Métodos CAD/CAE aplicados a la generación de nuevas mallas tensegríticas de doble capa
ABSTRACT: The main subjects of this research are tessellations (or mosaics), double-layer grids (DLGs) and double-layer tensegrity grids (DLTGs). The difference between the last two kinds of structures is the concept Tensegrity, a principle of “suspended rigidity”. Tensegrity structures have isolate...
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| Tipo de recurso: | tesis doctoral |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | Universidad de Cantabria (UC) |
| Repositorio: | UCrea Repositorio Abierto de la Universidad de Cantabria |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.unican.es:10902/6776 |
| Acceso en línea: | http://hdl.handle.net/10902/6776 |
| Access Level: | acceso abierto |
| Palabra clave: | CAD CAE Tensegrity Spatial Structures Double-Layer Grid Deployable Tessellations Thesis Tensegridad Estructuras Espaciales Doble capa Malla Desplegable Mosaicos Tesis |
| Sumario: | ABSTRACT: The main subjects of this research are tessellations (or mosaics), double-layer grids (DLGs) and double-layer tensegrity grids (DLTGs). The difference between the last two kinds of structures is the concept Tensegrity, a principle of “suspended rigidity”. Tensegrity structures have isolated components in compression (usually bars or struts) inside a net of continuous tension (usually cables, tendons or membranes), in such a way that the compressed members do not touch each other and the pre-stressed tensioned members delineate the system spatially. This thesis is trying to discern if it is possible to generate new types of DLTGs by means of CAD/CAE methods. CAD (Computer-Aided Design) deals with the use of computer systems to assist in the creation, modification, or optimization of a design. CAE (Computer-Aided Engineering) establishes the use of computer software to assist in engineering analysis tasks. There are not many types of different DLTGs; in fact, most of them are composed by basic modules juxtaposed one beside each other and the current varieties are limited. The motivation of this work is investigating new methods to create innovative DLTGs, study the different degrees of freedom for their composition and open a new line of research for the geometrical and structural analysis of novel kinds of grids. In order to do so, the methodology proposed here is based on the use of a novel process called Rot-Umbela Manipulation, which is able to generate new tensegrity space frames in a systematic manner. This approach will take into consideration the intensive use of software tools (mainly CAD/CAE) to find out a systematic process for manipulating existing DLGs and DLTGs. The results of applying Rot-Umbela Manipulations to existing structures have permitted new DLTGs and new tensegrity modules to be found. We have also observed that, by means of applying these new operations, it is conceivable to obtain other DLTGs already in existence that up to this point had been composed in a different manner by using different approaches. Moreover, this research has also proposed the following: a new nomenclature for tessellations and DLG, which permits to define their unequivocal and automatic generation; STICCI.eu, a software tool that improves the analysis of literature reviews (e.g. the influence of different authors, journals, papers, etc.); and a procedure for the design, fabrication and construction of a deployable DLTG. In conclusion, this work opens a new door to the discovery of novel tensegrity structures, broadening the range of potential applications for which these constructions may be employed. Furthermore, a range of opportunities for further research exist, related to the lines of enquiry opened in this work as discussed at the end of this thesis. |
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