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Browsing by Subject "Shape optimization"

Now showing items 1-13 of 13

Advanced numerical techniques for the acoustic modelling of materials and noise control devices in the exhaust system of internal combustion engines

Sánchez Orgaz, Eva María (Universitat Politècnica de València, 2016-05-16)

[EN] This Thesis is focused on the development and implementation of efficient numerical methods for the acoustic modelling and design of noise control devices in the exhaust system of combustion engines. Special attention ...
Allying topology and shape optimization through machine learning algorithms

Muñoz-Pellicer, David; Nadal, Enrique; Albelda Vitoria, José; CHINESTA SORIA, FRANCISCO JOSE; Ródenas, Juan José (Elsevier, 2022-07-01)

[EN] Structural optimization is part of the mechanical engineering field and, in most cases, tries to minimize the overall weight of a given design domain, subjected to functionality constraints given in terms of stresses ...
Cartesian grid FEM (cgFEM): High performance h-adaptive FE analysis with efficient error control. Application to structural shape optimization

Nadal Soriano, Enrique (Universitat Politècnica de València, 2014-02-14)

More and more challenging designs are required everyday in today¿s industries. The traditional trial and error procedure commonly used for mechanical parts design is not valid any more since it slows down the design ...
Computational Morphogenesis of Free Form Shells

OHMORI, H.; KIMURA, T.; MAENE, A. (Editorial Universitat Politècnica de València, 2009-12-01)

A new method of computational morphogenesis for the shell structures with free curved surface is proposed, where not only the shape of shell surface but also the topology of the curved surface can be obtained at the same ...
Computational morphogenesis of free form shells: Filter methods to create alternative solutions

BLETZINGER, Kai-Uwe; FIRI, Matthias; LINHARD, Johannes; WÜCHNER, Roland (Editorial Universitat Politècnica de València, 2009-12-01)

Actual trends in numerical shape optimal design of structures deal with handling of very large dimensions of design space. The goal is to allowing as much design freedom as possible while considerably reducing the modelling ...
Estimación del error de optimización y control de error de discretización en procedimientos de optimización heurísticos con un calculador de MEF comercial

Rosillo Haro, Juan (Universitat Politècnica de València, 2020-05-18)

[ES] A lo largo del proceso de cálculo mediante procedimientos de optimización heurísticos, no resulta sencillo establecer el error de optimización cuando la solución actual se aproxima a la del problema. Esto se debe a ...
Evaluación de estrategias de parametrización geométrica y de la medida de control de la velocidad de convergencia en metodologías de optimización de forma basadas en algoritmos evolutivos

Sánchez Orgaz, Eva María (Universitat Politècnica de València, 2012-06-25)

EVALUACIÓN DE LA INFLUENCIA DE LOS PARÁMETROS DE CONTROL, LA FUNCIÓN OBJETIVO Y LA ESTRATEGIA DE PARAMETRIZACIÓN EN LA VELOCIDAD DE CONVERGENCIA DEL PROCESO DE OPTIMIZACIÓN DE FORMA BASADO EN AE EN BASE A PROBLEMAS DE ...
Linkage-based movable bridges: Design methodology and three novel forms

Thrall, Ashley P.; Adriaenssens, Sigrid; Paya-Zaforteza, I.; Zoli, Theodore (Elsevier, 2012-04)

Linkages have been widely used in machines and deployable structures, but these mechanisms have rarely been employed in the design of movable bridges. This paper explores the use of linkages both to actuate the kinematic ...
Shape Optimization for Thermal Insulation Problems

Tozza, Silvia; Toraldo, Gerardo (Editorial Universitat Politècnica de València, 2022-05-11)

[EN] In this work we consider two domains: an external domain whose geometry varies, and an internal fixed one. From the thermal insulation viewpoint, we are considering a body to be insulated, enveloped in a layer of ...
Shape Optimization of Free-form Shells Considering Strain Energy and Algebraic Invariants of Parametric Surface

FUJITA, Shinnosuke; OHSAKI, Makoto (Editorial Universitat Politècnica de València, 2009-12-01)

A new approach is proposed for shape optimization of shell surfaces, where requirements on the aesthetic aspect and the constructability as well as the structural rationality are simultaneously considered in the problem ...
Shape optimization of small span textile reinforced cementitious composite shells

TYSMANS, Tine; ADRIAENSSENS, Sigrid; WASTIELS, Jan (Editorial Universitat Politècnica de València, 2009-12-28)

The property of concrete to be poured into any shape and harden at ambient temperatures makes it the most widely-used material for shells. Using this traditionally brittle material in shells restricts their forms to mostly ...
Structural Shape Optimization Based On The Use Of Cartesian Grids

Marco Alacid, Onofre (Universitat Politècnica de València, 2018-07-06)

As ever more challenging designs are required in present-day industries, the traditional trial-and-error procedure frequently used for designing mechanical parts slows down the design process and yields suboptimal designs, ...
Structural shape optimization using Cartesian grids and automatic h-adaptive mesh projection

Marco, Onofre; Ródenas, J.J.; Albelda Vitoria, José; Nadal, Enrique; Tur Valiente, Manuel (Springer-Verlag, 2017)

[EN] We present a novel approach to 3D structural shape optimization that leans on an Immersed Boundary Method. A boundary tracking strategy based on evaluating the intersections between a fixed Cartesian grid and the ...