Dynamic Response of Packets of Blades by The Finite Element Method

1978 ◽  
Vol 100 (4) ◽  
pp. 660-666 ◽  
Author(s):  
A. L. Salama ◽  
M. Petyt
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Response ◽  
Harmonic Excitation ◽  
Mass Ratio ◽  
The Finite Element Method ◽  
Periodic Loading ◽  
Engine Order ◽  
Partial Admission ◽  
Element Method

The finite element method is used to study the free vibration of packets of blades. A packet of six shrouded blades is analyzed, only the tangential vibrations being considered. Results are obtained to establish the effect of certain parameters such as stiffness ratio, mass ratio, the number of blades in the packet, the effect of rotation and the position of the lacing wires. The dynamic response of a packet to periodic loading is also studied. The cases of engine order harmonic excitation and partial admission of gas are considered with reference to a packet of six shrouded blades.

Transient Dynamic Response of Arbitrary Stiffened Shells by the Finite Element Method

1995 ◽  
Vol 117 (1) ◽  
pp. 11-16 ◽  
Author(s):  
G. Sinha ◽  
M. Mukhopadhyay
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Response ◽  
Bridge Engineering ◽  
Stiffened Plates ◽  
The Finite Element Method ◽  
Stiffened Shells ◽  
Triangular Shell Element ◽  
Plates And Shells ◽  
Element Method

Stiffened plates and shells often find wide application in bridge engineering, aircraft, ship and allied industries owing to its high strength to weight ratios. They are often subjected to dynamic loading such as air blast loading, for which detailed dynamic analysis is required to study the structure under these conditions. In the present approach, the dynamic response of stiffened plates and shells has been investigated by the finite element method employing a high precision arbitrary-shaped triangular shell element in which stiffeners may lie in any arbitrary direction within the element. This provides greater flexibility in the mesh generation. The governing undamped equations of motion have been solved by Newmark’s method for direct time integration. The dynamic response of plates and shells with or without stiffeners, subjected to different kinds of load-history have been studied and results are compared with the published analytical results.

Characteristics Research of Aqueduct under FSI Dynamic Response

2013 ◽  
Vol 864-867 ◽  
pp. 2367-2370
Author(s):  
Feng Zhu ◽  
Ai Wu Cao ◽  
Geng Ying
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Response ◽  
Pressure Distribution ◽  
Hydrodynamic Pressure ◽  
The Finite Element Method ◽  
Height Range ◽  
The Difference ◽  
Pressure Changes ◽  
Element Method

Maximum distribution of hydrodynamic pressure on the flume sidewall were studied in this paper based on the finite element method. It contains the difference comparison of theoretical and numerical formulas, rules of maximum hydrodynamic pressure distribution under regular and irregular incentives, and hydrodynamic pressure changes with different height of bracket below the aqueduct. Studies show that: In the 30m height range, with the rise of bracket, the hydrodynamic pressure grows linearly.

Analysis of Timber-Concrete Ceiling Structure in Multi-Storey Building

2014 ◽  
Vol 969 ◽  
pp. 51-54
Author(s):  
Oldrich Sucharda ◽  
David Mikolášek ◽  
Jiri Brozovsky
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Analysis ◽  
Dynamic Effect ◽  
Harmonic Excitation ◽  
Maximum Response ◽  
The Finite Element Method ◽  
Storey Building ◽  
Element Method ◽  
Concrete Ceiling

The paper deals with a numerical analysis of timber-concrete ceiling. The finite element method is used for the analysis. The calculation takes into account a dynamic effect of load. The structure creates the ceiling of the gymnasium. The goal of the paper is a study of ceiling eigenfrequencies and a maximum response to a harmonic excitation.

Sign in / Sign up

Export Citation Format

Share Document