Dynamic continuum modeling of beamlike space structures using finite-element matrices

AIAA Journal ◽  
1990 ◽  
Vol 28 (4) ◽  
pp. 725-731 ◽  
Author(s):  
Usik Lee
Keyword(s):  
Finite Element ◽  
Space Structures ◽  
Continuum Modeling

Slew Maneuver of Flexible Space Structures Using Time Finite Element Analysis

AIAA Journal ◽  
10.2514/2.289 ◽  
1998 ◽  
Vol 36 (10) ◽  
pp. 1938-1940 ◽  
Author(s):  
Jinyoung Suk ◽  
Youdan Kim
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Space Structures ◽  
Element Analysis ◽  
Flexible Space Structures

Imperfection Sensitivity Analysis of Double Domes Free Form Space Structures

2015 ◽  
Vol 15 (04) ◽  
pp. 1450067 ◽  
Author(s):  
Mehdi Abbasi Mousavi ◽  
Karim Abedi ◽  
Mohamadreza Chenaghlou
Keyword(s):  
Finite Element ◽  
Limit Equilibrium ◽  
Single Layer ◽  
Initial Imperfection ◽  
Free Form ◽  
Space Structures ◽  
Equilibrium Path ◽  
Imperfection Sensitivity ◽  
Step Method ◽  
Buckling Modes

This paper investigates the effects of applying different buckling modes obtained by linearized eigenvalue buckling analysis as the initial imperfection for double domes free form space structures. Nonlinear elastic–plastic analysis of rigidly jointed single layer double domes are carried out using the finite element method. Having verified the finite element modeling, several different collapse analyses have been undertaken in order to examine the stability behavior of these structures. By using the approximate-perturbed method, the results of the analyses show that in free form double domes, the lowest buckling modes could not be considered as the effective modes to change the bifurcation equilibrium path into the limit equilibrium one. Therefore, the generalized conformable imperfection mode method has been suggested in the present study in order to apply geometric imperfections in free form double domes. Also, one step method has been suggested in order to eliminate 60% of buckling modes, which are nonsensitive, before applying the approximate-perturbed method.

Finite element continuum modeling of vibrationally-fluidized granular flows

2015 ◽  
Vol 129 ◽  
pp. 91-105 ◽  
Author(s):  
Kamyar Hashemnia ◽  
Jan K. Spelt
Keyword(s):  
Finite Element ◽  
Granular Flows ◽  
Continuum Modeling

Frequency Domain Dynamic Analysis of Large Space Structures with Added Elastomeric Dampers

1996 ◽  
Vol 11 (3) ◽  
pp. 279-289 ◽  
Author(s):  
A.M. Horr ◽  
L.C. Schmidt
Keyword(s):  
Finite Element ◽  
Vibrational Energy ◽  
Space Structures ◽  
Computational Techniques ◽  
Large Space ◽  
Stiffness Analysis ◽  
Modern Computer ◽  
Large Space Structures ◽  
Elastomeric Dampers ◽  
Computer Based

Modern computer-based computational techniques such as the finite element method enable the structural dynamicist to make precise calculations of the mass and stiffness properties of complex large space structures (LSS). To obtain dissipation analysis up to the same level of sophisitcation as mass and stiffness analysis in damped structures, an equally accurate methodology is required. This paper presents one such methodology for LSS with added elastomeric dampers. Elastomeric dampers have been used in the different parts of LSS to absorb part of the vibrational energy, and to help reduce the damage caused by the dynamic forces. The purpose of this paper is to present the specturally formulated finite element analyses for damped LSS. Using the fractional derivative model, the non-linear damping characteristics of elastomeric dampers have been modelled.

Finite Element Transient Dynamic Analysis of Laminated Composite Plates

2015 ◽  
Vol 732 ◽  
pp. 357-364 ◽  
Author(s):  
Milan Žmindák ◽  
Josef Soukup ◽  
Lenka Rychlíková ◽  
Jan Skočilas
Keyword(s):  
Finite Element ◽  
Energy Savings ◽  
Laminated Composite ◽  
Composite Plates ◽  
Unidirectional Composite ◽  
Material Point ◽  
Point Of View ◽  
Space Structures ◽  
The Finite Element Method ◽  
Transient Dynamic Analysis

In recent years, the requirements on the plane and space structures have been growing. The essential aim is to minimize weight and increase the strength and carrying capacity of these structures. One of the possible solutions is application of the layered structure composed from the composite materials. These materials represent the most effective utilization of potential possibilities of mass and energy savings not only from material point of view, but also with respect to structure usage. The article presents the Finite element method (FEM) solution of the displacement, velocity and acceleration distributions in the composite plates. The plate is unidirectional composite consisting of carbon fibers embedded in the epoxy matrix. FEM software ANSYS 11.0 has been used for analysis.

Stiffness Characteristics of Membrane Space Structures Supported by Booms

2012 ◽  
Author(s):  
H. Tamaru ◽  
T. Akita ◽  
M. C. Natori ◽  
H. Yamakawa
Keyword(s):  
Finite Element ◽  
Parametric Study ◽  
Vibration Characteristics ◽  
Space Structures ◽  
Finite Element Code ◽  
Membrane Structures ◽  
Square Planar ◽  
Applied Tension ◽  
Planar Membrane ◽  
Stiffness Characteristics

A systematic parametric study on the stiffness characteristics of compound space structures consisted of membranes and booms is presented. Using a tension field finite element code including membrane wrinkle effects, basic vibration characteristics of a square planar membrane structures are shown, and the effects of various conditions of applied tension between membrane and boom elements are discussed.

scholarly journals Finite element analysis of deployable space structures

2014 ◽  
Vol 11 (6) ◽  
pp. 42-47
Author(s):  
D. R Borse ◽  
◽  
S. H Upadhyay ◽  
Kripa Shanker Singh
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Space Structures ◽  
Element Analysis

Slew maneuver of flexible space structures using time finite element analysis

AIAA Journal ◽  
1998 ◽  
Vol 36 ◽  
pp. 1938-1940
Author(s):  
Jinyoung Suk ◽  
Youdan Kim
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Space Structures ◽  
Element Analysis ◽  
Flexible Space Structures
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