Dynamics of rotationally periodic structures

Author: zoeh

August undefined, 2024

WebThe status and some recent developments of continuum modeling for large repetitive lattice structures are summarized. Discussion focuses on a number of aspects including definition of an effective substitute continuum; characterization of the continuum model; and the different approaches for the generation of the properties of the continuum, namely, … WebDynamics of rotationally periodic large space structure The analysis of large area rotationally periodic space structures presented in the paper combines the finite …

Vibration and Wave Propagation Control of Plates with Periodic …

WebJan 1, 2011 · Dynamics of rotationally periodic structures. Article. Jan 1979; INT J NUMER METH ENG; D. L. Thomas; The paper considers the finite element analysis of … WebJun 1, 2007 · Rotationally periodic structures are used in many engineering applications such as turbine bladed disks or gear wheels. It is well known that the dynamics of such … incheiere contract munca

Dynamics of rotationally periodic large space structures

WebThe dynamic analysis of large area space structures is restricted by cost and utter size of the computer analysis. An efficient analysis must take advantage of construction periodicity inherent in many structures. In the analysis described here a finite element transfer matrix method is employed to eliminate internal degrees of freedom from the basic unit of a … WebThis research will focus on nonlinear vibrations and wave propagation to enable the development of new multi-functional metamaterial devices. The novel self-adaptive metamaterials use a sliding mass mechanism to tune the bandgap to different frequency ranges. This self-adaptive mechanism will be integrated in periodic and quasiperiodic ... WebMay 17, 2012 · Survey on Equivalent Continuum Modeling for Truss Structures and Their Nonlinear Dynamics and Vibration Control 22 October 2024 Journal of Vibration … incheiere contract inchiriere

Structural Dynamic Analysis of Cyclic Symmetric Structures

Current Research Projects - Linear and Nonlinear Dynamics and ...

WebDYNAMICS OF ROTATIONALLY PER1OL)IC STRUCTURES 83 analysis of the structure, provided it is linearly elastic. Furthermore it is not confined to vibration, but can be used … WebAug 7, 2024 · In a previous study, we proposed a method for the damping of rotationally periodic structures, when a specific mode with n nodal diameters is targeted. The proposed method considers 4n lead zirconate titanate patches (or a multiple of) which can be, either, shunted independently on 4n identical resistor–inductor circuits, or mounted in … inappropriate things people say about griefWebJan 1, 1987 · To obtain the natural frequencies of rotationally periodic structures, a simple block solver is developed. Complex arithmetic is used to reduce the analysis region to a repeating substructure; characteristic matrices are considered to be cyclic in nature (S. Michimura et al., Bull. Jap. Soc. Mech. Engrs24,1968–1993, 1981).Most of the … inappropriate things in harry potter

"WebMay 1, 2011 · The model was extended to investigate the collective dynamics of periodic nonlinear two-dimensional arrays, and two applications have been considered: (i) a 2D … " - Dynamics of rotationally periodic structures

Dynamics of rotationally periodic structures

Topological design of modular structures under arbitrary loading

WebMay 1, 2011 · The model was extended to investigate the collective dynamics of periodic nonlinear two-dimensional arrays, and two applications have been considered: (i) a 2D array of coupled pendulums under ... WebOct 3, 2011 · The proposed method of analysis is based on the general theory of spatially periodic structures. The main feature of this theory is the possibility to apply Discrete Fourier Transform (DFT) in order to reduce a large system of q (2 N + 1) linear stiffness equilibrium equations to a set of 2 N + 1 uncoupled systems of q equations each.

Did you know?

WebApr 19, 2001 · The forced vibration of a rotationally periodic structure when subjected to travelling wave excitation is discussed, with emphasis placed on the steady-state response of doublet modes having either repeated or split frequencies. Such vibration modes have spatially modulated shapes defined by (1) the number of nodal diameters … WebMay 2, 2014 · Prime examples of rotationally periodic structures are bladed disks in turbomachinery, where several characteristic dynamic properties of periodic structures …

WebSep 16, 2015 · Ring periodic structures are widely spread in engineering applications, where natural frequencies can split due to the deviation from axisymmetry. ... 2 Tianjin Key Laboratory of Nonlinear Dynamics and Chaos Control, Tianjin, P. R. China. ... Spatial modulation of repeated vibration modes in rotationally periodic structures. WebMar 16, 2009 · Tang, J. and Wang, K.W. 1999a ``Vibration Control of Rotationally Periodic Structures using Passive Piezoelectric Shunt Networks and Active Compensation, '' Journal of Vibration and Acoustics, Transactions of the ASME, 121(3) ... Dynamics of periodic spring-mass chain coupled with an electric transm... Go to citation Crossref Google Scholar.

WebJun 1, 2007 · Rotationally periodic structures are used in many engineering applications such as turbine bladed disks or gear wheels. It is well known that the dynamics of such structures can be studied using the cyclic symmetry reduction. This method makes it possible to analyse the complete cyclic structure by considering a single elementary … WebJun 1, 1986 · Dynamics of rotationally periodic structures. Internat. J. Numer. Meths. Engrg. (1979) D.J. Mead Wave propagation and natural modes in periodic systems. J. Sound Vibration (1975) View more references. Cited by (71) Anisotropic yield models for lattice unit cell structures exploiting orthotropic symmetry.

WebDynamics of rotationally periodic large space structures. The dynamic analysis of large area space structures is restricted by cost and utter size of the computer analysis. …

WebApr 1, 2009 · Thomas DL (1979) Dynamics of rotationally periodic structures. Int J Numer Methods Eng 14:81–102. Article MATH Google Scholar Tiersten HF (1994) Equation for the control of the flexural vibrations of composite plates by partially electroded piezoelectric actuators. In: Smart structures and materials, smart structures and … incheiere contract telekomWebThe free and forced motions of a nonlinear periodic structure with cyclic symmetry are studied. The structure consists of a number of identical linear flexural members coupled … incheiere sedintaWebJul 1, 2007 · Periodic forced response of structures having three-dimensional frictional constraints. Journal of Sound and Vibration, 229 (4) (2000), pp. 775-792. ... Dynamics of rotationally periodic structures. International Journal for Numerical Methods in Engineering, 14 (1979), pp. 81-102. inappropriate things in kids showsWebApr 18, 2005 · Dynamics of rotationally periodic structures. Article. Jan 1979; INT J NUMER METH ENG; D. L. Thomas; The paper considers the finite element analysis of the free, undamped and the forced damped ... inappropriate therapy vision lossWebI. Romanescu's 12 research works with 353 citations and 4,379 reads, including: Passive Damping of Rotationally Periodic Structures with Tuned Piezoelectric Inductive Shunt inchelinWebThe method has been implemented in a computer program and is illustrated by analyses of an alternator end winding, a cooling tower with legs, and a wheel of turbine blades. For forced vibration, it is shown that any arbitrary oscillatory force can be decomposed into … incheiere email formalWebFeb 8, 1980 · Space structures can be described in most cases as two dimensional periodic or rotationally periodic structures. Due to the extremely large number of … incheiere export