Deployable Structures for Architectural Applications - A Short Review

2014 ◽  
Vol 658 ◽  
pp. 233-240 ◽  
Author(s):  
Ioan Doroftei ◽  
Ioan Alexandru Doroftei
Keyword(s):  
Short Review ◽  
Climate Factors ◽  
Structural System ◽  
Indoor Climate ◽  
Membrane Structures ◽  
Deployable Structures ◽  
Plate Structures ◽  
Tensegrity Structures ◽  
Geometric Morphology

Deployable structures can provide a change in the geometric morphology of the envelope by contributing to making it adaptable to changing external climate factors, in order to improve the indoor climate performance of the building. They have the ability to transform themselves from a small, closed or stowed configuration to a much larger, open or deployed configuration being also known as erectable, expandable, extendible, developable or unfurlable structures. According to their structural system, deployable structures can be devided in four main groups: spatial bar structures consisting of hinged bars, foldable plate structures consisting of hinged plates, strut-cable (tensegrity) structures and membrane structures. In this paper a short review only on two of these groups of deployable structures for arhitectural applications will be presented.

Structural Performance of the Tensioning Air Beam System and its Analytical Modeling

2013 ◽  
Vol 284-287 ◽  
pp. 1385-1389
Author(s):  
Ki Youl Baek ◽  
Dae Jin Kim
Keyword(s):  
Analytical Modeling ◽  
Structural Behavior ◽  
Structural Performance ◽  
Simple Analytical Model ◽  
Structural System ◽  
Membrane Structures ◽  
Load Bearing Capacity ◽  
Structural Test ◽  
Beam System ◽  
Effective System

A study on the structural performance of the tensioning air beam system (TABS) is presented. TABS consists of the air beam, steel frames and cable struts and is a hybrid structural system. This system has the advantage of reduced self-weight and is easy to construct while it can improve the load bearing capacity of membrane structures. It maximizes the structural capacities of individual elements, thus can be considered as a very effective system in both structural and economical aspects. In this study, a structural test was carried out to investigate the structural performance of TABS under different membrane pressure conditions. A simple analytical model was proposed to predict the structural behavior of TABS and its validity was evaluated by comparing its results with the test values.

Deployable Structures

2012 ◽  
Vol 83 ◽  
pp. 122-131 ◽  
Author(s):  
Andrea E. del Grosso ◽  
Paolo Basso
Keyword(s):  
Inverse Kinematics ◽  
Civil Engineering ◽  
Variable Geometry ◽  
Deployable Structures ◽  
Form Finding ◽  
Tensegrity Structures ◽  
Structural Types ◽  
Kinematic Behaviour ◽  
Pneumatic Structures

Deployable structures have been developed for many different applications from space to mechanical and civil engineering. In the paper the general concepts of deployable structures, combining static and kinematic behaviour are presented first, also discussing their relationships with adaptive and variable geometry structures. Reported applications to civil engineering and architecture are then reviewed and categorized. The characteristics of the following systems are summarized : 1. Pneumatic Structures. 2. Tensegrity Structures. 3. Scissor-like Structures. 4. Rigid Foldable Origami. 5. Mutually Supported Structures. The problems of form finding, direct and inverse kinematics, actuation and self-deployability for some of the most interesting among the above structural types are then discussed in the paper. Some examples involving rigid foldable origami and mutually supported structures are finally presented.

scholarly journals Tensile structures as the most advanced lightweight structures

2013 ◽  
Vol 11 (3) ◽  
pp. 269-284
Author(s):  
Vuk Milosevic ◽  
Tomislav Igic ◽  
Dragan Kostic
Keyword(s):  
Structural Material ◽  
Gaussian Curvature ◽  
Research Work ◽  
Structural Systems ◽  
Structural System ◽  
Membrane Structures ◽  
Structure System ◽  
Lightweight Structures ◽  
Negative Gaussian Curvature

Tensile structures are currently the most advanced lightweight structures. Apart from their very small self-weight, they are also characterized by a double curved form with a negative Gaussian curvature. In addition, this is one of the most recent structural systems to be designed and because of that a lot of research work is still being done on its improvement. This paper will give a brief overview of the development of tensile structures. Their most modern sub-type, membrane structures, was analyzed in more detail. The characteristics of this system, its loading and the structural material it is made of were also studied. Special attention is paid to the form of this structural system. In the end an overview of the most significant objects constructed using the tensile structure system is offered, including the Olympic stadium in Munich as an example of cable net subsystem, and the roof of the central court in Wimbledon and the stadium in Durban as representatives of the membrane subsystem. In addition to the significant advantages of this system, the drawbacks are also highlighted.

Mobility and Kinematic Analysis of Foldable Plate Structures Based on Rigid Origami

2016 ◽  
Vol 8 (6) ◽  
Author(s):  
Jianguo Cai ◽  
Zelun Qian ◽  
Chao Jiang ◽  
Jian Feng ◽  
Yixiang Xu
Keyword(s):  
Kinematic Analysis ◽  
Jacobian Matrix ◽  
Null Space ◽  
Building Structures ◽  
Rigid Plate ◽  
Deployable Structures ◽  
Plate Structures ◽  
Constraint Equations ◽  
New Type ◽  
System Constraint

As one new type of deployable structures, foldable plate structures based on origami are more and more widely used in aviation and building structures in recent years. The mobility and kinematic paths of foldable origami structures are studied in this paper. Different constraints including the rigid plate, spherical joints, and the boundary conditions of linkages were first used to generate the system constraint equations. Then, the degree-of-freedom (DOF) of the foldable plate structures was calculated from the dimension of null space of the Jacobian matrix, which is the derivative of the constraint equations with respect to time. Furthermore, the redundant constraints were found by using this method, and multiple kinematic paths existing in origami structures were studied by obtaining all the solutions of constraint equations. Different solutions represent different kinematic configurations. The DOF and kinematic paths of a Miura-ori and a rigid deployable antenna were also investigated in detail.

Mobility and Kinematic Paths of Foldable Origami Structures

2016 ◽  
Author(s):  
Jianguo Cai ◽  
Zelun Qian ◽  
Jian Feng ◽  
Chao Jiang ◽  
Yixiang Xu
Keyword(s):  
Jacobian Matrix ◽  
Null Space ◽  
Degree Of Freedom ◽  
Building Structures ◽  
Deployable Structures ◽  
Plate Structures ◽  
Constraint Equations ◽  
All Solutions ◽  
New Type ◽  
System Constraint

As one new type of deployable structures, foldable plate structures based on origami are more and more widely used in aviation and building structures in recent years. The mobility and kinematic paths of foldable origami structures are studied in this paper. Different constraints including the rigid plate, pin joints and the boundary conditions of linkages were firstly used to generate the system constraint equations. Then the degree of freedom (DOF) of the foldable plate structures was calculated from the dimension of null space of the Jacobian matrix, which is the derivative of the constraint equations with respect to time. Furthermore, the redundant constraints were found by using this method and multiple kinematic paths existing in origami structures were studied by obtaining all solutions of constraint equations. Different solutions represent different kinematic configurations. The degree of freedom and kinematic paths of a Miura-ori and a rigid deployable antenna were also investigated in details.

Pollutant Identification by Selected Area Electron Diffraction

1974 ◽  
Vol 32 ◽  
pp. 532-533
Author(s):  
R. E. Ferrell ◽  
G. G. Paulson ◽  
C. W. Walker
Keyword(s):  
Thermal Treatment ◽  
Electron Diffraction ◽  
Sample Preparation ◽  
Crystal Structures ◽  
Water Samples ◽  
Environmental Samples ◽  
Short Review ◽  
Selected Area Electron Diffraction ◽  
Multiple Component

Selected area electron diffraction (SAD) has been used successfully to determine crystal structures, identify traces of minerals in rocks, and characterize the phases formed during thermal treatment of micron-sized particles. There is an increased interest in the method because it has the potential capability of identifying micron-sized pollutants in air and water samples. This paper is a short review of the theory behind SAD and a discussion of the sample preparation employed for the analysis of multiple component environmental samples.

POPDC proteins and cardiac function

2019 ◽  
Vol 47 (5) ◽  
pp. 1393-1404 ◽  
Author(s):  
Thomas Brand
Keyword(s):  
Potential Role ◽  
Striated Muscle ◽  
Short Review ◽  
Effector Proteins ◽  
Muscle Disease ◽  
Disease Genes ◽  
Protein Protein Interaction ◽  
Interaction Partners ◽  
And Function

Abstract The Popeye domain-containing gene family encodes a novel class of cAMP effector proteins in striated muscle tissue. In this short review, we first introduce the protein family and discuss their structure and function with an emphasis on their role in cyclic AMP signalling. Another focus of this review is the recently discovered role of POPDC genes as striated muscle disease genes, which have been associated with cardiac arrhythmia and muscular dystrophy. The pathological phenotypes observed in patients will be compared with phenotypes present in null and knockin mutations in zebrafish and mouse. A number of protein–protein interaction partners have been discovered and the potential role of POPDC proteins to control the subcellular localization and function of these interacting proteins will be discussed. Finally, we outline several areas, where research is urgently needed.

School-Climate Factors Contributing to Bullying

2007 ◽  
Author(s):  
Rebecca A. Robles-Pina ◽  
Rachel Porias
Keyword(s):  
School Climate ◽  
Climate Factors
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