Tópicos Sugeridos dentro de su búsqueda.
Tópicos Sugeridos dentro de su búsqueda.
https://purl.org/pe-repo/ocde/ford#2.01.01
128
https://purl.org/pe-repo/ocde/ford#2.01.00
69
https://purl.org/pe-repo/ocde/ford#5.02.04
49
https://purl.org/pe-repo/ocde/ford#5.03.01
36
https://purl.org/pe-repo/ocde/ford#5.01.00
30
https://purl.org/pe-repo/ocde/ford#2.00.00
27
Rendimiento académico
26
más ...
1
artículo
Publicado 2019
Enlace
Enlace
This paper initially describes aspects of the modeling of structures equipped with energy dissipators Shear Link Bozzo (SLB) and develops two iterative design procedures to select these devices. This methodology is applied to a precast 5-story reinforced concrete building. The SLB energy dissipation devices are initially stiff, but ductile with a range of yielding forces from 36 kN to 900 kN characterized by 52 + 52 standard devices. Moreover, these devices can be combined in parallel giving a very wide range of possibilities for selection and corresponding structural response. Therefore, to simplify its automatic selection, this article presents two procedures: (1) direct iteration and (2) inverse or fixed force iteration. Both procedures were implemented in an automatic application or “plugin” for the ETABS program that automates its selection for a specific structural system or ar...
2
artículo
Publicado 2012
Enlace
Enlace
The objective of this work is to provide a reliable numerical model using the finite element method (FEM) for the dynamic analysis of reinforced concrete (RC) structures. For this purpose, a computer program based on a strain-rate sensitive elasto-plastic theory is developed using 3D brick finite elements. The implicit Newmark scheme with predictor and corrector phases is used for time integration of the nonlinear system of equations. In addition, the steel reinforcement is considered to be smeared and perfectly adhered to concrete and represented by membrane finite elements. Two benchmark examples are analyzed with the present numerical model and results are compared with those obtained by other authors. The present numerical model is able to reproduce the path failure, collapse loads and failure mechanism within an acceptable level of accuracy.
3
artículo
Publicado 2012
Enlace
Enlace
The objective of this work is to provide a reliable numerical model using the finite element method (FEM) for the dynamic analysis of reinforced concrete (RC) structures. For this purpose, a computer program based on a strain-rate sensitive elasto-plastic theory is developed using 3D brick finite elements. The implicit Newmark scheme with predictor and corrector phases is used for time integration of the nonlinear system of equations. In addition, the steel reinforcement is considered to be smeared and perfectly adhered to concrete and represented by membrane finite elements. Two benchmark examples are analyzed with the present numerical model and results are compared with those obtained by other authors. The present numerical model is able to reproduce the path failure, collapse loads and failure mechanism within an acceptable level of accuracy.
4
artículo
This study suggests an interdisciplinary model for the analysis of school argumentation that applies the Theory of Argumentation to the educational field. For the reconstruction of the school argumentative discourse, two theoretical tools have been used: Lo Cascio’s (1998) textual linguistics —useful in order to discover the argumentative framework— and the new rhetoric of Perelman and Olbrechts-Tyteca (1958/1989), which will serve to recognize the argumentative techniques used. The method of this work is a qualitative research with descriptive orientation; the latter aspect can be seen in the systematic observation of the elements that make up the argumentation, the graphic representation of the arguments and the identification of the argumentative techniques used by the students in their dissertation. The evaluation of these data provides an understanding of the relationship betw...
5
artículo
Publicado 2022
Enlace
Enlace
Lima, the capital of Peru, has not suffered from a great earthquake since 1746, making this a prone Mw 8.8 earthquake area according to seismological studies. In this context, seismic structural health monitoring presents an opportunity to assess rapidly buildings after a great earthquake and protect inhabitant from those buildings with high risk of collapse due to aftershocks. A basic seismic structural health monitoring arrangement of a fifteenth-floor residential building is presented using a low-cost sensor called Raspberry Shake 4D. The implemented sensor incorporates both a vertical velocity geophone and three orthogonally positioned microelectromechanical systems accelerometers. The building is a reinforced concrete shear walls structure located in Comas, north of Lima. More than thirty seismic events have been recorded, including the Mw 8.0 Lagunas earthquake (05/26/2019) and the...
6
artículo
Publicado 2018
Enlace
Enlace
The purpose of this research is to contribute to preservation of our historical heritage represented in this study by the Cathedral of Tacna, making an analysis of the cathedral with emphasis on the dome through a model in a specialized software, using the Finite element tool. From the structural analysis carried out, it was determined that the dome of the cathedral of Tacna would fail in several points, for which reason the respective reinforcement with the Geosteel 2000 material is proposed, whose inclusion in the model realized results in an improvement in its capacity resistant. Finally it is concluded that it is necessary to reinforce the dome and the proposed material fulfills the function of improving the resistant capacity of it.
7
artículo
Publicado 2018
Enlace
Enlace
The purpose of this research is to contribute to preservation of our historical heritage represented in this study by the Cathedral of Tacna, making an analysis of the cathedral with emphasis on the dome through a model in a specialized software, using the Finite element tool. From the structural analysis carried out, it was determined that the dome of the cathedral of Tacna would fail in several points, for which reason the respective reinforcement with the Geosteel 2000 material is proposed, whose inclusion in the model realized results in an improvement in its capacity resistant. Finally it is concluded that it is necessary to reinforce the dome and the proposed material fulfills the function of improving the resistant capacity of it.
8
artículo
Publicado 2018
Enlace
Enlace
The purpose of this research is to contribute to preservation of our historical heritage represented in this study by the Cathedral of Tacna, making an analysis of the cathedral with emphasis on the dome through a model in a specialized software, using the Finite element tool. From the structural analysis carried out, it was determined that the dome of the cathedral of Tacna would fail in several points, for which reason the respective reinforcement with the Geosteel 2000 material is proposed, whose inclusion in the model realized results in an improvement in its capacity resistant. Finally it is concluded that it is necessary to reinforce the dome and the proposed material fulfills the function of improving the resistant capacity of it.
9
artículo
Publicado 2011
Enlace
Enlace
With our article FLEXIBLE COST STRUCTURES TO OVERCOME THE GLOBALIZATION AND COMPETITIVENESS IN THE COMPANIES, presented in the journal QUIPUKAMAYOC Nº 33 we began an investigation to propose a model that incorporates the increasingly used strategy to achieve cost competitiveness in the market. Companies, with the new model of competitiveness that demands flexible production processes, are implementing business strategies in order to SPEED UP, SIMPLYFY and SECURE processes. Service companies are part of this strategy, which they are transferred functions or activities carried out within companies. But as we discussed in this article, SERVICE or OUTSOURCING costs can no longer be treated inside the other indirect costs of production (ICP) so we are looking for the fourth element, as a proposal to manage costs more accurately. This time, we will analyze various service contracts to underst...
10
artículo
Publicado 2011
Enlace
Enlace
With our article FLEXIBLE COST STRUCTURES TO OVERCOME THE GLOBALIZATION AND COMPETITIVENESS IN THE COMPANIES, presented in the journal QUIPUKAMAYOC Nº 33 we began an investigation to propose a model that incorporates the increasingly used strategy to achieve cost competitiveness in the market. Companies, with the new model of competitiveness that demands flexible production processes, are implementing business strategies in order to SPEED UP, SIMPLYFY and SECURE processes. Service companies are part of this strategy, which they are transferred functions or activities carried out within companies. But as we discussed in this article, SERVICE or OUTSOURCING costs can no longer be treated inside the other indirect costs of production (ICP) so we are looking for the fourth element, as a proposal to manage costs more accurately. This time, we will analyze various service contracts to underst...
11
artículo
The social, economic, and environmental consequences of the failure of an arch dam make it essential to evaluate its dynamic response to mitigate the risk of a disaster. Since the slenderness and flexibility of these dams tend to increase the fluid-structure interaction during an earthquake, this work compares the dynamic response of a hypothetical arch dam in the Marañón river, in northern Perú, for both full and empty-reservoir conditions. Three formulations were used to estimate the hydrodynamic pressures: Westergaard’s added mass, Eulerian and Lagrangian. The comparisons were performed for earthquakes of distinct seismogenic sources, previously matched to a uniform hazard spectrum with a return period of 10000 years. The finite element method was used to derive the seismic demands of the dam-reservoir-foundation system in COMSOL Multiphysics software, carrying out time-history a...
12
artículo
Publicado 2021
Enlace
Enlace
The Linguistics of the text proposes the study of a text from a global point of view, since it conceives it as a coherent unit, carrying meaning. From the perspective of that field of study, this research aims to show how, in the story "Agua" by José María Arguedas, there is an underlying textual superstructure corresponding to a discourse of denunciation, which becomes evident in the elements that form part of the fictional universe proposed by the story. We make use of the discursive categories that the researcher María Claudeville postulated as recurring in the textual structures of the denunciation discourses. These categories are present in the possible world manifested in the story "Agua", in which the existence of a problem and the search for a solution are exposed. Thus, it is shown how a fictitious text can serve as a means to publicize a speech of denunciation.
13
artículo
Publicado 2021
Enlace
Enlace
The fire in the structure causes the temperature of the concrete surface to increase, thus reducing its resistance to compression, bending and elastic modulus. Although concrete has a poorer conductor than steel, the constant high temperature on the surface causes gradual heating in its inner layer. As a building material, concrete is widely used due to its high resistance to fire, it is essential to withstand one of the most severe disasters that a structure can withstand in its life. The objective of this document is to carry out a systematic review of the effects that fire has on the mechanical and thermal properties of reinforced concrete structures. 50 articles published in a database indexed between the years 2011 and 2021 were reviewed, distributed as follows: 28 in Scopus, nine in Web of Science, eight in Scielo, three in ScienceDirect and two in EBSCO, referring to concrete resi...
14
artículo
Publicado 2021
Enlace
Enlace
The fire in the structure causes the temperature of the concrete surface to increase, thus reducing its resistance to compression, bending and elastic modulus. Although concrete has a poorer conductor than steel, the constant high temperature on the surface causes gradual heating in its inner layer. As a building material, concrete is widely used due to its high resistance to fire, it is essential to withstand one of the most severe disasters that a structure can withstand in its life. The objective of this document is to carry out a systematic review of the effects that fire has on the mechanical and thermal properties of reinforced concrete structures. 50 articles published in a database indexed between the years 2011 and 2021 were reviewed, distributed as follows: 28 in Scopus, nine in Web of Science, eight in Scielo, three in ScienceDirect and two in EBSCO, referring to concrete resi...
15
artículo
Publicado 2021
Enlace
Enlace
The investigation had as main objective to analyze the evaluation of the structural reduction in the design of a building with seismic isolators in the district of Tacna-2021, for this research the Faculty of Architecture and Urbanism of the Private University of Tacna was analyzed, for which it was carried out based on the Peruvian Technical Standards, relying on the Dynamic Isolation Catalog for the design of Insulators, then (03) Three Modelings were performed in the Etabs V19 Software, Structural Modeling without Seismic Isolators, Structural Modeling with Seismic Isolators and Modeling with Seismic Isolators-Structural Reduction. The Descriptive Method was used, systematically describing and analyzing the existing information regarding the results obtained by modifying the current conditions of the situation. As a result, a structural reduction of 20.47m2 of the columns was obtained...
16
artículo
Publicado 2022
Enlace
Enlace
Background: In January 2020, the World Health Organization declared the coronavirus disease 2019 (COVID-19) «a public health emergency of international concern» owing to the detection of cases and the rapid spread of the disease. Objective: This study aimed at understanding the social representations of COVID-19 among Brazilian elderly women. Method: A total of 100 elderly women selected by convenience sampling, with an average age of 69.24 years old (SD = 6.58), participated in the study. Data were collected online using a sociodemographic questionnaire and a free word association test (FWAT) with the stimulus word «COVID-19.» The responses were examined by prototypical analysis through IRaMuTeQ. Results: The social representations of COVID-19 emphasize death and fear of the disease caused by the novel coronavirus. Elements associated with measures to contain the virus are also part...
17
artículo
Publicado 2019
Enlace
Enlace
In this work, we present some numerical results about the problem of a rising hot solid sphere immersed in a Newtonian fluid which viscosity depends on the temperature. The model formulated to solve the problem considers two dimensionless parameters: The Peclet number, Pe and a parameter related with the viscosity, e. Small and large variations on e lead to interesting results segregated into two regimes which exhibit an asymptotic structure.To carry out the computations to solve the proposed model, the element finite method was used along with a non-slip boundary condition for the contact surface between the sphere and the fluid and the results obtained were compared to those shown recently in papers related wherein contact surface has a slip-boundary condition prescribed.
18
artículo
Publicado 2019
Enlace
Enlace
In this work, we present some numerical results about the problem of a rising hot solid sphere immersed in a Newtonian fluid which viscosity depends on the temperature. The model formulated to solve the problem considers two dimensionless parameters: The Peclet number, Pe and a parameter related with the viscosity, e. Small and large variations on e lead to interesting results segregated into two regimes which exhibit an asymptotic structure.To carry out the computations to solve the proposed model, the element finite method was used along with a non-slip boundary condition for the contact surface between the sphere and the fluid and the results obtained were compared to those shown recently in papers related wherein contact surface has a slip-boundary condition prescribed.
19
tesis de grado
Publicado 2019
Enlace
Enlace
En nuestra región y en todo el país existe mucha informalidad en la ejecución de viviendas de albañilería confinada, esto en su mayoría se debe a un mal diseño estructural y falta de criterio de los constructores por ello este trabajo pretende hacer un diseño tal que sirva a futuros profesionales como referencia en el desarrollo de proyectos de este tipo. En este trabajo se resolverá el problema aplicando la mejor manera de realizar el análisis y diseño estructural de un edificio de albañilería confinada tal que sea óptimo y económico de acuerdo los lineamientos de la Norma Técnica de Edificaciones E.070 conjuntamente con las demás normas vigentes de estructuras. Para el análisis del edificio que se diseñó se siguió una metodología que comienza con la estructuración donde se buscó una distribución para asegurar una rigidez adecuada en ambas direcciones para contr...
20
tesis de grado
La presente investigación trata sobre “El análisis estructural de la Iglesia San Pedro de Carabayllo” considerada el monumento histórico más antiguo de Lima Norte. Este trabajo se desarrolló con el objetivo de determinar su análisis estructural; utilizando un modelo matemático de acuerdo al método de elementos finitos, determinando los valores numéricos de los esfuerzos y sus desplazamientos. Esta tesis es una investigación aplicada, cuantitativa de diseño descriptivo y de tipo explicativo, no experimental, transversal y prospectivo. Se concluye que la estructura no cumple con los desplazamientos mínimos según norma sismo resistente y que falla al someterla a cargas de sismo, planteándonos de esta manera alternativas de reforzamiento para la estructura; evitando así afectar la autenticad de los materiales de la estructura. This research is about “Structural analysis ...
