesn’t concern power losses in the different joints because there were no such general equations to be found. The most common way to calculate the power losses inside a joint is to do tests were the power loss is measured at different angles, torque and speed and then use that data to put together an approximated equation.</p><p>Most of the work on this project has been on theory studies and on programming. The main result of the project is the program Propeller Shaft Calculator.</p><p>Propeller Shaft Calculator is a program that is designed in Microsoft Excel. All the menus are programmed in the visual basic editor in Excel. The program is supposed to be used as a help while designing new propeller shafts.</p><p>Propeller Shaft Calculator can calculate all the coordinates, lengths, angles and directions on a propeller shaft. It also calculates natural frequencies, plunge, estimated power loss on the second shaft and angles in the joints. In the program you can choose to do calculations on four different configurations of propeller shafts but can quite</p><p>easy upgrade the program with more choices.</p><p>Basically the program works like this:</p><p>First you choose the right propeller shaft in the main menu. Then you fill out the indata sheet with coordinates, lengths, material data and so on. As you type in the input data the output data will appear in the out-data sheet next to the in-data. Every propeller shaft has also a calculations sheet were more detailed calculations can be</p><p>found.</p><p>The program also has a built in help function and a warning function that lights a warning sign next to the values if they are outside the limits.</p>

Utilisation de la technique d'activation en couches superficielles. Formation du radioelement cobalt 56 par reaction nucleaire. Etude du profil de concentration et mesure in situ d'usure et d'ecaillage (cas des pompes a carburant). Aspects metallurgiques. Application a l'industrie aeronautique

MIG Welding had been widely used in the industry since decades for welding purposes due to its higher weld deposition rate, Ease of use, weld quality and Longer pass welding capability. These all features of this welding process makes the process most prefered welding process for the welding of propeller/Drive shaft. MIG has been proven as the easiest of all the welding processes that uses arc. In automobile sector, its had been widely used. The process uses continuously fed electrode to form the weld bead and joint formation. The process becomes more robust and efficient when it is automated and robots are inherited with the welding process. The usage and combination of robots with MIG Welding makes it robust but it needs to be optimized and process parameter like welding current, welding voltage, gas flow rate must be of such value that prevents any kind of weld defects to be formed over the weld bead. The most major issue that occurs while welding of propeller shafts is improper weld penetration and pin holes. The main aim of this research was to find the optimized value of all the weld parameters with the help of Taguchi design using minitab software and look for any other types of defects while welding and to rectify them and make the process as robust as possible. Addition of automation in any process makes it free from human errors that may occur.As robots can perform repeatative tasks more efficiently we just have to teach them what they have to do and they have to do that. MIG welding when combined with the robot can perform welding at same point without any deviation in position and weld parameters like arc length. To maintain arc length to be constant in MIG welding is almost impossible for any human being which directly effects the weld quality and penetration. An effort was undertaken to study the effects of using robotic arm for welding gun and effects of various process parameters over the weld bead. When non optimized parameters were used for the welding process there we have seen various defects in the final product.

碩士<br>華梵大學<br>機電工程研究所<br>96<br>This essay is talking about the effects of each component exercising while simulating the equal speed of Rezppa Type universal joint used on the propeller shaft. The simulating method is to tear apart of the equal speed of Rezppa Type propeller shaft and use the Solid Words 3D drawing software to build the appearance. Then use CAE analysis software ADAMS to set up the parameter of each component and condition while exercising. Set up three different speed *1000rpm*, *2000rpm*, *3000rpm* to run the simulating with actual practicing.Through the simulation, we can understand the effects between Rezppa Type propeller shaft and steel ball while exercising.We can realize better the character of propeller shaft after the ADAMS simulation.

碩士<br>國立海洋大學<br>造船工程學系<br>85<br>This paper is aimed to study the performance of the propeller under different cavitation numbers at inclined shaft condition, and to compare the performance between the New-Section propeller and the Newton-Rader propeller. In order to calculate the effective thrust and the real efficiency for the craft, the horizontal and vertical forces which are both created by the propeller at inclined shaft are measured. When the inclined shaft angle is 8 degrees and the advance coefficient is near the propeller design point, the measrued vertical force is about 40% ~ 50% of the shaft thrust. And, the efficiency of the propeller at 8-degree shaft inclination is significantly less than that of the propeller with horizontal shaft. The experiment also shows that the efficiency of the New-Section propeller is greater than that of the Newton-Rader propeller at inclined shaft condition regardless cavitation numbers. In addition, the "Unsteady Propeller Lifting-Surface Theory" is applied to calculate the vertical force produced by the propeller at inclined shaft condition. Due to the simple mathmatical model about wake in propeller theory, the computational results are much lower than the measured values.

碩士<br>國立高雄海洋科技大學<br>輪機工程研究所<br>94<br>The object of this thesis is to study the vibration behaviour of the propulsive shafting system induced by a rotating marine propeller carrying single or multiple eccentric concentrated masses. To this end, the entire propulsive shafting system is firstly represented as a three-degree-of-freedom torsional-and-lateral-coupled vibration system. Then, the expressions for total kinetic energy and total potential energy of the entire propulsive shafting system are derived. Next, based on the theory of Lagrange’s equations, the equations of motion of the entire propulsive shafting system are derived and the mass matrix, damping matrix, stiffness matrix and external force vector of the entire vibrating system are determined. Finally, the forced vibration responses of the propulsion shafting system are obtained by solving the last equations of motion with Newmark direct integration method. Some factors closely relating to the current research topic, such as mass, total number and distribution of eccentric concentrated mass, etc, are investigated. From the numerical results, it is found that the influence of eccentric mass(es) of the propeller on the vibration characteristics of the propulsive shafting system is significant.