Essays about: "modal analysis"

Showing result 21 - 25 of 205 essays containing the words modal analysis.

  1. 21. Multibody modelling of the vibrations in an aircraft engine

    University essay from KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Author : Charly Mollet; [2022]
    Keywords : Vibrations; Multibody Modelling; Rolling Bearings; Rotor Dynamics; Reduction Processes; Vibrationer; multikroppsmodellering; rullingslager; rotordynamik; reducktionsprocesser;

    Abstract : During the assembly of aircraft engines, some clearance is left in the rolling bearings mainly to reduce friction. However this clearance might allow the rolling element to vibrate during flight. Indeed, unwanted vibrations called non-synchronous vibrations (NSV) appear on the data recorded by the sensors on some development engines. READ MORE

  3. 22. Structural Dynamics at Higher Frequencies using the Finite Element Method : Assessment of Solver Algorithms and Component Mode Synthesis for Dynamic Response Analysis of Large Structures

    University essay from KTH/Hållfasthetslära

    Author : Khashaiar Noushin; [2022]
    Keywords : ;

    Abstract : Scania is making a transition from traditional combustion engines to electric vehicles and therefore developing methodology for high frequency analysis of large structures. The computational time size of results files are impractically high, making any analysis infeasible. READ MORE

  4. 23. Who’s in charge here? Governance of e-scooters in Stockholm amid the sustainable urban mobility transition

    University essay from KTH/Urbana och regionala studier

    Author : Claire Borchers; Tobias Isaksson; [2022]
    Keywords : Sustainable mobility; transport policy; innovation; micromobility; e-scooters; Hållbar mobilitet; transportpolicy; innovation; mikromobilitet; elsparkcyklar;

    Abstract : Innovation is a necessary element to transition towards a more sustainable transport paradigm. Advancements made in electrification and digitalisation are creating new forms of urban mobility which have the potential to reduce the impact of transport and shift modal splits. READ MORE

  5. 24. Estimation of Input Forces on a Cutting Tool using Strain Output Signals

    University essay from Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Author : Ram Pradip Mahato; Jiacheng Ma; [2022]
    Keywords : Lathe tool; Multiple sensor signals; Modal analysis; Input force calculation; embedded sensor force; MATLAB;

    Abstract : Lathes are frequently used in industrial production. It is an important parameter to calculate the force exerted by the cutter head on the raw material. Knowing the force acting on the cutting tool will aid in predicting the displacement of the cutting edge as well as predict displacement of the workpiece. READ MORE

  6. 25. Dynamic Performance of a Tall Building to Earthquake Loading : Finding the optimum mass and stiffness

    University essay from KTH/Bro- och stålbyggnad

    Author : Andrés Alonso San Segundo; [2022]
    Keywords : ;

    Abstract : With the increasing cost of land, the development of ultra-high performance concrete, and the technological advancements in equipment and machinery, we are able to construct and refurbish skyscrapers like never before. How they are built, what materials they use, or what structural system defines them, all affect their dynamic response, which in the end is the combination of the stiffness and mass, two key parameters in engineering of tall buildings. READ MORE