Essays about: "nonlinear vibrations"

Showing result 6 - 9 of 9 essays containing the words nonlinear vibrations.

  1. 6. Improved lifetime of a rubber spring in an articulated hauler through product development

    University essay from Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Author : Pontus Nilsson; Jan Tordsson; [2017]
    Keywords : Rubber spring; elastomer; principal stretch; nominal stress; maximum surface stress; lifetime;

    Abstract : Dampening systems are important in heavy vehicles utilized in rough terrains, with purpose to reduce shocks and vibrations with negative influences on the vehicle and, more importantly, on the operator of the vehicle. During the years the heavy vehicles require sturdier construction parts, due to demands on higher load capacity, where the easy solution to scale up the construction parts is not always applicable for dampening systems with nonlinear behavior. READ MORE

  3. 7. Structure-borne sound transmission in wall-floor timber junctions with damping elastomers

    University essay from Linnéuniversitetet/Institutionen för byggteknik (BY)

    Author : Sarah Stenberg; Adrien Vercruysse; [2016]
    Keywords : Elastomers; Sound Flanking Transmission; Vibrations Flanking Transmission; Wall-floor junctions; Structural Dynamics;

    Abstract : The wooden multi-storey building industry is facing persistent sound transmission problems at low frequencies. Inserting elastomers within wall-floor junctions is common usage nevertheless no accurate studies have elucidated the real behavior of those nonlinear combined materials yet. READ MORE

  4. 8. LQG-control of a Vertical Axis Wind Turbine with Focus on Torsional Vibrations

    University essay from Avdelningen för systemteknik

    Author : Adam Alverbäck; [2012]
    Keywords : LQG-control; Vertical axis wind turbine; torsional oscillations;

    Abstract : In this thesis it has been investigated if LQG control could be used to mitigate torsional oscillations in a variable speed, fixed pitch wind turbine. The wind turbine is a vertical axis wind turbine with a 40 m tall axis that is connected to a generator. READ MORE

  5. 9. Development and Validation of Methods for Nonlinear System Identification

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : HARSHITH KUMAR NOOJI VENKATRAMANA; GOWTHAM NATARAJAN; VIJAY VARMA BHUPATHIRAJU; [2011]
    Keywords : Nonlinear vibrations; System Identification; Simulation; Shaker testing; Impulse testing.;

    Abstract : In structural engineering, it is common to neglect the nonlinear effects. This is no longer feasible with increasing complex designs and higher demands on the simulation models. This thesis presents a study of the concept of nonlinearity in a structure with emphasis on system identification. Two identification methods are presented in this work. READ MORE