Topological Derivative
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. A New Synthetic Route and Comprehensive Topological Study of a Benzimidazole Derivative
Benzimidazole and its derivatives are molecules that have diverse biological properties, therefore we synthesized and studied a new benzimidazole to understand their physical/chemical properties. The compound was obtained through a new synthetic route, using graphite oxide, in the absence of solvent, with crystalline packaging supported by C-H…N and C-H…
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Schinus terebinthifolius: phenolic constituents and in vitro antioxidant, antiproliferative and in vivo anti-inflammatory activities
ABSTRACT Schinus terebinthifolius Raddi, Anacardiaceae, native to Brazil, is referred to as "pimento-rosa" and is used to treat inflammatory disease in folk medicine. Studies have reported important pharmacological properties, but these effects have still not been fully exploited. This study reports that the crude extract and isolated compounds of S. terebin
Rev. bras. farmacogn.. Publicado em: 2017-08
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3. Topological derivative-based topology optimization of structures subject to multiple load-cases
AbstractThe topological derivative measures the sensitivity of a shape functional with respect to an infinitesimal singular domain perturbation, such as the insertion of holes, inclusions or source-terms. The topological derivative has been successfully applied in obtaining the optimal topology for a large class of physics and engineering problems. In this p
Lat. Am. j. solids struct.. Publicado em: 2015-05
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4. Topological sensitivity analysis for a two-parameter Mooney-Rivlin hyperelastic constitutive model
The Topological Sensitivity Analysis (TSA) is represented by a scalar function, called Topological Derivative (TD), that gives for each point of the domain the sensitivity of a given cost function when an infinitesimal hole is created. Applications to the Laplace, Poisson, Helmoltz, Navier, Stokes and Navier-Stokes equations can be found in the literature. I
Latin American Journal of Solids and Structures. Publicado em: 2010
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5. Análise de sensibilidade topológica em modelos constitutivos multi-escalas / Topological Sensitivity Analysis in Constitutive Multi-Scale Models
The purpose of the present work is to carry out a topological sensitivity analysis in constitutive multi-scale models. By making use of the Hill-Mandel Principle of Macro-Homogeneity and the concept of volume average, a variational formulation was established to derive a clearly structured axiomatic framework for constitutive multi-scale models of the presen
Publicado em: 2009
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6. Análise de sensibilidade topológica de segunda ordem / Second order topological sensitivity analysis
The topological derivative provides the sensitivity of a given shape functional with respect to an infinitesimal non-smooth domain pertubation (insertion of hole or inclusion, for instance). Classically, this derivative comes from the second term of the topological asymptotic expansion, dealing only with inifinitesimal pertubations. However, for pratical app
Publicado em: 2008
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7. Processamento de imagens via derivada topológica e suas aplicações na modelagem e simulação computacional do sistema cardiovascular humano / Image processing via topological derivative and its applications to human cardiovascular system modelling and simulation
Este trabalho tem por objetivo estudar a restauração e segmentação de imagens médicas e sua aplicação na Modelagem do Sistema Cardiovascular Humano. O aumento da complexidade na ciência tem motivado o intercâmbio de conhecimento e técnicas entre diferentes disciplinas. Neste sentido a Derivada Topológica, originariamente concebida para tratar de m
Publicado em: 2007
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8. Multiprojeet enviromental and simple profuct: the parteicipation of maufacturing in product development process. / Ambiente de multiprojeto e produto simples: a participação da manufatura no processo de desenvolvimento de produtos
This research studies the product and process development (PD) in three companies, in Brazil. The research takes place in a multi-project environment with simple products, this mean companies where the annual product and process innovation rate is very high. The companies studied belongs to candy food, cosmetics and shoes business segments. To better underst
Publicado em: 2007
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9. Topological sensivity analysis in problems with geometric non-linearities and nonlinear nearly-incompressible hiperelasticity / Analise de sensibildade topologica em problemas de não-linearidade geometrica e hiperelasticidade não-linear quasi-incompressivel
The aim of the present work is to optimize the topology of elasticity problems with geometric nonlinearities (large displacement and rotation) and material nonlinearities, in this case, nonlinear nearly-incompressible hyperelasticity applying the concept of Topological Sensitivity Analysis (TSA) and a total Lagrangian formulation. The TSA results in a scalar
Publicado em: 2006
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10. Performance and parameterization of the algorithm Simplified Generalized Simulated Annealing
The main goal of this study is to find the most effective set of parameters for the Simplified Generalized Simulated Annealing algorithm, SGSA, when applied to distinct cost function as well as to find a possible correlation between the values of these parameters sets and some topological characteristics of the hypersurface of the respective cost function. T
Genetics and Molecular Biology. Publicado em: 2004
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11. Análise de Sensibilidade Topológica / Topological Sensitivity Analysis
The Topological Sensitivity Analysis results in a scalar function, denoted as Topological Derivative, that supplies for each point of the domain of definition of the problem the sensitivity of a given cost function when a small hole is created. However, when a hole is introduced, it is no longer possible to stablish a homeomorphism between the domains. Due t
Publicado em: 2003
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12. Aplicação do conceito de derivada topologica na otimização estrutural de problemas da elasticidade
This work deals with the application of the topological derivative to obtain the optimal topology of elastic problems. The topological derivative defines the sensitivity of a cost function, defined over the domain, to the creation of a hole. In this work, the topological derivative is obtained based on shape design sensitivity analysis concepts. In this way,
Publicado em: 2002