Javier Canales

Verified

Javier verified their affiliation via an institutional email.

Learn more

Verified

Javier verified their affiliation via an institutional email.

Learn more

• Ph. D
• Professor (Full) at University of the Basque Country

This paper investigates the topology optimization of structures subjected to self-weight loads with self-supporting constraints for additive manufacturing. The integration of topology optimization procedures and additive manufacturing techniques can make the most of their advantages, and there is significant interest today in integrating both appro...

Eraikuntza sektorean hormigoiak eta morteroak izanda gehien erabiltzen diren eraikuntza-materialak, lehengai natural asko kontsumitzen dituzte, bere osagai nagusiak -harea eta zementua- harrobietatik lortutako harri natural desberdinak tratatuz lortu behar baitira. Baliabide naturalen erabilera murrizteko helburuarekin, artikulu honetan, galdaketak...

Las estructuras porosas poseen una relación “propiedades mecánicas/peso” muy elevada y una gran robustez respecto a variaciones en la orientación de las cargas, lo que las convierte en una muy interesante alternativa a sus contrapartes homogéneas. Un claro ejemplo de este tipo de sistemas se puede encontrar en el interior de las estructuras óseas,...

This paper aims to encourage the circular economy and merge the manufacturing and the construction industries, providing waste fibres from the electrical discharge machining of the former as raw material for the latter. The research analyses the effect on the physical, thermal and mechanical properties of mortars reinforced with brass fibres. The m...

In order to mitigate climate change, reductions of energy consumption are required on heating systems for residential and non-residential buildings. Despite radiant floor heating systems are being widely used due to their high thermal efficiency and comfort, further improvements are necessary to reduce the carbon footprint of the mortars used. This...

This paper aims to evaluate the effect of recycled brass fibres on the physical, thermal and mechanical properties of cementitious mortars. For that purpose, seven different mortars, with the same water/cement ratio but using two different brass fibres were manufactured. Not-machined brass fibres were used as a reference and compared to the waste b...

Nowadays, strengthening and refurbishing of existing structures on urban areas has gained interest in order to reduce costs by avoiding both the use of construction raw materials and the disposal of construction and demolition waste on landfill. Usually, existing structures need to be locally demolished in order to replace either the existing corro...

Free-cutting steels are developed to produce large quantities of parts with low mechanical behavior, mainly for automotive sector. These alloys contain phosphorous, lead, sulfur, and manganese that help to improve the machinability and surface roughness. However, due to the toxicity of lead, steel mills in recent years have been focusing on non-tox...

This document comprises the different approaches achieved during the project In2Track in the matter of predictive analyses by using several techniques in order to enhance track design and to provide cost-effective solutions in railway track.

This report support this quest by identifying current status, identifying key influencing parameters and define prioritised areas of improvement. Here “status” implies both the current status of track design, but also the current status of knowledge. This knowledge is related to key influencing parameters – which these are, how they are quantified...

Nowadays, refurbishing of existing structures has gained interest in order to reduce both the construction materials used and the construction and demolition waste production. For that purpose, there are several methods for demolishing the damaged parts, but most of the alternatives involve high noise and dust production, which are in contrapositio...

Nowadays, refurbishing of existing structures has gained interest in order to reduce both the construction materials used and the construction and demolition waste production. For that purpose, there are several methods for demolishing the damaged parts, but most of the alternatives involve high noise and dust production, which are in contrapositio...

This paper presents a theoretical and experimental study of multidirectional steel fibers reinforced concrete slabs (SFRC). The study is based on a real building application using SFRC flag slabs. For the evaluation of the slabs bearing capacity, plastic calculations are performed both at section and structure levels. The section analysis uses the...

Purpose – This paper aims to show an evolutionary topology optimization procedure for the design of compliant electro-thermal mechanisms. Design/methodology/approach – The adopted methodology is based in the evolutionary structural optimization (ESO) method. This approach has been successfully applied by this group for compliant mechanisms optimiz...

In this research, an evolutionary optimization procedure is proposed for the design of compliant thermal microactuators subjected to non-uniform temperature fields. Compliant micro-mechanisms that are responsible for movement play a crucial role in MEMS design, which cannot be manufactured using typical assembly processes and may not make use of tr...

In this paper, an evolutionary optimization procedure is proposed for the design of compliant thermal microactuators subjected to non-uniform temperature fields. During recent decades topology optimization techniques have been shown to be efficient tools to conceive these kinds of distributed compliant mechanisms. The procedure applied in this pape...

This work presents an element addition strategy for 3D compliant mechanisms design. The proposed procedure is based on an extension of the evolutionary structural optimization (ESO) method, which has been successfully applied to several optimum material distribution problems, but not for 3D compliant mechanisms optimization.Even if most investigati...

Purpose – The purpose of this paper is to describe an element addition strategy for topology optimization of thermally actuated compliant mechanisms under uniform temperature fields. Design/methodology/approach – The proposed procedure is based on the evolutionary structural optimization (ESO) method. In previous works, this group of authors has su...

Topology optimization of compliant mechanism by means of a modified version of the evolutionary structural optimization procedure (ESO) is presented in this work. The proposed procedure is based in the evolutionary structural optimization method, which has been successfully applied to several optimum material distribution problems, such us stiffnes...

This work presents a modified version of the evolutionary structural optimization (ESO) procedure for its application in topology optimization of compliant mechanisms. The proposed procedure is based in the ESO method, which has been successfully applied to several optimum material distribution problems, such us stiffness, frequency or buckling pro...

Although the rotary sealing mechanism of a lip seal with hydrodynamic aids had already been intuitively described, there are two factors to be taken into account. One of which is the existence of many different types, a consequence of experimental development, and the other, the need to standardize design for questions of reliability. Therefore, sy...

This work presents a modified version of the evolutionary structural optimization procedure for topology optimization of continuum structures subjected to self-weight forces. Here we present an extension of this procedure to deal with maximum stiffness topology optimization of structures when different combinations of body forces and fixed loads ar...

Symmetric forms of systems of equations describing physical phenomena present exceptional desirable properties such as symmetric coefficient matrices, well posedness of the Cauchy initial value problem, finite wave propagation speeds and a link to nonlinear stability principles. Therefore, they should be used when possible to design better numerica...

Typically, segregated methods have been used for the computation of incompressible flows whereas coupled solvers, for compressible flows. Compared to coupled solvers, segregated methods present the advantage of computational savings in RAM memory and CPU time, although at the cost of an inferior robustness. However, previously published segregated...

Traditionally, coupled methods have been employed for the computation of compressible flows, whereas segregated methods have been preferred for the computation of incompressible flows. Compared to coupled methods, segregated solvers present the advantage of reduced computer memory and CPU time requirements, although at the cost of an inferior robus...

This paper presents a combined shape and reinforcement layout optimization method of shell structures. The approach described in this work is applied to optimize simultaneously the geometry of the shell mid-plane as well as the layout of surface stiffeners on the shell. This formulation involves a variable ground structure, since the shape of the s...

In this paper an automated approach for simultaneous shape and topology optimization of shell structures is presented. Most research in the last decades considered these optimization techniques separately, seeking an initial optimal material layout and refining the shape of the solution later. The method developed in this work combines both optimiz...

This work presents a computational method for integrated shape and topology optimization of shell structures. Most research in the last decades considered both optimization techniques separately, seeking an initial optimal topology and refining the shape of the solution later. The method implemented in this work uses a combined approach, were the s...

Diemakers have, in recent years, been asked to deliver sheet forming tools more swiftly and at lower cost. However, it is their traditional design methodology that most holds them back. This paper proposes a new approach, combining the use of numerical simulation with the design-aid system CAETROK. In many cases it is on the basis of numerical simu...

In this paper an application of structural optimization to the design of structures with constraints in frequency and mode shape is presented. The objective is to obtain an optimum design making adequate changes in the structure to modify its dynamic characteristics. The method is based on an iterative process of optimization that includes structur...

In this paper a system for structural shape optimization named CODISYS is presented. This system allows us to obtain an automated design procedure for linear elastic structures by integrating structural analysis, sensitivity evaluation and mathematical programming methods in a Computer Aided Design environment. The integration of these different di...

In this paper we present a procedure for automatic mesh generation specifically developed for shape optimal design problems. This procedure is implemented as a module in a general system for shape optimal design of linear elastic structures. The module provides the mesh generation and its adaptive refinement. It works in a wholly automatic way. The...

1. Abstract Topology optimization of compliant mechanism by means of a modified version of the evolutionary structural optimization procedure (ESO) is presented in this work. The proposed procedure is based in the evolutionary structural optimization method, which has been successfully applied to several optimum material distribution problems, such...

This work presents an element addition strategy for topology optimization of thermally actuated compliant mechanisms under uniform temperature fields. The proposed procedure is based in the evolutionary structural optimization (ESO) method, which has been successfully applied to several optimum material distribution problems, but not for thermal co...

Publicado en el número monográfico dedicado al XIV Congreso Nacional de Ingeniería Mecánica, Leganés, 13, 14 y 15 de diciembre de 2000, Escuela Politécnica Superior, Universidad Carlos III de Madrid. El presente trabajo recoge parte de los resultados que pueden obtenerse cuando se aplican las técnicas de diseño estructural óptimo a estructuras espa...