The hinge consists of one or more pairs of steel carpenter tapes tape springs connected to a rolling hinge made from plastic wheels connected by steel cables rolamite. The word deployment means the act of unfolding or opening while retraction is the opposite pellegrino 2001. Later on, more complex structures were devised for. Deployable tensegrity reflectors for small satellites. Closed crosssection dual matrix composite hinges for deployable structures. International journal of solids and structures 108 2017 2439 25 nomenclature a area c pitch of involute curve d bending stiffness d f flap bending stiffness d a, d b partially deployed diagonal length e youngs modulus, incomplete elliptic integral of. A number ofeveryday structures could be classed as deploy able. Theory and applications was held on 69 september 1998 in the department of engineering, university of cambridge. Shearinduced buckling of a thin elastic disk undergoing spinup. Feb 06, 2002 deployable structures can vary their shape automatically from a compact, packaged configuration to an expanded, operational configuration. This report presents a study of a recently proposed lowcost hinge for deployable spacecraft appendages. Deployable structures are structures that can be easily reduced in size for trans portationor storage. Matthew santer reader in aerospace structures, imperial college london verified email at imperial.
Dynamics analysis of deployable structures considering a two. Deployable structures have the capacity to transform and predictably adopt multiple predetermined configurations, moving through known paths, while deploying in. Designing these structures for proper deployment requires a characterization of the viscoelastic behavior of the material and how this behavior a. Investigation of deployable structures and their actuation. 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. Cablestiffened pantographic deployable structures part 2. Onedofcylindrical deployable structures with rigid. Harnessing transition waves to realize deployable structures. The developing of elastic deformation patterns with large displacements and the use of responsive materials for actuation can outperform classical manual and motorised systems venetian. A deployable structure is a structure that can change shape so as to significantly change its size examples of deployable structures are umbrellas, some tensegrity structures, bistable structures, some origami shapes and scissorlike structures. Pdf lowcost hinge for deployable structures semantic scholar. Definition deployable structures in architecture 3.
Dr sergio pellegrino has over 25 years of research experience in lightweight deployable structures. Deployable tensegrity structures for space applications doctoral thesis by gunnar tibert errata 11 july 2002 the indices of the cable and strut lengths in equations 3. Method for design and fabrication of freeform deployable structures with lattice skins the general method for designing and fabricating deployable structures with lattice skins is outlined in figure 2. Engineering a new architecture, 2628 may, 1998 aarhus school of architecture, denmark edited by p. Others adopted more of a report style listing the types of deployable structures, but not necessarily trying to class them into specific groups and families. An interdisciplinary design process abstract history reveals that architects and engineers have constantly sought new and creative structural systems. Description of the research the aim of deployable structures for shading applications is to reduce the energy consumption of buildings by adapting their form and orientation to regulate the heat gains. Large umbrellas for the courts of the prophets holy mosque, madinah, 1992.
For space technology applications, many deployable structures have been developed that form a single, closed loop pellegrino and you, 1993, you and pellegrino, 1997. Pellegrino, shape optimization of cover plates for retractable roof structures, computers structures. The wrapping fold pattern is a way of folding a membrane by wrapping it around a central hub. Deployable space structures mechanics of deployable space structures 1. Engineering harnessing transition waves to realize deployable structures ahmad zareei a,1, bolei denga, and katia bertoldi aharvard john a. Deployable structures are also used on spacecraft for deploying solar panels and solar sails spacebased deployable structures can. Further attempts to classify deployable structures include schaeffer et. These are composed of four or six bars sequentially connected to each other by.
Deployable structures that can be packaged for transporta. Origamibased deployable structures made of carbon fiber. Applications deployable struttensioned structures are potential to be the supports for membrane structures, resulting in a system of lightweight and rapidly erected enclosures. International journal of solids and structures 41 1112, 28012820, 2004. Cfrp deployable structures have assumed an elastic material model,3 which does not capture their time and temperature dependence.
Our research on ultralight spacecraft structures combines advanced packaging techniques, often inspired by origami techniques, with the use of polymer films and ultrathin composite materials. Pellegrino, deployable structures springer, 2014, vol. Deployable structures esther rivas adrover download. Constitutive modeling and applications to deployable structures lectures 12 sergio pellegrino california institute of technology. Deployable structures are also used on spacecraft for deploying solar panels and solar sails.
Mobility and compatibility conditions of crystalinspired deployable structures are given, and a detailed design for novel joints with bevels gears is proposed to avoid singularity of these symmetric structures. Costantine rapid design of deployable antennas for cubesats. Deployable structures are structures that can undergo major changes to their configuration through expansion, unfolding, and other means. Deployable structures cism international centre for mechanical sciences 412. Deployable structures simple examples include umbrellas or tents. Hanus, investigation of a deployable military bridge system with a fiber reinforced concrete deck. The use of carbon fiber reinforced polymer cfrp composites for such deployable structures has been limited due to the their rigid and unfoldable nature in general. Pellegrino, s, guest, sd eds iutamiass symposium on deployable structures. In 2004, korkmaz 9 proposed a classification system based on whether building can change their geometry or their location.
Queen of the night epiphyllum oxypetalum in architecture, the concept of a has been copied, by creating transformable, crieiting foldable. Hillebrandt2 1 nasa langley research center, hampton, va, usa 2 dlr institute of composite structures and adaptive systems, braunschweig, germany 3institute of adaptronics and. This book looks at the cutting edge of the subject, examining the different types of deployable structures and numerous design approaches. Overview of highly flexible, deployable lattice structures. Current interest in deployable structures arises mainly from their potential in space. Some authors went into great depth and proposed a classification.
These structures may be used to realize highly compact deployable mechanisms. Deployable structureinitial analysis by luis hernan issuu. Deployable structures cism international centre for mechanical sciences 412 pellegrino, s. Because ofthehigh cost offailures, however, thespace. Deployable structures can vary their shape automatically from a compact, packaged configuration to an expanded, operational configuration. We design and build smallscale physical demonstrators of the novel structural concepts that we are working on. In architecture, they can be used to create more flexible spaces or building elements that can adapt to changing functions or requirements. This hinge is known as tapespring rolamite tsr hinge. This section investigates existing research in deployable structures based primarily in academia and relevant research and patents in the oilfield industry. The first properly engineered deployable structures were used as stabilization booms on early spacecraft. Current technologies and trends of retractable roofs.
A good example is the use of booms, solar arrays and antennas on spacecraft, which have to be compactly stowed for launch, but then must autonomously unfold to their final state. So a precise coupled thermostructural deployment dynamics analysis is important and necessary. Proceedings of the iutam symposium held in cambridge, u. Analysis of lightweight spacecraft structures monday, 8 january 2018 1400 hrs. Spacebased deployable structures can be categorized into three primary classes. The shape of the fold pattern has been worked on by simon guest and sergio pellegrino. Numerical approach to the kinematic analysis of deployable. The main application of deployable structures is for use in space. Shape recovery of viscoelastic deployable structures. Design of retractable roof structures, a retractable roof structure is a type of structure. Deployable structure controlled by active and passive cables. Deployable structures have the capacity to transform and predictably adopt multiple predetermined configurations, moving through known paths, while deploying in a controlled and safe way. Structural morphology in architecture deployable structures.
Deployable structures are thought of as, a special case within the broader class of adaptive structures gantes, 2000. Later on, more complex structures were devised for solar arrays, communication reflectors and telescopes. He was the founder in 1990 and then director until 2007 of the deployable structures laboratory at the university of cambridge. Deployable structures can expand and contract due to their geometrical, material and mechanical properties offering the potential to create truly transforming environments. Student, california institute of technology verified email at caltech. Pellegrino will be personally involved in the ssl activities described below.
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. Deployable tensegrity structures for space applications. Proceedings of 44th aiaaasmeasceahsasc structures, structural dynamics and materials conference, norfolk, va, 710 april 2003, aiaa 20031450. The scientific committee was appointed jointly by the two sponsoring organisations, the international union for theoretical and. Deployable structures are structures which canfold, eitherfor transportationor for storage. Several concepts have been proposed for digital object identifier 10. Deployable structures are typically made of thin membranes and slender elements, which often require foldable yet stiff mechanical properties. The starting point for the method is the 3d surface profile of the part to be deployed. Recently gan and pellegrino 2003 have suggested spatial mechanical linkages for those purposes.
They have the ability to transform themselves from a small, closed or stowed configuration to a much larger, open or deployed. The scientific committee was appointed jointly by the two sponsoring organisations, the international union for theoretical and applied mechanics iutam and the international. Deployable structures for architectural applications a. Accepted for publication in international journal for solids and structures. The concept of deployable structures may be applied, in principle, to the three basic forms of structural functions. Pdf lowcost hinge for deployable structures semantic. For purposes of this work, we will refer to all of these. International centre for mechanical sciences courses and lectures, vol 412. The deployment accuracy of deployable structures is affected by temperature and flexibility. The first properly engineered deployable structures were used as stabilization booms on early. Current retractable roof research is commonly incorporated within the field of deployable structures.
Deployable structures cism international centre for. Launch vehicles are limited in size, while large structures are required for many current andproposed uses ofspace. Selfdeployable origami stent grafts as a biomedical application of nirich tini shape memory alloy foil, mater. However, all of these existing deployable tubes are bistable structures whose transformation mechanisms rely on the inplane elastic deformation.
Kresling, coupled mechanisms in biological deployable structures, in. This cited by count includes citations to the following articles in scholar. Threefoldsymmetric bricard linkages for deployable structures. Pellegrino university of cambridge, cambridge, cb2 1pz, uk 44th aiaaasmeasceahsasc structures, structural dynamics, and materials conference 710 april 2003 norfolk, va for permission to copy or republish, contact the american institute of aeronautics and astronautics. Paulson school of engineering and applied sciences, harvard university, cambridge, ma 028 edited by sigrid adriaenssens, princeton university, princeton, nj and accepted by editorial board member pablo g. Adaptive control of a deployable tensegrity structure. Nojima 4 showed a variety of similar forms with varying degrees of helicity and rotational symmetry. Deployable structure an overview sciencedirect topics. View deployable structures research papers on academia.
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