Sökning: "transfer path analysis TPA"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden transfer path analysis TPA.

  1. 1. Estimation of blocked forces from a rear drive unit (RDU) in a test rig fixture

    Master-uppsats, KTH/Teknisk akustik

    Författare :Sanjay Jayachandran; [2022]
    Nyckelord :Acoustics; Vibration; Sound; Mechanics; Blocked Forces; Transfer Path Analysis; Component-based TPA; Vibro-acoustics;

    Sammanfattning : In the modern world, vehicle manufacturers are not the sole producer of every component in a vehicle but instead assign different subsystems to various OEMs (Original Equipment Manufacturer). Subsystems such as Rear Drive Units (RDU), Power Transfer Units (PTU), E-drives etc. are developed separately and then integrated into the main vehicle. LÄS MER

  3. 2. Estimation of Blocked Forces in an Assembly with Rear Drive Unit as a Source

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Srujeeth Khanna Bala; [2021]
    Nyckelord :Component based TPA; source characterized forces; FEM; Contact forces; ISO20270:2019; Blocked forces; Automotive; NVH; sound and vibration; komponentbaserad TPA; karaktärisering av bullerkällor; FEM; kontaktkrafter; blockerade krafter; bilindustri; ljud och vibrationer; ISO20270:2019;

    Sammanfattning : Experimental validations are widely used for studying dynamic structural behaviors and these studies involve defining the structures completely as being used in real time. While in numerical simulations such detailed features are not specified to ease the computation, thereby deviating from accurate results. LÄS MER

  4. 3. Component-Based Transfer Path Analysis and Hybrid Substructuring at high frequencies : A treatise on error modelling in Transfer Path Analysis

    Master-uppsats, KTH/Maskinkonstruktion (Avd.)

    Författare :Harikrishnan Venugopal; [2020]
    Nyckelord :Dynamic Substructuring; Error modelling; Transfer Path Analysis; Uncertainty Propagation; Dynamisk substrukturering; Feluppskattning; Överföringsanalys; Osäkerhetspropagering;

    Sammanfattning : The field of modal testing and analysis is currently facing a surge of interest in error modelling. Several errors which occur during testing campaigns are modelled analytically or numerically and propagated to various system coupling and interface reduction routines effectively. LÄS MER

  5. 4. Transfer Path Analysis of Wind Noise on a Passenger Car

    Master-uppsats, KTH/Farkost och flyg

    Författare :Ren Huawei; [2019]
    Nyckelord :Transfer Path Analysis TPA ; Wind Noise; Principle Com-ponent Analysis PCA ; Matrix Inversion Method; Transfer Path Analysis TPA ; Wind Noise; Principle Com-ponent Analysis PCA ; Matrix Inversion Method;

    Sammanfattning : Over the last years, due to the development of quieter engines and drivetrains, the importance of addressing the vehicle wind noise problem has significantly increased.In this thesis work, several existing Transfer Path Analysis methods have been applied on an experimental database acquired during a wind tunnel test on a passenger car with the objective of analyzing the distribution of the wind noise sources and their contribution to the target microphones located inside the vehicle. LÄS MER

  7. 5. Transfer Path Analysis of a Passenger Car

    Master-uppsats, KTH/MWL Marcus Wallenberg Laboratoriet

    Författare :Jakub Cinkraut; [2015]
    Nyckelord :Transfer Path Analysis TPA ; Tyre cavity resonance; Deflection shape analysis; Source Path Contribution SPC SW; Impedance matrix method; Road decomposition method;

    Sammanfattning : Even though there are no regulations on the interior noise level of passenger cars, it is a significant quality aspect both for customers and for car manufacturers. The reduction of many other car noise sources pushed tyre road noise to the forefront. LÄS MER