Evidence indicates that cruciferous vegetables are protective against a range of cancers with glucosinolates and their breakdown products considered the biologically active constituents. To date, epidemiological studies have not... more
Many methods were recently adopted by geotechnical engineers to promote the function of foundations. They always try to create procedures to improve the vertical and lateral load capacity (i.e. reduce the riskiness of sliding, overturning... more
We investigate the use of a second-order cone programming (SOCP) framework for computing complex 3D steel assemblies in the context of elastoplasticity and limit analysis. Displacement and stress-based variational formulations are... more
Malaria epidemics in African highlands cause serious morbidity and mortality and are being reported more frequently. Weather is likely to play an important role in initiating epidemics but limited analysis of the association between... more
A meshless Element-Free Galerkin (EFG) equilibrium formulation is proposed to compute the limit loads which can be sustained by plates and slabs. In the formulation pure moment fields are approximated using a moving least squares... more
This paper presents a new numerical procedure for kinematic limit analysis problems, which incorporates the cell-based smoothed finite element method (CS-FEM) with second-order cone programming. The application of a strain smoothing... more
The meshless Element-Free Galerkin (EFG) method is extended to allow computation of the limit load of plates. A kinematic formulation which involves approximating the displacement/velocity field using the moving least squares technique is... more
SUMMARYThis paper presents a numerical formulation for computation of collapse load of Mindlin–Reissner plates that uses stabilized discrete shear gap finite elements and second‐order cone programming. Displacement fields are approximated... more
The implementation of an h-adaptive Element-Free Galerkin (EFG) method in the framework of limit analysis is described. The naturally conforming property of meshfree approximations (with no nodal connectivity required) facilitates the... more
The static limit analysis of axially symmetric masonry domes subject to pseudo-static seismic forces is addressed. The stress state in the dome is represented by the shell stress resultants (normal-force tensor, bending-moment tensor, and... more
A static limit analysis approach is proposed for assessing the collapse capacity of axisymmetric masonry domes subject to horizontal forces. The problem formulation is based on the sound theoretical framework provided by the classical... more
A computational method is proposed for the lower-bound limit analysis of masonry arches with multiple failure sections. Main motivation is the observation that, not only the position, but also the orientation of the failure sections in an... more
A triangular parabolic cross vault, that was designed by Musmeci in the 1950s as a reinforced concrete structure but remained unbuilt, is revisited from the original perspective of its reinvention as a masonry structure. In the framework... more
The limit analysis of dry-masonry block assemblages with non-associative frictional joints is formulated as a Mixed Complementarity Problem. To overcome the computational issues due to the non-convexity of the complementarity constraints,... more
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or... more
The design of sheet pile walls by lower bound limit analysis is considered. The design problem involves the determination of the necessary yield moment of the wall, the wall depth and the anchor force such that the structure is able to... more
Limit analysis is a computationally efficient tool to assess the resistance and the failure mode of structures but does not provide any information on the displacement capacity, which is one of the concepts which most affects the seismic... more
Tosca 1 includes in his Tratado de la montea y cor-
Using a three-dimensional stress formulation a lower bound analysis is presented for evaluating the limit internal pressure for a pressure vessel consisting of a thick spherical shell and a thick radial cylindrical nozzle. The... more
The limit equilibrium method with a multi-block failure mechanism has been utilised to study and estimate the bearing capacity of shallow foundations on anisotropic deposits. The multi-block mechanisms of Hill and Prandtl types were... more
During their operation, modern aircraft engine components are subjected to increasingly demanding operating conditions, especially the high pressure turbine (HPT) blades. Such conditions cause these parts to undergo different types of... more
The present paper addresses the problem of factor of safety (FS) determination in 3D slope stability analysis. For that purpose, use is made of two numerical methods/techniques in three benchmark problems: numerical limit analysis (NLA)... more
This article describes the principles and actual procedures of restoration and strengthening of heritage buildings that have been applied in mountainous regions of Caucasus, in Georgia. The buildings in question are the 11th century... more
This article describes the principles and actual procedures of restoration and strengthening of heritage buildings that have been applied in mountainous regions of Caucasus, in Georgia. The buildings in question are the 11th century... more
In this contribution, original limit analysis numerical results are presented dealing with some reinforced masonry arches tested at the University of Minho-UMinho, PT. Twelve in-scale circular masonry arches were considered, reinforced in... more
In this paper, a comparison between results furnished by a 3D FE upper bound limit analysis and experimental results for some reinforced masonry arches tested at the University of Minho (Portugal) is provided. While the delamination from... more
The oldest continuum-mechanics based approach to the numerical analysis of cracking masonry arches is due to Castigliano, 1879 [1, p. 472–478]. Castigliano analyzed the structural behaviour of Ponte Mosca, Turin (erected in 1834). He... more
N.B. Using a real DOI will form a link to the Version of Record on Taylor & Francis Online. The AM is defined by the National Information Standards Organization as: "The version of a journal article that has been accepted for publication... more
Limit analysis is a computationally efficient tool to assess the resistance and the failure mode of structures but does not provide any information on the displacement capacity, which is one of the concepts which most affects the seismic... more
This paper describes a probabilistic study of the two dimensional bearing capacity of a vertically loaded strip footing on spatially random, cohesive soil using Numerical Limit Analyses (NLA-CD). The analyses uses a Cholesky Decomposition... more
Numerical limit analyses have been used to evaluate the stability of the 17 th Street Canal Iwall levee during Hurricane Katrina. The potential formation of a water-filled gap along the canal-side soil-wall interface at failure is... more
Masonry arches, vaults and domes are architectural elements diffusely present in a great part of the human construction heritage. Brought to its maximum magnificence from the Roman genius, and then spread all over the World throughout... more
In this paper the efficiency is evaluated of the main approaches to the analysis of masonry structures, subjected to horizontal actions, starting from the approximate methods up to specifically studied methods of automatic calculation.... more
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
This paper presents an upper bound limit analysis procedure using the node-based smoothed finite element method (NS-FEM) and second order cone programming (SOCP) to evaluate the stability of twin circular tunnels in cohesive-frictional... more
The performance of the DK (Discrete Kirchhoff) and DKM (Discrete Kirchhoff-Mindlin) shell element classes in the upper bound finite-element-based limit analysis and in the sequential finite-element-based limit analysis VítězslavŠtembera... more
We present a mathematical framework for the theory of limit analysis of rigid, perfectly plastic bodies where the equality of the static multiplier and kinematic multiplier for incompressible fields is formulated and proved in a compact... more
A. For a given structure made of a perfectly plastic material with a yield stress s Y , we consider the load capacity ratio of the structure: the largest positive number C, depending only on the geometry of the structure, which... more
The majority of built heritage covering large spans are built with curved masonry components, such as multi-ring arches, to attain greater overall thickness. Their ultimate structural capacity when subjected to external loads is... more
This study is on progressive collapse analysis of a sample steel building using various procedures suggested by the General Service Administration and the Department of Defense. The progressive collapse was accommodated by removing... more
Buried pipelines are a safe, economical and efficient way of transporting oil and gas in both onshore and offshore environments. The pipeline generally passes through a wide variety of soil, and is buried at varying depths to maintain the... more
A new algorithm is presented for size optimization of truss structures with any kind of smooth objectives and constraints, together with constraints on the collapse loading obtained by limit analysis, for several loading conditions. The... more
Most of the buildings in the historical center of the cities in Italy are quite old, and sometimes their age is more than several centuries. This means that a double activity aim should be considered by the community, the historical... more
Different systems of reinforcements can be arranged in order to improve the seismic strength of the historical masonry buildings. The most common one consists in the insertion into the original structure of suitable horizontal devices as... more
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY