A New Analytic and Numerical Basis for the Form-Finding and Analysis of Spline and Grid-Shell Structures

2009 ◽  
Author(s):  
S. Adriaenssens ◽  
M.R. Barnes ◽  
C.J.K. Williams
Keyword(s):  
Shell Structures ◽  
Form Finding ◽  
Grid Shell

scholarly journals Shell-supported footbridges

2020 ◽  
Vol 7 (1) ◽  
pp. 199-214
Author(s):  
Luigi Fenu ◽  
Eleonora Congiu ◽  
Giuseppe Carlo Marano ◽  
Bruno Briseghella
Keyword(s):  
Topology Optimization ◽  
High Efficiency ◽  
Shell Structures ◽  
Form Finding ◽  
Fundamental Research ◽  
Spring System ◽  
Earthquake Action ◽  
Concrete Shell ◽  
Concrete Shells ◽  
Thrust Network Analysis

AbstractArchitects and engineers have been always attracted by concrete shell structures due to their high efficiency and plastic shapes. In this paper the possibility to use concrete shells to support footbridges is explored. Starting from Musmeci’s fundamental research and work in shell bridge design, the use of numerical form-finding methods is analysed. The form-finding of a shell-supported footbridge shaped following Musmeci’s work is first introduced. Coupling Musmeci’s and Nervi’s experiences, an easy construction method using a stay-in-place ferrocement formwork is proposed. Moreover, the advantage of inserting holes in the shell through topology optimization to remove less exploited concrete has been considered. Curved shell-supported footbridges have been also studied, and the possibility of supporting the deck with the shell top edge, that is along a single curve only, has been investigated. The form-finding of curved shell-supported footbridges has been performed using a Particle-Spring System and Thrust Network Analysis. Finally, the form-finding of curved shell-supported footbridges subjected to both vertical and horizontal forces (i.e. earthquake action) has been implemented.

scholarly journals The use of a particle method for the modelling of isotropic membrane stress for the form finding of shell structures

2015 ◽  
Vol 61 ◽  
pp. 24-31 ◽  
Author(s):  
Francis Aish ◽  
Sam Joyce ◽  
Samar Malek ◽  
Chris J.K. Williams
Keyword(s):  
Particle Method ◽  
Shell Structures ◽  
Membrane Stress ◽  
Form Finding

Form Finding of Shell Structures by Using Membrane Theory

2021 ◽  
pp. 213-237
Author(s):  
Francesco Marmo ◽  
Nicoló Vaiana
Keyword(s):  
Shell Structures ◽  
Membrane Theory ◽  
Form Finding

ARCHITECTURAL POTENTIALITY OF FREE-FORM STRUCTURES

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Anas Hameed ◽  
Hoda Al-Alwan ◽  
Nazar Oukaili
Keyword(s):  
Parametric Design ◽  
Weight Ratio ◽  
High Strength ◽  
Free Form ◽  
Form Finding ◽  
Shell System ◽  
Construction Techniques ◽  
Grid Shell ◽  
Architectural Structures ◽  
Free Form Structures

Contemporary architecture has witnessed a new innovative trend in design characterized by the creation of interesting free-flowing structures that reflect expressiveness of form and design, as well as the uniqueness of structure and approaches of construction. These fascinating structures are often perceived as landmarks that blend harmoniously into their surroundings. In the last two decades, parametric design and advanced computational tools, with prefabrication and construction techniques, enabled architects and engineers to explore new materials and methods to create such impressive structures, breaking the obsolete ways of thinking. Several examples of free-form structures lack obviously to explore architectural potentialities, that enrich the intention of architect, are still unformulated. The main objective of the present paper includes a conceptual proposal exploring the architectural potentiality of the free-form structures, focusing on form-finding possibilities through optimizing both the geometry and the mass of the structure, to generate configurations that ensure self-supported forms with stable force equilibrium. The paper introduces two simplified analytical methods to achieve the efficiency of the free-form architectural structures: the first depends on using extra materials to strengthen surfaces (such as grid shell system), and the second includes changing the geometry to achieve high “strength-to-weight” ratio (such as folding or conical self supports). By applying these methods, it is possible to explore various form-finding possibilities that contribute to the generation of characteristic landmarks with impressive structures.

scholarly journals Stability of metal cylindrical grid shell structures

2019 ◽  
Vol 675 ◽  
pp. 012067
Author(s):  
A I Siyanov ◽  
M Rynkovskaya ◽  
E Tupikova
Keyword(s):  
Shell Structures ◽  
Grid Shell ◽  
Cylindrical Grid

Tensegrity spline beam and grid shell structures

2001 ◽  
Vol 23 (1) ◽  
pp. 29-36 ◽  
Author(s):  
S.M.L Adriaenssens ◽  
M.R Barnes
Keyword(s):  
Shell Structures ◽  
Grid Shell

Biomimetic timber shells made of bending-active segments

2017 ◽  
Vol 32 (3-4) ◽  
pp. 149-159 ◽  
Author(s):  
Daniel Sonntag ◽  
Simon Bechert ◽  
Jan Knippers
Keyword(s):  
Role Models ◽  
Research Field ◽  
Shell Structures ◽  
Special Focus ◽  
Form Finding ◽  
Plate Structures ◽  
Timber Construction ◽  
Different Levels ◽  
Stiffness Distribution ◽  
Construction System

In the research field of segmented timber shells, two construction systems have lately received much attention, which both expose interesting structural and constructional characteristics: planar plate structures made of thin plywood and actively bent plywood structures. The research presented in this article combines elements of both approaches, resulting in a construction system for segmented shell structures with elastically bent elements. The increasing complexity of this approach requires a sophisticated design process, which integrates fabrication constraints as well as structural feedback. As a consequence, form-finding strategies of bending-active timber shells are discussed, with a special focus on the programming of the stiffness distribution in order to fulfil geometrical requirements. The authors also reflect on the specific structural challenges of joining thin sheets of plywood by transferring traditional textile connection methods to timber construction. Investigations of biological role models such as the sand dollar led to transfers of constructional principles on different levels. The resulting construction system was validated through the design and construction of a full-scale architectural prototype.

scholarly journals Estimation Of Young’s Modulus Of Elesticity By The Form Finding Of Grid Shell Structures By The Dynamic Relaxation Method

2015 ◽  
Vol 23 (4) ◽  
pp. 25-30 ◽  
Author(s):  
Ivana Grančičová ◽  
Ján Brodniansky
Keyword(s):  
Young’S Modulus ◽  
Young's Modulus ◽  
Relaxation Method ◽  
Dynamic Relaxation ◽  
Form Finding ◽  
Grid Shell ◽  
Important Input ◽  
Internal Forces ◽  
Considerable Impact ◽  
Dynamic Relaxation Method

Abstract The paper is basically focused on the process of form finding by the dynamic relaxation method (DRM) with the aid of computational tools that enable us to make many calculations with different inputs. There are many important input values with a significant impact on the course of the calculations and the resulting displacement of a structure. One of these values is Young’s modulus of elasticity. This value has a considerable impact on the final displacement of a grid shell structure and the resulting internal forces.

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