Sökning: "vibration"

Visar resultat 26 - 30 av 524 avhandlingar innehållade ordet vibration.

1. 26. Prediction of engine component loads using previous measurements

   Författare :Pär Mikaelsson Elmén; Mårten Olsson; Jan-Olov Aidanpää; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; engine; engine block vibration; engine block twist; engine block bending; vibration measurement; vibration estimation; rigid body vibrations; assumed modes; bending modes; torsion modes; system modification; Hållfasthetslära; Solid Mechanics;

   Sammanfattning : Internal combustion engines are used in many applications. The same engine type may have different components mounted to it depending upon its use. These engine mounted components need to be designed against fatigue in order to withstand the engine vibrations. Measured engine vibrations are commonly used as input data for fatigue estimation. LÄS MER

3. 27. Fluid-conveying beams in transverse vibration

   Författare :Jan Henrik Sällström; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; plug flow; ambient medium; support accelerations; rigid bodies; complex modal synthesis; exact and polynominal finite elements; taut strings; Rayleigh-Timoshenko theory; transverse linear beam vibration; prescribed loads; sensitivity analysis; stability optimization; divergence and flutter instability; Euler-Bernoulli theory; axially moving materials; stationary and transient vibration;

   Sammanfattning : .... LÄS MER

4. 28. Vibration of sandwich beams

   Författare :Daniel Backström; Anders Nilsson; Goran Pavic; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Acoustics; Akustik;

   Sammanfattning : Some aspects and properties of the lateral vibration of sandwich beams are investigated, including the concept of apparent bending stiffness and shear modulus, allowing the sandwich beam dynamics to be approximately described by classical beam theory. A sixth order beam model is derived including boundary conditions, and the free and forced response of some beam configurations analyzed. LÄS MER

5. 29. Multistage gearboxes : vibration based quality control

   Författare :Johan Wändell; Hans Bodén; Ulf Carlsson; Kjell Ahlin; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Acoustics; Akustik;

   Sammanfattning : In this thesis, vibration based techniques for detection of localised surface damages in multistage gearboxes are presented and evaluated. A modern vehicle gearbox is a complex system and the number of potential errors is large. For instance, surface damages can be caused by rough handling during assembly. LÄS MER

7. 30. On the Load Distribution and Design of a Chain Drive

   Författare :Ingvar Troedsson; Maskinelement; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tension force; tensioner; oscillation; chain drive; vibration; load distribution; Mechanical engineering; hydraulics; vacuum technology; vibration and acoustic engineering; Maskinteknik; hydraulik; vakuumteknik; vibrationer; akustik;

   Sammanfattning : Three methods are presented to calculate the load distribution in a chain drive containing two sprockets and one chain. The rollers, which are in contact with the sprockets, can move along the tooth flanks and their positions are given by force equilibrium. LÄS MER