SWINFEN‐STYLES, L., GARVEY, S. D., GIDDINGS, D., CÁRDENAS, B. and ROUSE, J. P., 2022. Analysis of a Wind‐Driven Air Compression System Utilising Underwater Compressed Air Energy Storage: Energies Energies. 15(6), SWINFEN-STYLES, L., GARVEY, S. D., GIDDINGS, D., CARDENAS, B. and ROUSE, J. P., 2022. Analysis of a Wind-Driven Air Compression System Utilising Underwater Compressed Air Energy Storage: Energies Energies. 15(6), EVANS, D., PARKES, D., DOONER, M., WILLIAMSON, P., WILLIAMS, J., BUSBY, J., HE, W., WANG, J. H. and GARVEY, S., 2022. Salt Cavern Exergy Storage Capacity Potential of UK Massively Bedded Halites, Using Compressed Air Energy Storage (CAES) (vol 11, 4728, 2021): Applied Sciences-Basel Applied Sciences-Basel. 12(7), CÁRDENAS, B., SWINFEN-STYLES, L., ROUSE, J., HOSKIN, A., XU, W. and GARVEY, S. D., 2021. Energy storage capacity vs. renewable penetration: A study for the UK: Renewable Energy Renewable Energy. 171, 849-867 SHABBIR, S., GARVEY, S. D., DAKKA, S. M. and ROTHWELL, B. C., 2021. Seal failure in aerospace applications – creating a global open-source database: Sealing Technology Sealing Technology. 2021(2), 7-9 SHABBIR, S., GARVEY, S. D., DAKKA, S. M., ROTHWELL, B. C., SU, R., LEACH, R. and WESTON, N., 2021. Analysis of the tribological interaction of a polytetrafluoroethylene-lined radial lip oil seal, shaft and lubricant sample: Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology. ROUSE, J. P., GARVEY, S. D., CÁRDENAS, B., HOSKIN, A., SWINFEN-STYLES, L. and XU, W., 2021. A case study investigation into the risk of fatigue in synchronous flywheel energy stores and ramifications for the design of inertia replacement systems: Journal of Energy Storage Journal of Energy Storage. 39, EVANS, D., PARKES, D., DOONER, M., WILLIAMSON, P., WILLIAMS, J., BUSBY, J., HE, W., WANG, J. and GARVEY, S., 2021. Salt cavern exergy storage capacity potential of uk massively bedded halites, using compressed air energy storage (Caes): Applied Sciences (Switzerland) Applied Sciences (Switzerland). 11(11), CÁRDENAS, B., SWINFEN-STYLES, L., ROUSE, J. and GARVEY, S. D., 2021. Short-, medium-, and long-duration energy storage in a 100% renewable electricity grid: A UK case study: Energies Energies. 14(24), MARFOLI, A., NARDO, M. D., GARVEY, S., DEGANO, M., VASHISHT, R., TURNBULL, R. and GERADA, C., 2021. Modelling, Analysis and Design Considerations of Multi-Phase Bearingless Permanent Magnet Synchronous Machine CÁRDENAS, B., DAVENNE, T. R., WANG, J., DING, Y., JIN, Y., CHEN, H., WU, Y. and GARVEY, S. D., 2019. Techno-economic optimization of a packed-bed for utility-scale energy storage: Applied Thermal Engineering Applied Thermal Engineering. 153, 206-220 GARVEY, S. D., JOHNSON, G., PEARSON, S., KALITA, K., MOORE, G. and KIRK, A., 2019. Control of rotors suspended on low-cost active magnetic bearings CARDENAS, B., SWINFEN-STYLES, L., ROUSE, J. P., HOSKIN, A., XU, W. and GARVEY, S. D., 2019. Energy storage for a high penetration of renewables DAVENNE, T. R. G., GARVEY, S. D., CARDENAS, B. and ROUSE, J. P., 2018. Stability of packed bed thermoclines: Journal of Energy Storage Journal of Energy Storage. 19, 192-200 ROUSE, J. P., GARVEY, S. D., CÁRDENAS, B. and DAVENNE, T. R., 2018. A series hybrid “real inertia” energy storage system: Journal of Energy Storage Journal of Energy Storage. 20, 1-15 CÁRDENAS, B., DAVENNE, T. R. and GARVEY, S., 2018. A sign-preserving filter for signal decomposition: Proceedings of the Institution of Mechanical Engineers. Part I: Journal of Systems and Control Engineering Proceedings of the Institution of Mechanical Engineers. Part I: Journal of Systems and Control Engineering. DAVENNE, T. R., GARVEY, S. D., CARDENAS, B. and SIMPSON, M. C., 2017. The cold store for a pumped thermal energy storage system: Journal of Energy Storage Journal of Energy Storage. CÁRDENAS, B., PIMM, A. J., KANTHARAJ, B., SIMPSON, M. C., GARVEY, J. A. and GARVEY, S. D., 2017. Lowering the cost of large-scale energy storage: High temperature adiabatic compressed air energy storage HE, W., WANG, J., WANG, Y., DING, Y., CHEN, H., WU, Y. and GARVEY, S., 2017. Study of cycle-to-cycle dynamic characteristics of adiabatic Compressed Air Energy Storage using packed bed Thermal Energy Storage: Energy Energy. 141, 2120-2134 BERTOLA, L., COX, T., WHEELER, P., GARVEY, S. and MORVAN, H., 2016. Superconducting Electromagnetic Launch System for Civil Aircraft: IEEE Transactions on Applied Superconductivity IEEE Transactions on Applied Superconductivity. 26(8), AHUMADA, C., GARVEY, S., YANG, T., KULSANGCHAROEN, P., WHEELER, P. and MORVAN, H., 2016. Minimization of electro-mechanical interaction with posicast strategies for more-electric aircraft applications AHUMADA SANHUEZA, C., BRISTOT, A., KUMAR, S., SCHNEIDER, N., GARVEY, S. and MORVAN, H., 2016. An Integrated System's Approach Towards Aero Engine Subsystems Design: SAE Aerospace Systems and Technology Conference, ASTC 2016 SAE Aerospace Systems and Technology Conference, ASTC 2016. 2016-September(September), POLENTA, V., GARVEY, S. D., CHRONOPOULOS, D., LONG, A. C. and MORVAN, H. P., 2016. Novel stiffeners exploiting internal pressurisation to enhance buckling behaviour under bending loads: Thin-Walled Structures Thin-Walled Structures. 105, 81-89 GARVEY SD, PIMM AJ, BUCK JA, WOOLHEAD S, LIEW KW, KANTHARAJ B, GARVEY JE, BREWSTER BD, 2015. Analysis of a wind turbine power transmission system with intrinsic energy storage capability Wind Engineering. 39,
KANTHARAJ B, GARVEY SD and PIMM AJ, 2015. Compressed air energy storage with liquid air capacity extension Applied Energy. 157, 152-164 GARVEY, S. D., EAMES, P. C., WANG, J. H., PIMM, A. J., WATERSON, M., MACKAY, R. S., GIULIETTI, M., FLATLEY, L. C., THOMSON, M., BARTON, J., EVANS, D. J., BUSBY, J. and GARVEY, J. E., 2015. On generation-integrated energy storage: Energy Policy Energy Policy. 86, 544-551 V. POLENTA, S.D. GARVEY, CHRONOPOULOS D, A.C. LONG and H.P. MORVAN, 2014. Optimal internal pressurisation of cylindrical shells for maximising their critical bending load Thin-Walled Structures. 87(Feb. 2015), Pages 133–138 PIMM AJ, GARVEY SD, 2014. The economics of hybrid energy storage plant International Journal of Environmental Studies. 71, GARVEY, S.D., LANCASTER, P., POPOV, A.A., PRELLS, U. and ZABALLA, I., 2013. Filters connecting isospectral quadratic systems Linear Algebra and Its Applications. 438(4), 1497-1516 TISSEUR, F, GARVEY, SD and MUNRO, C, 2011. Deflating Quadratic Matrix Polynomials With Structure Preserving Transformations Linear Algebra And Its Applications. 435(3), 464-479 PIMM, AJ, GARVEY, SD and DREW, RJ, 2011. Shape And Cost Analysis Of Pressurized Fabric Structures For Subsea Compressed Air Energy Storage Proceedings Of The Institution Of Mechanical Engineers Part C-Journal Of Mechanical Engineering Science. 225(C5), 1027-1043 KHOO, WKS, KALITA, K, GARVEY, SD, HILL-COTTINGHAM, RJ, RODGER, D and EASTHAM, JF, 2010. Active Axial-Magnetomotive Force Parallel-Airgap Serial Flux Magnetic Bearings Ieee Transactions On Magnetics. 46(7), 2596-2602 KALITA, K, KHOO, WKS, GARVEY, SD, HILL-COTTINGHAM, RJ, RODGER, D and EASTHAM, JF, 2010. Passive Contra-Magnetized Parallel-Airgap Serial Flux Magnetic Bearings Proceedings Of The Institution Of Mechanical Engineers Part C-Journal Of Mechanical Engineering Science. 224(C11), 2515-2524 GARVEY, S.D., 2010. Structural capacity and the 20 MW wind turbine Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy. 224(8), 1083-1115 PRELLS, U and GARVEY, SD, 2009. On The Class Of Strictly Isospectral Systems Mechanical Systems And Signal Processing. 23(6), 2000-2007 JIFFRI, S., GARVEY, S.D. and RIX, A.I.J., 2009. Enriching balancing information using the unbalance covariance matrix Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science. 223(8), 1815-1826 HIGHAM, NJ, MACKEY, DS, TISSEUR, F and GARVEY, SD, 2008. Scaling, Sensitivity And Stability In The Numerical Solution Of Quadratic Eigenvalue Problems International Journal For Numerical Methods In Engineering. 73(3), 344-360 GARVEY, SD and SHAHAJ, A, 2008. Vibration Absorption For Quasi-Periodic Excitation - Methods And Two Renewable-Energy Applications.
HOULSTON, P.R., GARVEY, S.D. and POPOV, A.A., 2007. Modal Control of Vibration in Rotating Machines and Other Generally-Damped Systems Journal of Sound and Vibration. 302(1-2), 104-116 KHOO, W.K.S., GARVEY, S.D. and KALITA, K., 2007. The Specific Load Capacity of Radial-Flux Magnetic Bearings IEEE Transactions on Magnetics. 43(7), 3293-3300 KHATTAK, A.R., GARVEY, S.D. and POPOV, A.A., 2006. Repeated resonances in folded-back beam structures Journal of Sound and Vibration. 290(1-2), 309-320 GARVEY, SD, VAN EETVELT, P and PRELLS, U, 2006. Decoupling The Equations Of Isospectral Flow
ZAIDI, NA, POPOV, AA and GARVEY, SD, 2006. The Influence Of Suspension And Tyre Dynamics On Drivellne Nvh
HOULSTON, PR, GARVEY, SD and POPOV, AA, 2006. Modal Control Of Vibration In Rotating Machines And Other Generally Damped Systems
GARVEY, S.D., WILLIAMS, E.J., COTTER, G., DAVIES, C. and GRUM, N., 2005. Reduction of noise effects for in situ balancing of rotors Journal of Vibration and Acoustics. 127(3), 234-246 FRISWELL, M.I., PRELLS, U. and GARVEY, S.D., 2005. Low-rank damping modifications and defective systems Journal of Sound and Vibration. 279(3-5), 757-774 GARVEY, S.D., PRELLS, U., FRISWELL, M.I. and CHEN, Z., 2004. General isospectral flows for linear dynamic systems Linear Algebra and Its Applications. 385, 335-368 KHOO, WKS, GARVEY, SD, KALITA, K and HOULSTON, PR, 2004. Vibration Control With Lateral Force Produced In Electrical Machines
PENNY, JET, FRISWELL, MI, LEES, AW and GARVEY, SD, 2004. A Simple But Versatile Rotor Model
GARVEY, SD, PENNY, JET, FRISWELL, MI and LEES, AW, 2004. The Stiffening Effect Of Laminated Rotor Cores On Flexible-Rotor Electrical Machines
GARVEY, S.D., JONES, I.A., KHOO, W.K.S. and CARE, I.C.D., 2003. On the mechanical stability of circular discs in high specific load capacity magnetic bearings Materials Science Forum. 440/441, 481-488
PRELLS, U., FRISWELL, M.I. and GARVEY, S.D., 2003. Use of geometric algebra: compound matrices and the determinant of the sum of two matrices Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. 459(2030), 273-285 GARVEY, S.D., TISSEUR, F., FRISWELL, M.I., PENNY, J.E.T. and PRELLS, U., 2003. Simultaneous tridiagonalization of two symmetric matrices International Journal of Numerical Methods in Engineering. 57(12), 1643-1660 GARVEY, S.D., CHEN, Z., FRISWELL, M.I. and PRELLS, U., 2003. Model reduction using structure preserving transformations In: Proceedings of the International Modal Analysis Conference IMAC XXI.
GARVEY, SD, JONES, IA, KHOO, WKS and CARE, ICD, 2003. On The Mechanical Stability Of Circular Discs In High Specific Load Capacity Magnetic Bearings
GARVEY, SD, 2003. On General Isospectral Flows For Vibrating Systems
PENNY, J.E.T., FRISWELL, M.I. and GARVEY, S.D., 2003. Detecting aliased frequency components in discrete Fourier transforms Mechanical Systems and Signal Processing. 17(2), 473-482 GARVEY, S.D., 2003. On general isospectral flows for vibrating systems Materials Science Forum. 440/441, 11-18
SMITH, S. and NORRIS, B.J., 2003. Childrens mouthing behaviour Injury control and safety promotion. 10(3), 145-154
GARVEY, S.D., FRISWELL, M.I. and PRELLS, U., 2002. Co-ordinate transformations for second order systems. Part I: general transformations Journal of Sound and Vibration. 258(5), 885-909 GARVEY, S.D., FRISWELL, M.I., WILLIAMS, E.J., LEES, A.W. and CARE, I.D., 2002. Robust balancing for rotating machines Proceedings of the Institution of Mechanical Engineers. Part C, Journal of Mechanical Engineering Science. 216(11), 1117-1130 GARVEY, S.D., PRELLS, U. and FRISWELL, M.I., 2002. Optimum selective excitation of modes in general linear second-order systems In: International Conference on Identification in Engineering Systems.
WILLIAMS, E.J., GARVEY, S.D. and MCMILLAN, A., 2002. Dynamic allocation of degrees of freedom in modelling rapid transients in complex structures In: International Seminar on Modal Analysis (ISMA). 617-626
GARVEY, S.D., FRISWELL, M.I. and PRELLS, U., 2002. Deflating second order systems In: International Seminar on Modal Analysis (ISMA). 579-588
KHOO, SWK, FITTRO, RL and GARVEY, SD, 2002. An Ac Self-Bearing Rotating Machine With A Single Set Of Windings
GARVEY, SD, FRISWELL, MI and PRELLS, U, 2002. The Role Of Clifford Algebra In Structure-Preserving Transformations For Second-Order Systems
PRELLS, U, FRISWELL, MI and GARVEY, SD, 2002. Compound Matrices And Pfaffians: A Representation Of Geometric Algebra
GARVEY, SD, FRISWELL, MI and PRELLS, U, 2002. Co-Ordinate Transformations For Second Order Systems. Part I: General Transformations Journal Of Sound And Vibration. 258(5), 885-909 GARVEY, SD, FRISWELL, MI, WILLIAMS, EJ, LEES, AW and CARE, ID, 2002. Robust Balancing For Rotating Machines Proceedings Of The Institution Of Mechanical Engineers Part C-Journal Of Mechanical Engineering Science. 216(11), 1117-1130 VERSHININ, YA, GARVEY, SD and HOLDING, DJ, 2002. High Dynamic Precision Adaptive Control System For Solution Of Fault Tolerance Problem
WILLIAMS, EJ, GARVEY, SD and MCMILLAN, AJ, 2002. Dynamic Allocation Of Master Degrees Of Freedom In Modelling Rapid Transients In Complex Structures
GARVEY, SD, FRISWELL, MI and PRELLS, U, 2002. Deflating Second Order Systems
KHOO, S.W., FITTRO, R.L. and GARVEY, S.D., 2002. An AC self-bearing rotating machine with a single set of windings In: IEE Conference Publication. 292-297
GARVEY, S.D., FRISWELL, M.I. and PENNY, J.E.T., 2001. Clifford algebraic perspective on second-order linear systems Journal of Guidance, Control, and Dynamics. 24(1), 35-45 GARVEY, SD, FRISWELL, MI and PENNY, JET, 2001. Clifford Algebraic Perspective On Second-Order Linear Systems Journal Of Guidance Control And Dynamics. 24(1), 35-45 FRISWELL, MI, PENNY, JET, GARVEY, SD and LEES, AW, 2001. Damping Ratio And Natural Frequency Bifurcations In Rotating Systems
PRELLS, U, FRISWELL, MI and GARVEY, SD, 2001. Application Of Geometric Algebra: Modified Classical Damping And Defective Systems
GARVEY, SD, PRELLS, U and FRISWELL, MI, 2001. Modal Correlation Measures For General Viscous-Damped Structures - A Clifford Algebraic Approach
GARVEY, SD, PRELLS, U and FRISWELL, MI, 2001. Diagonalising Coordinate Transformations For Systems With General Viscous Damping
PENNY, JET and GARVEY, SD, 2001. Vibration Testing Using A 'Modal Spear'
FRISWELL, MI, PENNY, JET and GARVEY, SD, 2001. Model Reduction For Structures With Damping And Gyroscopic Effects
FRISWELL, M.I., PENNY, J.E.T., GARVEY, S.D. and LEES, A.W., 2001. Damping ratio and natural frequency bifurcations in rotating systems Journal of Sound and Vibration. 245(5), 960-968 PENNY, JET, GARVEY, SD and FRISWELL, MI, 2000. Is Rotor Dynamics A Particular Case Of Structural Dynamics?
GARVEY, SD, NORRIS, WT and WRIGHT, MT, 2000. The Role Of Integrated Passive Components In Protecting Motor Windings Iee Proceedings-Electric Power Applications. 147(5), 367-370 GARVEY, SD, 2000. Motor And Drive Integration With Passive Components Realised Using The Stator Core
ISA, AAM, PENNY, JET and GARVEY, SD, 2000. The Dynamics Of Bolted And Laminated Rotors.
GARVEY, SD, FRISWELL, MI and NORRIS, WT, 2000. A Modal Approach To The Electromagnetic Dynamics Of Cable-Motor Systems
GARVEY, SD and PENNY, JE, 2000. Finite Element Modelling Of Rotor-Stator Systems
GARVEY, SD, FRISWELL, MI and PENNY, JET, 2000. A Geometric-Algebraic Approach To Identifying Second Order Continuous Systems.
GARVEY, SD and LE FLEM, GD, 1999. Tangential Forces Matter.
GARVEY, SD, NORRIS, WT, LUFFY, S and REGAN, R, 1999. Prediction Of High Frequency Characteristics Of The Windings Of Large Electrical Machines: A Lumped-Parameter Reluctance-Network Analysis.
LUFF, S, GARVEY, SD and NORRIS, WT, 1999. Predicting High Frequency Characteristics Of The Windings Of Large Electrical Machines - A Transmission Line Analysis Approach.
GARVEY, SD, FRISWELL, MI and PENNY, JET, 1999. Some Further Insight Into Self-Adjoint Second-Order Systems Journal Of Vibration And Control. 5(2), 237-252 FRISWELL, MI, GARVEY, SD, PENNY, JET and SMART, MG, 1999. Comments On "Computing Critical Speeds For Rotating Machines With Speed Dependent Bearing Properties" - Reply
SUN, XZ, ZHU, QM, PENNY, JET and GARVEY, SD, 1999. Fault Diagnosis Of A Class Of Afc Mining Equipment
GARVEY, SD, EKE, UH, PENNY, JE and FRISWELL, MI, 1999. Mixed-Formulation Representations Of Sub-Systems
ZHU, QM, HAYNS, MR and GARVEY, SD, 1999. Design Of A Neural Network Enhanced Auto-Tuning Pid Controller
GARVEY, SD and GLEW, CN, 1999. Magnetostrictive Excitation Of Vibration In Machines - A Modal Approach.
GARVEY, S.D., FRISWELL, M.I. and PENNY, J.E.T., 1999. Some further insight into self-adjoint second-order systems Journal of Vibration And Control. 5(2), 237-252 FRISWELL, MI, GARVEY, SD and PENNY, JET, 1998. The Convergence Of The Iterated Irs Method Journal Of Sound And Vibration. 211(1), 123-132 GARVEY, SD, PENNY, JET and FRISWELL, MI, 1998. The Relationship Between The Real And Imaginary Parts Of Complex Modes Journal Of Sound And Vibration. 212(1), 75-83 FRISWELL, MI, GARVEY, SD, PENNY, JET and SMART, MG, 1998. Computing Critical Speeds For Rotating Machines With Speed Dependent Bearing Properties Journal Of Sound And Vibration. 213(1), 139-158 GARVEY, SD, FRISWELL, MI and PENNY, JE, 1998. Efficient Component Mode Synthesis With Non-Classically Damped (Sub)Structures
FRISWELL, MI, GARVEY, SD and PENNY, JET, 1998. The Importance Of Vector Subspaces In Modal Analysis
FRISWELL, MI, GARVEY, SD and PENNY, JET, 1997. Using Iterated Irs Model Reduction Techniques To Calculate Eigensolutions
GARVEY, SD, PENNY, JE and FRISWELL, MI, 1997. Towards A New Method For Identifying Systems
PENNY, J.E., FRISWELL, M.I. and GARVEY, S.D., 1996. Quantifying the correlation between measured and computed mode shapes Journal of Vibration And Control. 2, 123-144 GARVEY, SD, FRISWELL, MI and PENNY, JE, 1996. Evaluation Of A Method For Automatic Selection Of Measurement Locations Based On Subspace-Matching.
FRISWELL, MI, GARVEY, SD, PENNY, JET and CHAN, A, 1996. Selection Of Control Topology For Decentralised Multi-Sensor Multi-Actuator Active Control
GARVEY, SD, COLAK, I and WRIGHT, MT, 1995. Variable Inertia Test For Full Load Temperature Rise Testing Of Induction Machines Iee Proceedings-Electric Power Applications. 142(3), 222-224 HE, QF, ROACH, PM, WRIGHT, MT and GARVEY, SD, 1995. A Novel Processing Structure To Reduce Computational Delay In High-Performance Digital Controllers
GARVEY, SD, FRISWELL, MI and PENNY, JE, 1995. The Response Of Electrical Machine Stators To Magnetic Forcing
FRISWELL, MI, PENNY, JET and GARVEY, SD, 1995. Using Linear-Model Reduction To Investigate The Dynamics Of Structures With Local Nonlinearities Mechanical Systems And Signal Processing. 9(3), 317-328 BEAVEN, RW, WILKES, LD, WRIGHT, MT, GARVEY, SD and FRISWELL, MI, 1995. Application Of 4 Control Strategies To High-Speed Independent Drive Systems Control Engineering Practice. 3(8), 1059-1065 FRISWELL, MI, GARVEY, SD and PENNY, JET, 1995. Model-Reduction Using Dynamic And Iterated Irs Techniques Journal Of Sound And Vibration. 186(2), 311-323 BEAVEN, RW, WRIGHT, MT, GARVEY, SD, FRISWELL, MI and SEAWARD, DR, 1995. The Application Of Setpoint Gain Scheduling To High-Speed Independent Drives Control Engineering Practice. 3(11), 1581-1585 COLAK, I, GARVEY, SD and WRIGHT, MT, 1995. Simulation Of Induction Machines Using Phase Variables And The Explicit Inverse Inductance Matrix International Journal Of Electrical Engineering Education. 32(4), 354-365
PENNY, JET, FRISWELL, MI and GARVEY, SD, 1994. Automatic Choice Of Measurement Locations For Dynamic Testing Aiaa Journal. 32(2), 407-414 GARVEY, SD and PENNY, JET, 1994. Representing Periodic Structures Efficiently As Substructures Journal Of Sound And Vibration. 178(1), 79-94 PORADA, S, GARVEY, SD and PENNY, JET, 1994. Using High Shaft-Orders And Other Nonsynchronous Vibration In The Detection Of Shaft-Rubbing
FRISWELL, MI, GARVEY, SD and PENNY, JET, 1994. Model Reduction Using An Iterated Irs Technique
GARVEY, SD, FRISWELL, MI and PENNY, JET, 1994. Efficient Evaluation Of Composite Structure Modes
GARVEY, SD, 1989. The Vibrational Behavior Of Laminated Components In Electrical Machines