Free Vibrations of Structural Hyperbolic Paraboloid Networks

2002 ◽  
pp. 179-184
Author(s):  
Andrew Mioduchowski ◽  
Meiping Wang
Keyword(s):  
Free Vibrations ◽  
Hyperbolic Paraboloid

scholarly journals Estimation of the composition of the forced and free vibrations of the casing of the steel rope roof of Ukraine Cinema & Concert Hall located in Kharkov over the area of main line tunnel of working metropolitan railway

2018 ◽  
Vol 230 ◽  
pp. 02030
Author(s):  
Valeriy Shmukler ◽  
Valeriy Zhylyakov ◽  
Oleksandr Shapovalov
Keyword(s):  
Free Vibrations ◽  
Forced Vibrations ◽  
Building Construction ◽  
Vibration Parameter ◽  
Operating Characteristics ◽  
Natural Vibrations ◽  
Dynamic Impact ◽  
Hyperbolic Paraboloid ◽  
Concert Hall ◽  
Made In

The paper discusses issues related to the dynamic parameters of the metro train influence on the building construction of Ukraine Cinema & Concert Hall complicated in terms of construction located in Kharkiv City. The hall roof is of peculiar complexity made in the shape of hyperbolic paraboloid hung to the cable roof system and supported by the inclining reinforced concrete arches. Using the equipment by DIAMEX 2000 LLC we have measured vertical and horizontal forced vibrations in the most relevant points of the casing. Natural vibrations were defined by creating dynamic impact of the falling load weighing 10 kg from a height og 2 m. The vibration parameter measurement was carried out by means of Ahat-M vibration analyzer. As a result we have obtained amplitude-frequency characteristics of the forced vibrations caused by metro train movements. The frequency of base and obertones is within 30-50 Hz. At the same time, vibration amplitudes is up 200-350 pm. Specific range of vibrations leads to the occurrence of the for framing roof framing (concrete and steel strand guy ropes), noise penetrating into the hall significantly worsens operating characteristics for the spectators. A special calculation of guy rope element taking into account fatigue factors has been made.

TEST OF A PRESTRESSED CONCRETE HYPERBOLIC PARABOLOID SHELL

PCI Journal ◽  
1958 ◽  
Vol 3 (1) ◽  
pp. 70-78
Author(s):  
T. Y. Lin ◽  
R. Itaya
Keyword(s):  
Prestressed Concrete ◽  
Hyperbolic Paraboloid

Numerical analysis of free vibrations of rectangular plates based on different approaches

2019 ◽  
pp. 33-41
Author(s):  
Oleksandr Grigorenko ◽  
◽  
Maksym Borysenko ◽  
Olena Boychuk ◽  
Volodymyr Novytskyi ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Free Vibrations ◽  
Rectangular Plates

Free vibrations of orthotropic shells of revolution with variable parameters

1978 ◽  
Vol 14 (8) ◽  
pp. 820-825
Author(s):  
E. I. Bespalova ◽  
Ya. M. Grigorenko ◽  
A. B. Kitaigorodskii ◽  
A. I. Shinkar'
Keyword(s):  
Free Vibrations ◽  
Shells Of Revolution ◽  
Variable Parameters ◽  
Orthotropic Shells

Measurement of Young’s Modulus and Shear Modulus of Some Structures Welded Using Flux Cored Wire by Vibration Tests

2014 ◽  
Vol 216 ◽  
pp. 151-156 ◽  
Author(s):  
Liviu Bereteu ◽  
Mircea Vodǎ ◽  
Gheorghe Drăgănescu
Keyword(s):  
Shear Modulus ◽  
Arc Welding ◽  
Natural Frequencies ◽  
Free Vibrations ◽  
Vibration Modes ◽  
Cored Wire ◽  
Flux Cored Arc Welding ◽  
Longitudinal Elastic Modulus ◽  
Vibration Tests ◽  
Non Destructive

The aim of this work was to determine by vibration tests the longitudinal elastic modulus and shear modulus of welded joints by flux cored arc welding. These two material properties are characteristic elastic constants of tensile stress respectively torsion stress and can be determined by several non-destructive methods. One of the latest non-destructive experimental techniques in this field is based on the analysis of the vibratory signal response from the welded sample. An algorithm based on Pronys series method is used for processing the acquired signal due to sample response of free vibrations. By the means of Finite Element Method (FEM), the natural frequencies and modes shapes of the same specimen of carbon steel were determined. These results help to interpret experimental measurements and the vibration modes identification, and Youngs modulus and shear modulus determination.

Re-investigation of large-amplitude free vibrations of beams using finite elements

1990 ◽  
Vol 143 (2) ◽  
pp. 351-355 ◽  
Author(s):  
G. Singh ◽  
G. Venkateswara Rao ◽  
N.G.R. Iyengar
Keyword(s):  
Finite Elements ◽  
Large Amplitude ◽  
Free Vibrations

Free vibrations of hybrid cable networks with external dampers and pretensioned cross-ties

2021 ◽  
Vol 156 ◽  
pp. 107627
Author(s):  
Fangdian Di ◽  
Lin Chen ◽  
Limin Sun
Keyword(s):  
Free Vibrations ◽  
Cable Networks

scholarly journals Vibration of rotating circular cylindrical shells with distributed springs

2021 ◽  
Vol 37 ◽  
pp. 346-358
Author(s):  
Fuchun Yang ◽  
Xiaofeng Jiang ◽  
Fuxin Du
Keyword(s):  
Boundary Conditions ◽  
Galerkin Method ◽  
Shell Theory ◽  
Rotation Speed ◽  
Cylindrical Shells ◽  
Free Vibrations ◽  
Governing Equations ◽  
Natural Response ◽  
Circular Cylindrical Shells ◽  
The Galerkin Method

Abstract Free vibrations of rotating cylindrical shells with distributed springs were studied. Based on the Flügge shell theory, the governing equations of rotating cylindrical shells with distributed springs were derived under typical boundary conditions. Multicomponent modal functions were used to satisfy the distributed springs around the circumference. The natural responses were analyzed using the Galerkin method. The effects of parameters, rotation speed, stiffness, and ratios of thickness/radius and length/radius, on natural response were also examined.

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