Control of dynamic response of a continuum model of a large space structure

1985 ◽  
Author(s):  
S. ATLURI
Keyword(s):  
Dynamic Response ◽  
Continuum Model ◽  
Space Structure ◽  
Large Space ◽  
Large Space Structure

Dynamic Response of a Damped Large Space Structure: A New Fractional-Spectral Approach

1995 ◽  
Vol 10 (2) ◽  
pp. 113-120 ◽  
Author(s):  
A.M. Horr ◽  
L. C. Schmidt
Keyword(s):  
Finite Element Analysis ◽  
Dynamic Response ◽  
Space Structure ◽  
Spectral Approach ◽  
Structural Damping ◽  
Large Space ◽  
Element Analysis ◽  
Damping Characteristics ◽  
Large Space Structure ◽  
Linear Damping

Passive and active damping in a large space structure (LSS) is important in terms of performance under a dynamic load. Structural damping mostly arises as the result of many energy dissipation mechanisms acting in a system. The purpose of this paper is to present the spectrally formulated finite element analysis for vicsoelastically damped LSS. Using a fractional derivative model, the non-linear damping characteristics of a viscoelastic material have been modelled. The proposed method is then been extended to derive the dynamic response of a large truss structure using a computer program.

Integrated Controls-Structures Optimization of a Large Space Structure

1990 ◽  
Author(s):  
SHARON PADULA ◽  
JOANNE WALSH ◽  
CHRIS SANDRIDGE ◽  
RAPHAEL HAFTKA
Keyword(s):  
Space Structure ◽  
Large Space ◽  
Large Space Structure

Empirical Formula Considering the Smoke Ventilation for Air Temperature in Large Space Structure under Fire

2011 ◽  
Vol 94-96 ◽  
pp. 587-593 ◽  
Author(s):  
Jin Liang ◽  
Su Duo Xue ◽  
Xiong Yan Li
Keyword(s):  
Air Temperature ◽  
Empirical Formula ◽  
Steel Structures ◽  
Space Structure ◽  
Space Structures ◽  
Large Space ◽  
Fire Temperature ◽  
Large Space Structure ◽  
Fire Smoke ◽  
Resistance Performance

Abstract.The fire smoke is one of the most important factors for the fire temperature field. Once the fire smoke has been exhausted effectively, the fire temperature will be reduced and the fire-resistance performance of steel structures may be improved as well. However, the research on the fire temperature in the space structures is almost bold, which could lead to the theoretical analysis result on fire temperature is quite different from the real condition. Accordingly, the air temperature condition on fire for large-space structures has been analyzed. Taken into account smoke ventilation, the empirical formula for air temperature in large space structure under fire has been modified.

Membrane Modular Structures With Inflatable Tubes and Connective Cables for Future Space Applications

2009 ◽  
Author(s):  
Nobuhisa Katsumata ◽  
Ryoko Fujii ◽  
M. C. Natori ◽  
Hiroshi Yamakawa
Keyword(s):  
Conceptual Models ◽  
Space Structure ◽  
Modular Structure ◽  
Membrane Structures ◽  
Large Space ◽  
Space Applications ◽  
Cable Networks ◽  
Large Space Structure ◽  
Future Space ◽  
Modular Structures

Spirally folded hexagonal membrane structures with inflatable tubes and connective cable networks are presented aiming to establish possible construction scenarios of future large space structure systems over hundreds meters scale and corresponding structures based on the hierarchical modular structure concept using deployable membrane modules. Laboratory scale hand-made conceptual models are manufactured, and their deployment experiments are carried out to show their applicability to the hierarchical modular structures systems.

scholarly journals Mathematical modeling of transformable space structure dynamics

2019 ◽  
Vol 221 ◽  
pp. 01018 ◽  
Author(s):  
Vladimir Zimin ◽  
Alexey Krylov ◽  
Sergey Churilin ◽  
Zikun Zhang
Keyword(s):  
Strain State ◽  
Element Model ◽  
Space Structure ◽  
Space Structures ◽  
Elastic Rod ◽  
Stress Strain ◽  
Large Space ◽  
Structure Dynamics ◽  
Stress Strain State ◽  
Large Space Structure

Today large space structures are in focus of attention of engineers and designers of rocket and space equipment. In ground-based experiments, it is not always possible to carry out complex tests of large space structure functionality. Therefore, the development of mathematical models describing properly the transformable structure dynamics when they opened from the densely packed transport state to the operating position in the orbit becomes very important. To determine the stress-strain state of the frame elements when it is unfolding the shape of the framework is taken at the moments when relative velocities of the adjacent sections are maximal. Supposed, that at these moments the frame elements are getting on the stops limiting their relative angular displacements, and the structure behaves as an elastic rod with specified characteristics. Numerical analysis of the stress-strain state in the framework is carried out by means of a finite element model. Therefore, the represented mathematical model can be effectively used to predict the functional suitability of such transformable space structures already on the early stages of their development.

Research on Fire Resistance Performance of Pre-Stressed Suspended Steel Reticulated Shell

2010 ◽  
Vol 163-167 ◽  
pp. 790-794
Author(s):  
Feng Bo Yu ◽  
Xin Tang Wang ◽  
Ming Zhou ◽  
Wan Zhen Wang
Keyword(s):  
High Temperature ◽  
Fire Resistance ◽  
Steel Structure ◽  
Steel Structures ◽  
Space Structure ◽  
International Standards ◽  
Large Space ◽  
Finite Element Software ◽  
Large Space Structure ◽  
Fire Scene

Pre-stressed steel structures with large space are widely used in stadium, exhibition hall, theater and other buildings today. In order to study the fire-resistance behavior of suspended steel lattice shell of a stadium, the method of performance-based fire resistance design is used. First of all, the stadium physical model is established and the software FDS is used to determine the heating curves of the measuring points of the large space structure for two fire scenes. Compared with international standards heating curve, the heating curves of the large space structure obtained here has characteristic of local high-temperature. The finite element software MSC.MARC is further used to simulate the fire behavior of the pre-stressed steel structure with large space, in which the fire scene with 10MW design power of fire source and 30 minutes duration of fire are considered and two loading ways that overall non-uniform temperature field loading and the local high temperature components loading are accepted. The results show that the pre-stressed steel structure with large space has good fire resistance behavior, and the overall failure will not take place for the fire scene suggested here during 30 minutes duration of fire.

A Switching Scheme for Mixed PZT-Based/Jet Thrusters Control of a Large Flexible Structure

2000 ◽  
Vol 123 (4) ◽  
pp. 722-727 ◽  
Author(s):  
A. Ferrara, ◽  
L. Magnani, and ◽  
R. Scattolini
Keyword(s):  
Energy Consumption ◽  
Control Strategy ◽  
Vibration Suppression ◽  
Space Structure ◽  
Flexible Structure ◽  
Control Performance ◽  
Switching Scheme ◽  
Large Space ◽  
Large Space Structure ◽  
Reduce Energy Consumption

Vibration suppression of a large space structure is achieved by switching between different actuators in order to optimize control performance and to reduce energy consumption. The theoretical properties of the proposed control strategy are reported together with some experimental results.

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