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Relevant bibliographies by topics / Torsional vibration analyzer

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Academic literature on the topic 'Torsional vibration analyzer'

Author: Grafiati

Published: 3 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "Torsional vibration analyzer"

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PROF, G. S. KONDHALKAR. "THEORETICAL AND EXPERIMENTAL VALIDATION OF VISCOUS TORSIONAL DAMPER ON TURBOCHARGED INLINE SIX CYLINDER ENGINE." IJIERT - International Journal of Innovations in Engineering Research and Technology 4, no. 2 (2017): 59–72. https://doi.org/10.5281/zenodo.1462271.

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<strong><strong> </strong>The torsional vibration of diesel engines is severe issue due to increase of exciting force by higher pressure in turbocharged heavy duty engines. Diesel Engine crankshaft experiences the torsional vibration excitation torque due to the effect of cylinder firing pressure and the inertia of the reciprocating parts. These large torsional vibration amplitudes can cause noise,bearing wear,crankshaft failure. In order to attenuate the too large value of resonant torsional vibration amplitude the viscous damper is mounted on crankshaft crank nose end. The current work

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Yin, Zhen, Hua Li, Zi Yang Cao, Ou Xie, and Yan Li. "Simulation and Experiment of New Longitudinal-Torsional Composite Ultrasonic Elliptical Vibrator." Advanced Materials Research 338 (September 2011): 79–83. http://dx.doi.org/10.4028/www.scientific.net/amr.338.79.

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A new ultrasonic elliptic vibrator design method was proposed, the ultrasonic elliptic vibration was achieved by the structural curve of the longitudinal and torsional vibrations. The model, harmonic and transient analyses of the new longitudinal-torsional composite ultrasonic elliptical vibrator were performed by using the software ANSYS, the prototype of the new vibrator was tested by using impedance analyzer and PSV-400 laser Doppler vibrometer, the correctness of the finite element simulation results and the feasibility of the new longitudinal-torsional composite ultrasonic elliptical vibr

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Vance, J. M., and R. S. French. "Measurement of Torsional Vibration in Rotating Machinery." Journal of Mechanisms, Transmissions, and Automation in Design 108, no. 4 (1986): 565–77. http://dx.doi.org/10.1115/1.3258771.

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Five techniques for measurement of torsional vibration in a drive train are described, along with the advantages and disadvantages of each. Two laboratory test rigs, designed and constructed for experimental evaluation of various torsional vibration measurement techniques, are described. The measurement techniques investigated fall into three categories: a) those using signals from strain gages, b) those using signals from a magnetically transduced gear, and c) using signals optically transduced from a special tape applied to the shaft. One of the techniques described requires no specialized i

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Pokusaev, Mikhail N., Maksim M. Gorbachev, and Adel D. Ibadullaev. "EXPERIMENTAL EVALUATION OF THE ANTIVIBRATOR TECHNICAL CONDITION." Vestnik Gosudarstvennogo universiteta morskogo i rechnogo flota imeni admirala S. O. Makarova 14, no. 4 (2022): 591–99. http://dx.doi.org/10.21821/2309-5180-2022-14-4-591-599.

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One of the key problems that have developed today in the fleet during the operation of ships is the termination of supplying products from leading foreign manufacturers of dampers and antivibrators of torsional vibrations, which ensure the safe operation of critical elements of the engine complex. Also, the next confirmation of relevance is the fact that there are no maintenance service centers on the territory of the Russian Federation, nor specialists who carry out the defection and repair of such devices. The results of experimental studies to assess changes in the technical condition of th

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Zhang, Yun Dian, and Bing Zhang. "Development of Cylinder with Multiple Diagonal Slits for Ultrasonic Longitudinal - Torsional Vibration Turn-Milling." Advanced Materials Research 139-141 (October 2010): 2291–94. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.2291.

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Cylinder with multiple diagonal slits is one of the core parts of longitudinal-torsional resonance ultrasonic device. Its structure was more complex, the traditional processing processed it very difficult, and the traditional analytical methods were also difficult to make accurate description to system. The paper researched cylinder with multiple diagonal slits using experimental method, analysis of electrical discharge machining forming tools of the slits and three-dimensional modeling; developed cylinder with multiple diagonal slits, analyzed longitudinal-torsional resonance and mechanical p

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Alhunaishi, Ahmed Saleh. "Analysis of Torsional Vibrations of Rotary Winding Machines." Thamar University Journal of Natural & Applied Sciences 4, no. 4 (2023): 85–107. http://dx.doi.org/10.59167/tujnas.v4i4.1296.

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This work is chosen to analyze the rotary winding machines because these machines are existed in our country and this analysis is practical from the side of input values and getting the results. Good rotary winding machine design practice demands the analysis of the system to insure that the reaction due to operation of the machine will not cause damaging vibrations. The widest phenomenon in vibration forms in mechanical transmission is the torsional vibration. The aim of this work is the analysis of the torsional vibrations of these rotary winding machines and to minimize that vibrations and

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Ovezov, B. A., K. O. Shcherbakova, L. R. Kalendarova, P. A. Romanov, and D. A. Kuznetsova. "Reducing critical effects of torsional vibrations induced by PDC bits during rock destruction." Proceedings of higher educational establishments. Geology and Exploration, no. 4 (November 14, 2022): 91–100. http://dx.doi.org/10.32454/0016-7762-2022-64-4-91-100.

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Introduction. Torsional vibrations caused by drilling using a polycrystalline diamond compact (PDC) bit are analysed using wellbore data obtained under various drilling modes. The drilling caused by torsional vibrations are analysed. Two types of torsional vibrations, including those caused by the cutting action of a bit and by frictional forces.Aim. To investigate the induction of torsional vibrations as a result of rock destruction by PDC bits.Materials and methods. The research methodology was based on “Richard-Germay-Detournay” and “Tian-Detournay” bit designs and methods for reducing the

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Shpachuk, V. P., M. A. Zasiadko, T. O. Suprun, and V. V. Dudko. "Variation coefficient of torsional vibrations of the connection nodes of vibrating machines." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 6 (2021): 85–89. http://dx.doi.org/10.33271/nvngu/2021-6/085.

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Purpose. To formalize the dependence of the eigenfrequencies of translational and torsional vibrations of the structural elements of the vibrating machine articulated by the connection node on their design parameters and mechanical characteristics, as well as regulatory requirements for vibration activity, strength and accuracy. To develop a method for selecting the design parameters of the elastic band element of the package, taking into account the specified values of the amplitude and frequency characteristics of the dynamic loads reproduced by the supporting structure and the coefficient o

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Carpenter, Chris. "Bottomhole-Assembly Dynamics Software Helps Mitigate Twistoffs While Drilling." Journal of Petroleum Technology 74, no. 12 (2022): 72–74. http://dx.doi.org/10.2118/1222-0072-jpt.

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_ This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 202174, “Mitigating Twistoffs While Drilling With the Help of Bottomhole-Assembly Dynamics Software,” by Mario A. Rivas, SPE, Andres A. Ramirez, and Bader S. Al‑Zahrani, SPE, Saudi Aramco, et al. The paper has not been peer reviewed. _ A major challenge during drilling operations is the occurrence of twistoffs on bottomhole assembly (BHA) components. To overcome this challenge, a study was performed of twistoffs experienced on BHA components. Based on the findings, drilling operations and recomme

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Wramner, Lina. "Dual-mass flywheels with tuned vibration absorbers for application in heavy-duty truck powertrains." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 10-11 (2020): 2500–2508. http://dx.doi.org/10.1177/0954407020916940.

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As the heavy-duty combustion engine development goes towards lower rotational speeds and higher cylinder pressures, the torsional vibrations increase. There is therefore a need to identify and study new types of vibration absorbers that can reduce the level of torsional vibrations transmitted from the engine to the gearbox. In this work, the concept of a dual-mass flywheel combined with a tuned vibration absorber is analysed. The tuned vibration absorber efficiently reduces the vibration amplitudes for engine load frequencies near the tuning frequency, but it also introduces an additional reso

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Dissertations / Theses on the topic "Torsional vibration analyzer"

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Ndohi, Raphaël. "Contribution à l'étude numérique et expérimentale des déformations élastiques d'une structure moteur." Compiègne, 1985. http://www.theses.fr/1985COMPS135.

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Wu, Feng-Sheng, and 吳逢昇. "Torsional vibration analyses of a damped shafting system using tapered shaft element." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/54924335320126715542.

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碩士<br>國立高雄海洋科技大學<br>輪機工程研究所<br>98<br>This paper presents a tapered shaft element such that the torsional vibration characteristics of a damped shafting system can be easily determined with effect of continuous non-uniformity of the shaft cross-sections being considered. To this end, the shape functions of the tapered shaft element are firstly derived. Then, the stiffness and mass matrices of the last shaft element are determined by means of the Lagrange’s equations. To confirm the reliability of the presented theory, the numerical results obtained from the presented technique are compared with

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Book chapters on the topic "Torsional vibration analyzer"

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Han, Qingkai, Jing Wei, Qingpeng Han, and Hao Zhang. "Torsional Dynamics of Gear-Rotor System in Wind Turbine Gearbox." In Dynamics and Vibration Analyses of Gearbox in Wind Turbine. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2747-5_2.

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Han, Qingkai, Jing Wei, Qingpeng Han, and Hao Zhang. "Parameter Optimization for Planetary Gear System Based on Torsional Dynamics." In Dynamics and Vibration Analyses of Gearbox in Wind Turbine. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2747-5_3.

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Han, Qingkai, Jing Wei, Qingpeng Han, and Hao Zhang. "Influence of Unbalance and Misalignment on Load-Sharing Coefficient of Gear-Rotor System Based on Torsional Dynamics." In Dynamics and Vibration Analyses of Gearbox in Wind Turbine. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2747-5_4.

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Liu, Jieshan, Jinxiang Li, and Lican Liao. "The Study on Nonlinear Flutter of Long-Span Suspension Bridge." In Advances in Frontier Research on Engineering Structures. IOS Press, 2023. http://dx.doi.org/10.3233/atde230184.

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Bridges are subject to large-amplitude vibrations, known as wind-induced vibrations, which can cause various problems in high winds. Flutter is the most serious vibration caused by self-excited force. In addition, long-span suspension bridges are flexible frames that are prone to large deformations. Many researchers have shown that flutter instability is affected by non-linear characteristics. In this paper, the equivalent linearisation method (ELM) is used to solve the flutter state of the nonlinear flutter system of a long-span suspension bridge with cubic torsional stiffness. By solving the

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"Structural Analysis of Bridges." In Bridges’ Dynamics, edited by George T. Michaltsos and Ioannis G. Raftoyiannis. BENTHAM SCIENCE PUBLISHERS, 2012. http://dx.doi.org/10.2174/978160805220211201010136.

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This chapter deals with the bridge as structural element. Single span bridges, two-span and three-span bridges, arched bridges, cable-stayed and suspension bridges are analyzed in detail regarding their bending and torsional vibration. The most important relations for studying single cable vibration, harp and fan type cable systems with dense or not arrangement of cables as well as the curved in plane bridges are presented. The determination of modal shapes for some characteristic cases of bridges is also given in detail.

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Jiang, Zhaozhuang, Yan Zhu, Juan Du, and Shihao Sun. "The Structure Design and Performance Analysis of an Automated Guided Vehicle (AGV) Frame for Large Load." In Advances in Transdisciplinary Engineering. IOS Press, 2024. http://dx.doi.org/10.3233/atde240216.

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Aiming at the problem of the limited load of automated guided vehicle (AGV) used in logistics transportation, design a simple structure, safe and reliable AGV frame. The frame adopts seesaw structure to reduce the deviation of center of gravity, so that it can bear large load, and analyze its performance. The three-dimensional modeling of the AGV frame was created with SOLIDWORKS software and imported into HYPERWORKS for static analysis of full-load bending conditions, full-load bending and torsion conditions, emergency braking conditions, and emergency turning conditions to determine whether

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Qiu, Ju, and Chaofeng Liu. "Verification and Validation of Supersonic Flutter of Rudder Model for Experiment." In Optimization Problems in Engineering [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98384.

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The abrupt and explosive nature of flutter is a dangerous failure mode, which is closely related to the structural modes. In this work, the principal goal of the study is to produce the model, which is used very accurately for flutter predictions. Mode correctness of the model can correct the test deflects by the optimization technique----Sequential Quadratic Programming (SQP). The optimization of two finite element models for two flight conditions, transonic and supersonic speeds, had the different objectives which were defined by the nonlinear and linear eigenvector errors. The first and sec

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Conference papers on the topic "Torsional vibration analyzer"

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Pagar, Nitin D., and S. H. Gawande. "Dynamic Analysis of End Conditions for Shell Side Pipings of STHE." In ASME 2019 Gas Turbine India Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gtindia2019-2775.

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Abstract Shell and tube heat exchangers [STHE] play a very vital role in energy conversion systems, process industries like chemical, pharmaceutical, refineries etc. and in different power plants. For designing shell and tube heat exchangers, the tubes vibrational response (internally) to any random excitations of fluid flow need to be understandable. Also, circumferential inlet pipe or tube at the entrance region of the shell side, generally subject to the fluid thrust in the bends of typical pipe arrangements. It produces loadings forces and moments, leading to unavoidable vibrations. The go

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Yamauchi, Takahiro, Yukimi Yamazaki, and Jouji Kimura. "Experiment and Computation Analyses for Torsional Vibration of Crankshaft System with Viscous Torsional Damper on Diesel Engine." In Noise & Vibration Conference & Exposition. SAE International, 1999. http://dx.doi.org/10.4271/1999-01-1748.

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Fujiwara, Hiroyuki, Tadashi Tsuji, and Osami Matsushita. "Vibration of Bending-Torsion Coupled Resonance in a Rotor." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-12778.

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In certain rotor systems, bending-torsion coupled resonance occurs when the rotational speed Ω (= 2π Ωrps) is equal to the sum/difference of the bending natural frequency ωb (= 2π fb) and torsional natural frequency ωθ(= 2πfθ). This coupling effect is due to an unbalance in the rotor. In order to clarify this phenomenon, an equation was derived for the motion of the bending-torsion coupled 2 DOF system, and this coupled resonance was verified by numerical simulations. In stability analyses of an undamped model, unstable rotational speed ranges were found to exist at about Ωrps = fb + fθ. The c

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Bhadbhade, Vikrant, and Nader Jalili. "Coupled Flexural/Torsional Vibrations of a Piezoelectrically-Actuated Vibrating Beam Gyroscope." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-16049.

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In this paper, the coupled flexural-torsional vibrations of a cantilever beam with rigid mass attached to its end are studied. The beam base is subjected to a rotational motion, forming a vibrating beam gyroscope undergoing bending-twisting vibrations. The primary (flexural) vibrations are produced in the beam using a piezoelectric patch actuator. Due to the gyroscopic effect, secondary (torsional) vibrations are induced in the beam. First, a detailed mathematical modeling of the system is developed using extended Hamilton's Principle. Partial differential equations of the motion for both bend

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Tan, Weizhong, Cong Zhang, Zhe Tian, and Xinping Yan. "Analysis of Torsional Vibration of Large-Scale Ship Propulsion Shafting." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-42392.

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This paper is based on the multi-body dynamic coupling theory and finite element theory. A multi-body dynamic coupling model of the large-scale vessel is built and the torsion vibration characteristics of slow-speed ship propulsion shafting are analyzed. The measurements of shafting torsional vibration in the real ship are compared with the results from the simulation model. Then, the differences between measurements and simulation results are analyzed in multi-orders. The analysis result indicates that the simulation results are almost the same with measurements obtained from the real ship, w

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Rajagopalan, Vinayaka N., and John M. Vance. "Diagnosing Coupled Lateral-Torsional Vibrations in Turbomachinery." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50125.

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Rotordynamic instability, commonly observed as subsynchronous vibration, is a serious problem that can cause heavy damage to a turbomachine or make it incapable of operation due to high vibration levels. However, all subsynchronous vibrations are not necessarily unstable. A way to quickly diagnose them would be helpful. In an earlier paper, the authors presented data from experiments that simulated various causes of sub-synchronous vibrations, some causes being genuine rotordynamic instabilities and some others being benign (stable), and identified ways to diagnose and classify the subsynchron

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Dong, Guo-Qing, and Wen-Bin Shangguan. "Structural Vibration Analysis and Sound Quality Improvement for a Four-Cylinder Engine." In Noise and Vibration Conference & Exhibition. SAE International, 2023. http://dx.doi.org/10.4271/2023-01-1153.

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<div class="section abstract"><div class="htmlview paragraph">An Inline 4-cylinder engine is equipped with second-order balance shafts.When the engine is running under full load in 5000rpm,the engine generated severe structural radiation noise.The bench test analysis shows that the main reason is the resonance of the engine near 800Hz and 1500Hz. In this paper, a method for modeling and analyzing the vibration of the engine structure is proposed, and the sound quality of the engine is evaluated and imporved by the Moore–Glasberg loudness method. Firstly, the finite element model of

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Yucel, Adil, Alaeddin Arpaci, and Ekrem Tufekci. "Coupled Axial-Flexural-Torsional Vibration of Internally Damped Timoshenko Frames." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-24861.

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In this study, free in-plane and out-of-plane bending vibrations of frame structures have been analyzed together with torsional vibration. Axial extension, rotational inertia and shear effects have also been considered. The frame structure has been constructed as having two beams with doubly symmetric cross-sections and connected at any angle to each other. These types of frames frequently appear on ships as bridge wings which are probably the most problematic members experiencing severe vibration. Internal damping has been incorporated into the analyses by using a complex modulus of elasticit

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Du, Dongmei, Zhi Zhang, and Qing He. "A System of Calculation and Analysis of Torsional Vibration for Turbine-Generator Shafts." In ASME 2007 Power Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/power2007-22019.

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Due to the disturbance of electric power system or other shock load, the torsional vibration of turbine-generator shafts occurs. Alternative shear stress due to torsional vibration decreases the shafts life, even results in shafts broken. It is significant to calculate and analyze natural properties and the responses of tosional vibration excited by the disturbance of electric power system in order to analyze and prevent catastrophic accident. The calculation and analysis system of torsional vibration of turbine-generator shafts is developed. With multi-mass lumped model, the model of torsiona

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Salehzadeh, Roya, Nicholas Candelino, Mohammad Javad Khodaei, Amin Mehrvarz, and Nader Jalili. "Parameter Sensitivity Analysis of Piezoelectrically-Actuated Flexural/Torsional Vibrating Beams." In ASME 2020 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/dscc2020-3310.

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Abstract A numerical parameter sensitivity analysis is performed on the bending and torsional vibrations of a flexural-torsional vibrating beam gyroscope model. The gyroscope analyzed in this work is comprised of a rotating cantilever beam with a point-mass attached to its free end and a piezoelectric actuator fixed to a portion of its length. The governing equations of motion are derived using extended Hamilton’s principle and the steady-state magnitude response of the system is obtained through frequency domain methods. A sensitivity analysis is then carried out for the parameters including

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