Antonio Agüero Ramón Llin

Antonio Agüero Ramón Llin
Universitat Politècnica de València | UPV · Department of Continuous Medium Mechanics and Theory of Structures

PhD Eng
https://es.mathworks.com/matlabcentral/profile/authors/3792691

About

90
Publications
22,145
Reads
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245
Citations
Additional affiliations
May 2009 - August 2009
Polytechnique Montréal
Position
  • postDoc position
May 2006 - August 2006
Stanford University
Position
  • PostDoc Position
May 2005 - August 2005
Korea Advanced Institute of Science and Technology
Position
  • PostDoc Position
Education
January 2000 - December 2000
Universitat Politècnica de Catalunya
Field of study
  • Máster en Métodos Numéricos en Ingeniería
September 1991 - December 1997
Universitat Politècnica de València
Field of study
  • Civil engineering

Publications

Publications (90)
Article
The purpose of this paper is to present a proposal for the design of steel structures sensitive to lateral torsional buckling due to bending moment in order to fill the gaps in the current Standard EN 1993-1-1, guidelines for obtaining the magnitude of the imperfection. The proposal generalizes the approach provided in clause 5.3.2(11) of EN 1993-1...
Article
Three approximate interaction formulae for the plastic resistance of I-shaped cross-sections under bending moment about strong axis My,Ed, bending moment about weak axis Mz,Ed and bimoment BEd were created and analyzed. An interaction formula that takes into account these three internal forces is missing in Eurocodes. For the verification of intera...
Article
The Eurocodes EN 1993-1-1:2005, prEN 1993-1-1:2020, and EN 1999-1-1:2007, prEN 1999-1-1:2020 propose the same method. They take into account the geometrical equivalent Unique Global and Local Initial (UGLI) imperfections. According to the Eurocodes, the assumed shape of UGLI imperfections may be derived from the elastic buckling mode and provide a...
Article
The interaction formulae for the plastic resistance of channel sections under combination of 4 internal forces: the bending moment about strong axis My,Ed, the bending moment about weak axis Mz,Ed, the bimoment BEd and the axial force NEd were created and analyzed. The exact interaction curves obtained by the linear programming for 4 internal force...
Conference Paper
In the present paper a program THINWALLRES is explained to obtain the elastic and plastic resistance of thin walled HVH sections under many combinations of the internal forces: axial force N, shear forces Vz and Vy, bending moments My and Mz, bimoment B, warping torsional moment Tw (= Mxw) and Saint Venant torsional moment Tt (= Mxs). The program T...
Conference Paper
Analysis of plastic resistance of Z-sections under combination of various internal forces is presented. Hot-rolled Z-sections of Class 1, 2 or 3 are analysed. Elastic cross-sectional properties of hot-rolled Z-sections may be taken also from German standard DIN 1027:2004-04. It is shown that some values in DIN 1027:2004-04 are incorrect. Roll forme...
Conference Paper
Analysis of plastic resistance of channel sections under combination of various internal forces is presented. Hot-rolled channel sections of Class 1, 2 or 3 are analysed. Elastic cross-sectional properties of hot-rolled channel sections may be taken also from German standard DIN 1026-2:2002-10, the other standards or the tables of profile producers...
Article
Full-text available
The resistances of HVH sections (H—horizontal upper flange, V—vertical web, H—horizontal bottom flange) were investigated by the authors in the frame of the large parametrical studies focused on the complete HVH-section categories: channels, Z-sections, I-sections, and H-sections. The three different variants of the approximate formulae for the cal...
Code
Elastic and plastic resistance of open and thin walled sections
Code
Analysis of critical loads and imperfect structures
Data
Type of analysis can be elastic or plastic. Fig 1 show loadings and elastic supports. The inplane loadings must be in equilibrium. The out of plane supports and springs are added according to Excel. Fig.1 In plane loading, tosional loading and out of plane loading, vertical forcé and spring position. Results the following plots are shown(Check crit...
Code
In plane analyisis of imperfect structures Arch and frames.
Code
Design elastic an plastic of thin walled sections. This update tells you when computing is finished. https://labmatlab-was.upv.es/webapps/home/thinwallres.html
Code
3D analyisis of imperfect structures Arch and frames.
Code
Analysis of structures with geometric equivalent imperfection. Column, beam and beam column
Data
Analysis imperfect structures
Code
Design of open thin walled sections elastic and plastic.
Data
Open thin walled section resistence elastic and plastic: https://labmatlab-was.upv.es/webapps/home/thinwallres.html
Article
In the frame of a large parametrical study metal built-up columns made from steel and made of aluminum alloy were investigated. The second order theory is used for the analysis of the battened and laced built-up columns under combined compression and bending. The bottom column ends are fixed and the upper ones are free in the case of in-plane buckl...
Article
Eurocodes give guidance how to design built-up columns having effective bending stiffness, smeared shear stiffness and local bow imperfection amplitude e 0 = L/ 500 under compression. The guidance is valid only for columns supported by hinges at their ends . The second order theory is presented, which allows analysis of the battened and laced built...
Article
Full-text available
A new procedure was presented with the objective of proving that it is the generalization of current attempts in designing compressed members and structures which is able to solve cases where other authors have problems. It is the further development of the former methods published by Chladný, Baláž, Agüero et al., which are based on the shape of t...
Article
Headed studs are often used to facilitate composite actions between steel and concrete structures. In steel building structures, reinforced concrete walls are commonly used to ensure composite action to stiffen steel frames as a lateral resistance system against horizontal loads, such as earthquakes or wind. Such walls need to be anchored to the st...
Article
Headed studs are key components of structures which facilitate composite behavior between steel and concrete elements. In steel building structures, reinforced concrete infill walls surrounded by a stiff steel frame is a common example of a composite structure used to resist horizontal loads such as those produced by earthquakes or wind. To this en...
Conference Paper
Full-text available
Related degrees Aerospace Engineering are newly created in the UPV. It is in these early stages when a solid long-term educational project should be consolidated to ensure the training of students and graduates acquire skills towards their professional future. The availability of real aerostructures in the "Pedro Duque" Laboratory available to the...
Article
The purpose of this paper is to present a proposal for the design of steel structures sensitive to buckling due to compression in order to fill in the gaps in the current Standard EN 1993-1-1 guidelines for obtaining the magnitude of the geometric equivalent imperfection. The proposal generalizes the approach provided in Clause 5.3.2(11) of EN 1993...
Article
Full-text available
A new iterative method for polynomial root-finding based on the development of two novel recursive functions is proposed. In addition, the concept of polynomial pivots associated with these functions is introduced. The pivots present the property of lying close to some of the roots under certain conditions; this closeness leads us to propose them a...
Article
The purpose of this paper is to present a proposal for the design of steel structures sensitive to buckling to fill the gaps in the current Standard EN 1993-1-1, providing guidelines to obtain the magnitude of the imperfection generalizing the procedure given in clause 5.3.2(11) of EN 1993-1-1 for steel structures sensitive to flexural buckling und...
Conference Paper
El estudio de la ductilidad es muy importante en elementos estructurales sometidos a esfuerzos combinados, ya que nos determina la capacidad de resistencia y a la deformación. Actualmente son escasos los ensayos experimentales para el estudio de soportes esbeltos sometidos a carga axial y carga lateral cíclica, donde también hay carencia de estu...
Article
Full-text available
A theoretical analysis using three well-known masonry analysis constitutive models is performed on a masonry structure to simulate the response of the structure to specific seismic forces. The results of the three numerical approaches are compared and a discussion is presented, mainly intended for professionals, concerning the suitability of the th...
Article
This paper presents a design method to evaluate the ultimate limit state in slender structures. The method addresses the main two features in this type of analysis: how to deal with the nonlinear geometric behaviour and the possible imperfections, incorporating all frame and member imperfections into a process that only requires cross-sectional che...
Article
The aim of this paper is to present a practical advanced analysis method for steel frame design, based on a simplified second-order elastic analysis of the structure with an equivalent geometric imperfection. The second order effects are calculated using the orthogonality properties of the buckling modes. The geometric imperfection is obtained from...
Article
Full-text available
A study was performed to investigate the possibility of modeling the seismic inelastic cyclic response of steel bracing members using the OpenSees computer program. The study focuses on bracing members made of rectangular and square steel tubes. The efficiency and the accuracy obtained from the force (FBE) and displacement (DBE) based elements are...
Article
In this paper the ability of the basic shell triangular (BST) element to perform linearized buckling analysis is evaluated. The results have been compared with analytical solutions and other finite elements in the literature, such as ANDES3, ANDES4, QSEL, FFQC and BCIZ. This type of analysis is applied to the design of steel structures to obtain th...
Article
This paper deals with the seismic behaviour of an unreinforced masonry chimney representative of the large number of chimneys currently in existence in many European areas which were built during the period of the industrial revolution. Maximum seismic intensity value that can be resisted in terms of peak ground acceleration and failure mode are th...
Conference Paper
The chapter presents a practical advanced analysis method for a steel frame design, based on a simplified second-order elastic analysis of the structure with an equivalent geometric imperfection. The second order effects are calculated using orthogonality properties of the buckling modes. The geometric imperfection is obtained from the buckling mod...
Article
The aim of this paper is to present a practical advanced analysis method for steel frame design, based on a simplified second-order elastic analysis of the structure with an equivalent geometric imperfection. The second order effects are calculated using the orthogonality properties of the buckling modes. The geometric imperfection is obtained from...
Conference Paper
The aim of this paper is to present a practical advanced analysis method for steel frame design, based on a simplified second-order elastic analysis of the structure with an equivalent geometric imperfection. The second order effects are calculated using the orthogonality properties of the buckling modes. The geometric imperfection is obtained from...
Conference Paper
Full-text available
This chapter presents a comparison between force based elements (FBE) and displacement (DBE) based elements for the analysis of the seismic inelastic cyclic response of steel bracing members. In the force based element (mixed formulation), compatibility and equilibrium equations are satisfied in a weak sense. The implementation is based on the Hell...
Book
Full-text available
Metodo para el diseño de estructuras metalicas con imperfecciones.
Conference Paper
Full-text available
This paper deals with the analysis of network tension structures to find the initial equilibrium configuration under the effect of own weight and prestressing. An analytical study is presented to find a relative minimum of the total potential energy of the structure. The potential energy depends on the nodal coordinates of the structure which are u...
Conference Paper
Full-text available
This paper present a new method for the form-finding problem of network tension structures (textile structures) to find their shapes under the effect of permanent loads (own weight and prestressing) or transitory loads (own weight, prestressing and various service loads). The cutting pattern of the network is also determined in order to obtain a st...
Article
Full-text available
El problema del pandeo elástico en estructuras espaciales con secciones doblemente simétricas bajo la acción de unos esfuerzos primarios de axil y flexión según el eje fuerte es resuelto con el programa CRIT3D. Para ello se calcula el efecto de los esfuerzos primarios sobre los términos de la matriz de rigidez asociados a la flexo-torsión, plantean...

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