Vibration Analysis / Sound Pressure Analysis

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  1. 251 – Alternator Vibration Analysis

    In this example, the electromagnetic force generated in the stator core of a claw pole alternator is obtained, and acceleration is evaluated with an electromagnetic force - struct…

  2. 254 – Vibration Analysis of Oil-Immersed Large Transformer

    This document introduces a case example of evaluating the vibrations of a large transformer. Parts that are usually the source of vibrations are the core, tank, and windings, but …

  3. 226 – Vibration Characteristics Analysis of SPM Motors

    In this example, the acceleration is evaluated by obtaining the electromagnetic force generated in the stator core of the SPM motor at multiple rotation speeds and coupling with t…

  4. 20 – Sound Pressure Analysis of an SPM Motor

    This Application Note shows an example of an evaluation of a reactor’s sound pressure, when acquiring electromagnetic force generated by a stator core for a SPM motor and linking …

  5. 234 – Vibration Characteristics Analysis of an Induction Motor

    In this example, electromagnetic force generated in the induction motor stator core is obtained, and an example of evaluating sound pressure by linking it with the eigenmode of th…

  6. 184 – Reactor Sound Pressure Analysis taking Magnetostriction into Account

    These notes will conduct an analysis of changed vibratory force and show a case study of confirming the impact magnetostriction has on vibration noise.

  7. 138 – Vibration Analysis of an SR Motor

    This Application Note presents an example of how to obtain the electromagnetic force generated in the stator core of an SR motor and evaluate the sound pressure by linking it to t…

  8. 114 – Vibration Analysis of an Outer Rotor Motor

    This note presents the use of a magnetic field analysis and structural analysis to obtain the sound pressure caused by electromagnetic vibrations in an outer rotor motor with hole…

  9. 97 – Sound Pressure Analysis of a Transformer

    This example presents the use of a coupled magnetic field and structural analysis to obtain the sound pressure distribution accounting for the electromagnetic force of the core wh…

  10. 4 – Sound Pressure Analysis of a Reactor

    This Application Note shows an example of an evaluation of a reactor’s sound pressure when a part of a spacer has been removed.

  11. 9 – Sound Pressure Analysis of a Loudspeaker

    This Application Note presents how the frequency characteristics of sound pressure can be obtained using the constant Lorenz force on the voice coil, regardless of the frequency.

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