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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Torsional vibration"”.
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Torsional vibration analysis of automotive drivelines
One of the most important source of noise and vibrations associated with vehicles is the vibration of driveline systems. Such phenomena are subjectively associated with customer complaints. In this study the torsional vibrations of driveline systems were investigated using discretised and lumped …
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Longitudinal and torsional vibration of drill strings
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1986.
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Nonlinear Torsional Vibration in Two Degrees of Freedom
Made available in DSpace on 2014-12-05T19:15:49Z (GMT). No. of bitstreams: 1 0003999.pdf: 2272215 bytes, checksum: f077d765eb0a3776160f4c825923f800 (MD5) Previous issue date: 1952
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Bond graph modeling of hydraulic circuits on a sweet sorghum harvester
… measurements at three driveline angles showed a torsional vibration with a primary harmonic at driveline rpm and a secondary at twice driveline rpm. A combination of Cardan joint characteristics, mass unbalance, the secondary couple, and non-linear driveline and V-belt stiffness was used to model …
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Piezoelectric Energy Harvesting for Powering Wireless Monitoring Systems
… Ambient energy in different forms such as vibration, movement, heat, wind, and waves otherwise wasted can be converted into usable electricity using proper transduction mechanisms to power sensors and low-power devices or charge rechargeable batteries. This dissertation focuses on the …
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Nonlinear flexural-flexural-torsional dynamics of metallic and composite beams
… equations describing the flexural-flexural-torsional vibration of metallic and composite beams. The twisting curvature is used to define a physical twisting variable which makes the equations of motion unique and independent of the rotation sequence of the Euler angles. A …
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Neutralizador dinâmico de vibrações torcionais viscoelásticos aplicado em sistemas rotodinâmicos
Dynamic viscoelastic vibration neutralizers are devices used in the passive control of vibrations. The main characteristics that make them an advantageous choice are directly related to the viscoelastic materials used in the construction of these auxiliary systems. This doctoral thesis deals with …
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Numerical and field data analysis of drill stem vibration
<p>"Drill stem vibration is a major cause of premature failure of drill stem components and drilling inefficiency. In severe cases, drill stem vibration may lead to wellbore instability that could lead to increased operational cost. Drill stem vibrations are affected by design decisions and the …
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Transient analysis and vibration suppression of a cracked rotating shaft with ideal and nonideal motor passing through a critical speed
… Galerkin Method is applied. Longitudinal vibration, shear deformation and torsional vibration are neglected. In the second part of this study, the vibration suppression of a cracked, simply supported, rotating shaft with a rigid disk is discussed, with an ideal and a nonideal motor, …
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Vibration-Based Health Monitoring of Multiple-Stage Gear Train and Differential Planetary Transmission Involving Teeth Damage and Backlash Nonlinearity
<p>The objective of this thesis is to develop vibration-based fault detection strategies for on-line condition monitoring of gear transmission systems. The study divides the thesis into three sections. First of all, the local stresses created by a root fatigue crack on a pinion spur gear are …
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Šestiválcový vznětový motor pro užitková vozidla
Účelem této diplomové práce je navrhnout klikový hřídel pro šestiválcový motor užitkového vozidla, který je jedním z řády unifikovaných motorů. Hlavní části jsou návrh konfiguraci klikového hřídele, výběr způsobu vyvážení sil a momentů klikového hřídele, zpracování výkresové dokumentace hlavních …