3 edition of On the accuracy of modelling the dynamics of large space structures found in the catalog.
On the accuracy of modelling the dynamics of large space structures
by Howard University, School of Engineering, Dept. of Mechanical Engineering, [National Aeronautics and Space Administration in Washington, D.C
Written in English
|Statement||by Cheick Modibo Diarra and Peter M. Bainum.|
|Series||NASA contractor report -- NASA CR-175987.|
|Contributions||Bainum, Peter M., United States. National Aeronautics and Space Administration.|
|The Physical Object|
Chaos theory is a branch of mathematics focusing on the study of chaos—states of dynamical systems whose apparently-random states of disorder and irregularities are often governed by deterministic laws that are highly sensitive to initial conditions. Chaos theory is an interdisciplinary theory stating that, within the apparent randomness of chaotic complex systems, there are underlying. Linear State-Space Model with Time-Varying Dynamics Jaakko Luttinen, Tapani Raiko, and Alexander Ilin Aalto University, Finland Abstract. This paper introduces a linear state-space model with time-varying dynamics. The time dependency is obtained by forming the state dynamics matrix as a time-varying linear combination of a set of ma-trices.
Title: A Unified Approach to Accurate and Efficient Modeling of Composite Beams and Plates Keynote Lecture: Dynamics, Vibration and Control Track International Mechanical Engineering Congress and Exposition Phoenix, Arizona, Nov. 13 – 16, Abstract: Development of a unified approach is described for accurate and efficient modeling of a variety of structures for addressing aeroelasticity. The book conclusively solves problems associated with the control and estimation of nonlinear and chaotic dynamics in ﬁnancial systems when these are described in the form of nonlinear ordinary diﬀerential equations. It then addresses problems associated with the control and estimation of ﬁnancial.
solid and fluid mechanics, electronics, dynamics and thermodynamics. Nu-merical analysis is a technique used by engineers to solve differential equa-tions which best describe the physical models. Finite element method (FEM) is an example of a numerical technique that is . National Aeronautics and Space Administration. I. Title. TLM6C48 ’dc22 Note the large nose-down delection of the canard surface, an indication of the inherent An additional design issue is the required accuracy of model lines and deciding which airplane features need to be replicated for the model. The results of static.
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Get this from a library. On the accuracy of modelling the dynamics of large space structures. [Cheick Modibo Diarra; Peter M Bainum; United States. National Aeronautics and Space Administration.]. Recently new space missions which require large-scale, light weight space based structural systems have been proposed.
Because of the inherent size of these structures, system dynamic performance must be accurately predicted prior to launch and assembly, usually by mathematical modelling and by: 3. Part of the Springer Series in Computational Mechanics book series Continuum Modeling of Large Lattice Structures: Status and Projections.
The last ten years have witnessed a fairly brisk research activity in the dynamics and control oflarge space structures in orderto establish a technology base forthe development of advanced. Recently new space missions which require large-scale, light weight space based structural systems have been proposed.
Because of the inherent size of these structures, system dynamic performance must be accurately predicted prior to launch and assembly, usually by mathematical modelling and simulation. Santini has developed a mathematical formulation for predicting the motion of a general Cited by: 3.
On the accuracy of modelling the dynamics of large space structures: NTRS Full-Text: View Document [PDF Size: KB]: Author and Affiliation:Cited by: 3. Dynamics and control of large space structures. Lattice-based Discrete Structure Modeling and Control for Large Flexible Space Structure Applications.
Nick B. Cramer, Space Structures: Issues in Dynamics and Control. Journal of Aerospace Engineering, Vol. 3, No. Structural dynamic models of large complex systems often involve coupling substructure models that most likely were developed by other individuals.
Therefore, it is prudent to perform sanity checks to establish the mathematical consistency of the models before incurring the expense of developing the system models and computing responses. Large Space Structures by Ralph J. Dornsife requirements, structural modeling and analysis, passive damping and active control system design, ground-based testing, payload integration, on-orbit Research in ground-based testing dynamics of structural models.
'"he behavior of a prismatic. The deployment accuracy of deployable structures is affected by temperature and flexibility. To obtain the higher accuracy, various measures such as the optimization design and the control process are employed, and they are all based on deployment dynamics characteristics of deployable structures.
So a precise coupled thermo-structural deployment dynamics analysis is important and necessary. American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA Modeling and interpreting mesoscale network dynamics.
NeuroImage. 15 ottobre ;– View Article Google Scholar O’Neill GC, Tewarie P, Vidaurre D, Liuzzi L, Woolrich MW, Brookes MJ. Dynamics of large-scale electrophysiological networks: A technical review.
NeuroImage. 15 ;(Pt B)– Finally, it is demonstrated that the time history analysis of space structures is optimally accomplished by lesser computational time and high accuracy of responses, particularly in the large-scaled systems for broad-frequency content loadings. The immediacy of the U.S.
space station makes the particular emphasis placed on large space structures and their control appropriate. The space station is but one part of the space program, and includes the lunar base, which the space station is to service. Dear Colleagues, The Guest Editors are inviting submissions for a Special Issue of Energies on the subject area of "Modelling of Aerospace Vehicle Dynamics".
This Special Issue aims to contribute to the study of propulsion systems for modern aerospace vehicles with the obvious aim of improving them, endowing them with the ability to move much faster and more easily in any direction, for a very.
Many current and future on-orbit space operations involve physical interaction with dynamic free-floating targets. Examples include the capture and servicing of satellites, the capture and disposal of space debris, and the assembly and maintenance of large space structures2,14, For these missions, it is critical to have accurate knowledge of.
Large space structures. Berlin ; New York: Springer-Verlag, © (OCoLC) Online version: Large space structures. Berlin ; New York: Springer-Verlag, © (OCoLC) Document Type: Book: All Authors / Contributors: Satya N Atluri; Anthony K Amos.
In this paper, a review of past and recent developments in the dynamics of flexible multibody systems is presented. The objective is to review some of the basic approaches used in the computer aided kinematic and dynamic analysis of flexible mechanical systems, and to identify future directions in this research area.
Among the formulations reviewed in this paper are the floating frame of. The accuracy of the structures generated by homology modeling is highly dependent on the sequence identity between target and template. Above 50% sequence identity, models tend to be reliable, with only minor errors in side chain packing and rotameric state, and an overall RMSD between the modeled and the experimental structure falling around 1.
The author also discusses the use of discrete and continuous models and presents a general modeling theory for structured population dynamics.
Cushing begins with an obvious point: individuals in biological populations differ with regard to their physical and behavioral characteristics and therefore in the way they interact with their environment.
Energy integral method model for the nonlinear dynamics of an axisymmetric thin liquid film falling on a vertical cylinder. Physics of Fluids, Vol. 21, Issue. 6, p. Physics of. About the Contributors Author. Hiroki Sayama,is an Associate Professor in the Department of Systems Science and Industrial Engineering, and the Director of the Center for Collective Dynamics of Complex Systems (CoCo), at Binghamton University, State University of New received his BSc, MSc and DSc in Information Science, all from the University of Tokyo, Japan.Research on modeling limit order book dynamics can generally be grouped into two main categories: statistical modeling and machine learning based methods.
In the former approach, statistical properties of the limit order book for the target - nancial asset are developed and conditional quantities are then derived and mod-eled [8,10,20,33,35]. This makes LES inherently more computationally expensive than RANS models.
In free shear flows, the turbulent scales are quite large so LES is suitable, however one of the most prohibitive limitations of LES is that within a turbulent boundary layer, the turbulent structures are quite small – and need to be resolved in both space and time.