1-20 of 3409 Search Results for

Mathematics of Vibrating Systems

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 14–16, 2017
Paper Number: SPE-184697-MS
.... Overall, the results indicate that the closed loop controller is a viable strategy for mitigating torsional vibrations. A control-centric drill string experimental laboratory model is developed. The experimental model is used to verify the proposed mathematical model. A feedback controller...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-118
.... The coupled system "structure- liquid" is considered. The problem is solved using theory of hydroelasticity. The theoretical problem is solved using combination of two numerical methods: a module-element method and a boundary element method. The mathematical model also accounts for the effect of damping...
Proceedings Papers

Paper presented at the Offshore Technology Conference Asia, March 20–23, 2018
Paper Number: OTC-28426-MS
... of conservation of energy, which could be used to decide the optimum location and depth of the vortex suppression devices for the cylinders undergoing Vortex Induced Vibration in a uniform flow. Based on the mathematical studies, modal antinodes are found as the optimum locations for the installation...
Proceedings Papers

Paper presented at the The Fifteenth International Offshore and Polar Engineering Conference, June 19–24, 2005
Paper Number: ISOPE-I-05-261
... damping factors and power flow mode vectors. To meet different vibration control requirements, new design criteria are proposed so as to dissipate maximum vibration energy and/or to control power flow in a specific vibration mode of the system. This mathematical model is demonstrated through an example...
Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206064-MS
... equipment lobe configuration rotational speed drillstring design upstream oil & gas eccentricity bit selection drilling operation flow rate torque rotation torsional vibration speed motor speed mud motor coefficient angular velocity directional drilling systems and equipment...
Journal Articles
J Ship Res (2020)
Paper Number: SNAME-JSR-07190041
Published: 03 September 2020
..., and the corresponding torsional vibration differential equations of the four submodels are established. On this basis, the mathematical model of the propulsion shafting system and the differential equations of torsional vibration are established by using the modularization method and lumped parameter method. Finally...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference and Exhibition, March 6–8, 2012
Paper Number: SPE-151096-MS
... of the casing/fish system in relation to the axial excitation frequency being applied. Therefore, the theory described in this paper represents a step forward in pre-job planning. The characteristics of the dynamic vibration absorber described here are used to create the mechanism – and those are as follows...
Journal Articles
J Ship Prod Des 37 (03): 205–214.
Paper Number: SNAME-JSPD-09180033
Published: 19 August 2021
...Huabing Wen; Wei Liu; Junhua Guo; Kun Zhang; Yang Li; Yue Liu Since an inerter has been widely used in the field of vibration isolation, the combination of the inerter and the rubber part inevitably becomes a trend. In this work, a parallel inerter-spring-damper system (II-ISD) was introduced...
Proceedings Papers

Paper presented at the The Sixteenth International Offshore and Polar Engineering Conference, May 28–June 2, 2006
Paper Number: ISOPE-I-06-121
... artificial intelligence drilling system matrix mathematical model simulation reentry operation scheduling controller equation coefficient engineering lpv controller gain scheduling controller experimental setup On Vibration Control of Flexible Pipes in Ocean Drilling System Takayuki Ioki...
Proceedings Papers

Paper presented at the Rocky Mountain Oil & Gas Technology Symposium, April 16–18, 2007
Paper Number: SPE-107697-MS
... mathematical model to simulate the vibration and identify resonance conditions before and during the drilling operations. This paper fills the gap. Traditionally drillstring vibrations have been analyzed using bit-force as a boundary condition. Accuracy of such analyses is often questionable...
Journal Articles
J Ship Res 65 (01): 55–61.
Paper Number: SNAME-JSR-05180022
Published: 17 March 2021
... system modeling and in the determination of excitement and damping forces. Moreover, whirling vibration calculation mathematics is much more complex than torsional or axial calculations. The marine propulsion shaft can be studied as a selfsustained vibration system, which can be modeled using the Van der...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3223
... and instability will occur in the riser. Paidoussis et al. (1974) studied the dynamic characteristics of vertical pipes transporting fluid through physical experiments as well as mathematical models, and then analyzed the influence of Coriolis force and Centrifugal force on the whole vibration system. VIV...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, November 15–17, 2011
Paper Number: IPTC-14241-MS
... location and configuration within the drilling assembly is shown in Figure 2. The developed model will be the combination of theories of mechanical vibrations and mathematical principles governing the behaviour of a typical drillstring or vibrating system subjected to torsional vibrations. The stepped...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference and Exhibition, March 4–6, 2014
Paper Number: SPE-168034-MS
... The effects of inducing vibration into the motion of a single Polycrystalline Diamond Compact (PDC) cutter have been investigated. An electro-dynamic system was fabricated that could induce vibration into the cutter scraping motion. The vibration axes were described in terms of the bit...
Proceedings Papers

Paper presented at the SPE Gas Technology Symposium, May 15–17, 2006
Paper Number: SPE-99356-MS
... improvement of drilling performance in the area is expected. Mathematical Model Drillstrings vibrate in three modes: axial, torsional and transversal vibrations. Usually one of them dominates in a given system. Combination of two or three of them can play important roles in harsh conditions. At present...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 1–3, 2011
Paper Number: SPE-139830-MS
... beneficial impact upon drill string tool and bit life. frequency stick slip mitigation excitation tool axial excitation tool section upstream oil & gas axial excitation system torsional vibration control rpm drilling operation spe iadc 139830 axial excitation tool wob variation torque...
Proceedings Papers

Paper presented at the SPE/IADC Middle East Drilling Technology Conference and Exhibition, May 25–27, 2021
Paper Number: SPE-202080-MS
... Abstract The drilling industry faces several challenges related to downhole vibration; amongst the solutions introduced to alleviate those challenges, a unique Axial Agitation System is often considered. This paper qualitatively analyses the effect of the Axial Agitation System in directional...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 22–24, 2014
Paper Number: SNAME-SMC-2014-T27
... gears with attached generators, multiple geared diesel engine arrangements and direct-coupled two-stroke engines with a CPP system. In order to predict the behavior of any physical systems, a model suitable for mathematical analysis is of great importance. The requirement of the model is it has...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1303
... analytical solution cosbl 1 differential equation logic & formal reasoning sft deflection china tunnel artificial intelligence natural frequency tube body anchorage system university equation natural vibration frequency Study on Mathematical Model and Exact Solution of Overall...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-264
... to analysis the transfer function of acceleration because the acoustic wave can be described as acceleration in mathematical. Thus, transfer function about vibration and acceleration can be efficient to effect of the vibration on the sonar system of AUV. In this paper, the transfer function which is described...

Product(s) added to cart

Close Modal