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36 855 (0,132s)

Výsledek výzkumu

Excitation by rotation of forces

Excitation by rotation of forces has been designed as addition to sweept sine excitation and phase resonance method used during ground vibration tests of aircraft structures. The method is based on a multipoint excitati...

JU - Aeronautika, aerodynamika, letadla

  • 2004
  • D
Výsledek výzkumu

Buzení rotací sil

Excitation by rotation of forces has been designed as addition to sweept sine excitation and phase resonance method used during ground vibration tests of aircraft structures. The method is based on a multipoint excitati...

JU - Aeronautika, aerodynamika, letadla

  • 2004
  • D
Výsledek výzkumu

Impulse bladed wheel excitation system with an increased excitation force

The invention relates to the bladed wheel excitation system with an increased excitation force for electromagnetic excitation of blade vibration of bladed wheels under rotation. The system is characterized by an in...

Applied mechanics

  • 2017
  • P
  • Odkaz
Výsledek výzkumu

Exciting elektromagnet for rotating parts machines

The maximum attainable force by an electromagnetic excitation of rotating. The frequency of the exciting force and magnetic circuit arrangement of the exciting electromagnet can affect the portative fo...

BI - Akustika a kmity

  • 2008
  • Gprot
Výsledek výzkumu

Software for calculation optimization of more point excitation during Ground Vibration Test

Calculation of all combination of force vectors from candidate points from one to choose force point number. Result evaluation according to proposed criterion function. Excitation vector contains exciters location ...

JU - Aeronautika, aerodynamika, letadla

  • 2009
  • R
Výsledek výzkumu

Study of additional parametric excitation on reduction of forced resonance vibrations

by means of parametric excitation fulfilling certain conditions. It is studied on the case of 2DOF system with additional parametric excitation under harmonic force excitation. On the contrary to the selfexcited v...

BI - Akustika a kmity

  • 2014
  • D
Výsledek výzkumu

Prototype series of dynamic exciter with a streamlined force

Design and manufacturing of prototype series of dynamic exciters with a streamlined force for exciting the steam turbines foundations of various sizes for the purpose of experimental identification of dynamic properties of ...

JS - Řízení spolehlivosti a kvality, zkušebnictví

  • 2015
  • Gfunk
Výsledek výzkumu

Exciting electromagnet with a magnetic bias

The maximum attainable force by of an electromagnetic excitation of rotating current. The exciting force is proportional to the square of the sum of alternating and direct induction components. The resulting ex...

BM - Fyzika pevných látek a magnetismus

  • 2009
  • Gprot
Výsledek výzkumu

Impulse Exciter of Rotating Blades With an Increased Excitation Force

This paper deals with electromagnetic vibration excitation of rotating machine blades in a purpose of dynamic measurement and testing. A novel method for increasing the excitation force is presented. At the same time, the s...

Applied mechanics

  • 2019
  • Jimp
  • Odkaz
Výsledek výzkumu

Electro-hydraulic Vibration Exciter for Dynamic Tests of Bridges

, such as bridges or foundation slabs. The characteristic amplitude of harmonic force for 1Hz frequency is about 5 kN. The vibration exciter can be used for the loading by a random history force, harmonic excitation

JM - Inženýrské stavitelství

  • 2003
  • A
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