Search: WFRF:(Lopez Arteaga Ines) > On efficient and ad...
Fältnamn | Indikatorer | Metadata |
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000 | 04239nam a2200505 4500 | |
001 | oai:DiVA.org:kth-202978 | |
003 | SwePub | |
008 | 170310s2017 | |||||||||||000 ||eng| | |
020 | a 9789177292920q print | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-2029782 URI |
040 | a (SwePub)kth | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a vet2 swepub-contenttype |
072 | 7 | a dok2 swepub-publicationtype |
100 | 1 | a Afzal, Mohammad,d 1987-u KTH,MWL Marcus Wallenberg Laboratoriet4 aut0 (Swepub:kth)u16pzxzu |
245 | 1 0 | a On efficient and adaptive modelling of friction damping in bladed disks |
264 | 1 | a Stockholm :b KTH Royal Institute of Technology,c 2017 |
300 | a 70 s. | |
338 | a electronic2 rdacarrier | |
500 | a QC 20170310 | |
520 | a This work focuses on efficient modelling and adaptive control of friction damping in bladed disks. To efficiently simulate the friction contact, a full-3D time-discrete contact model is reformulated and an analytical expression for the Jacobian matrix is derived that reduces the computation time drastically with respect to the classical finite difference method. The developed numerical solver is applied on bladed disks with shroud contact and the advantage of full-3D contact model compared to a quasi-3D contact model is presented. The developed numerical solver is also applied on bladed disks with strip damper and multiple friction contacts and obtained results are discussed. Furthermore, presence of higher harmonics in the nonlinear contact forces is analyzed and their effect on the excitation of the different nodal diameters of the bladed disk are systematically presented. The main parameters that influence the effectiveness of friction damping in bladed disks are engine excitation order, contact stiffnesses, friction coefficient, relative motion at the friction interface and the normal contact load. Due to variation in these parameters during operation, the obtained friction damping in practice may differ from the optimum value. Therefore, to control the normal load adaptively that will lead to an optimum damping in the system despite these variations, use of magnetostrictive actuator is proposed. The magnetostrictive material that develops an internal strain under the influence of an external magnetic field is employed to increase and decrease the normal contact load. A linearized model of the magnetostrictive actuator is used to characterize the magnetoelastic behavior of the actuator. A nonlinear static contact analysis of the bladed disk reveals that a change of normal load more than 700 N can be achieved using a reasonable size of the actuator. This will give a very good control on friction damping once applied in practice. | |
650 | 7 | a TEKNIK OCH TEKNOLOGIERx Maskinteknikx Teknisk mekanik0 (SwePub)203012 hsv//swe |
650 | 7 | a ENGINEERING AND TECHNOLOGYx Mechanical Engineeringx Applied Mechanics0 (SwePub)203012 hsv//eng |
650 | 7 | a TEKNIK OCH TEKNOLOGIERx Maskinteknikx Energiteknik0 (SwePub)203042 hsv//swe |
650 | 7 | a ENGINEERING AND TECHNOLOGYx Mechanical Engineeringx Energy Engineering0 (SwePub)203042 hsv//eng |
653 | a High cycle fatigue | |
653 | a Friction contact | |
653 | a Jacobian matrix | |
653 | a Shroud contact | |
653 | a Strip damper | |
653 | a Multiharmonic balance method | |
653 | a Contact stiffness | |
653 | a Cyclic symmetry | |
653 | a Nodal diameter | |
653 | a Magnetostrictive actuator | |
653 | a Magnetic field | |
653 | a Engineering Mechanics | |
653 | a Teknisk mekanik | |
700 | 1 | a Kari, Leif,c Professoru KTH,MWL Marcus Wallenberg Laboratoriet,Royal Institure of Technology4 ths0 (Swepub:kth)u1et0yya |
700 | 1 | a Lopez Arteaga, Ines,c Professoru KTH,MWL Marcus Wallenberg Laboratoriet,Eindhoven University of Technology4 ths0 (Swepub:kth)u1gy0h8d |
700 | 1 | a Gola, Muzio M,c Professoru Politecnico di Torino - Turin Technical University4 opn |
710 | 2 | a KTHb MWL Marcus Wallenberg Laboratoriet4 org |
856 | 4 | u https://kth.diva-portal.org/smash/get/diva2:1080367/FULLTEXT01.pdfx primaryx Raw objecty fulltext |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-202978 |
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