Metamaterials are part of the expanding field composite materials with engineered structures, though some areas remain underdeveloped. One these involves analysis complex band structures (k(ω)-approach), more particularly to truss cells, in comparison purely real ones (ω(k)-approach). We seek fill this knowledge gap by presenting and discussing employment both approaches on while analyzing how stiffness mass impact structure. Two-dimensional metamaterial addressing distinct (BG) phenomena...

Iniciado em 2004 pelo Governo Federal, o programa Luz Para Todos (LpT) visa proporcionar às famílias de baixa renda do meio rural melhorias na saúde, educação e qualidade vida, fazendo da eletrificação um vetor para desenvolvimento social econômico que aprimora Índice Desenvolvimento Humano. O proposito deste artigo abordar a importância apropriação tecnologia sucesso programas quando se utiliza, especificamente, energia solar fotovoltaica. Em detalhe, trabalho busca demostrar dificuldade...

The study aims to enhance the bonding strength in reinforced concrete using a novel Auxetic Tubular Deformed Rebar (ATDR). A high-resolution non-linear finite element model was developed perform numerical analysis of pull-out tests (PoT). Two sets simulations were conducted: one replicate behavior under compression and tension tests, other for PoT, validated with experimental data. Numerical utilized microplane plasticity–damage, regularized by an implicit gradient. geometry involves adding...

In orthodontics, the CR is defined as ideal point for positioning of bracket. This paper presents numerical analyses a premolar tooth, which aim at searching centre resistance (CR) by applying several external torques. We built geometry tooth making tomographic renderisation with software MIMICS. The simulation performed in ANSYS WORKBENCH (ANSYS® Academic Research). domain discretized using three-dimensional solid elements. search position made through heuristic analysis torques to model...

A Economia Circular visa transformar o modelo linear de 'extrair, transformar, descartar' em um ciclo contínuo uso e regeneração recursos, promovendo tanto a sustentabilidade quanto resiliência econômica. Para apoiar transição do setor industrial rumo à circularidade, há framework RESOLVE. No entanto, agrícola produção alimentos também enfrentam desafios relacionados emissões degradação ambiental, que torna necessária adaptação dos princípios da esse contexto. Observando ausência amplamente...

The dairy industry has experienced significant changes since 2021, characterized by increased milk production and a concurrent exodus of producers as the sector becomes more professionalized modernized. A pressing concern within this chain is management whey, byproduct cheesemaking. While whey nutritionally rich, its improper disposal poses environmental threat. shift towards Circular Economy (CE) imperative to foster sustainable growth in sector. CE can create new markets, generate income,...

quantidades de materiais baixo custo e fácil acesso, além energia.Contudo esse modelo foi importante para o desenvolvimento industrial (ELLEN MACARTHUR FOUNDATION, 2015).No entanto, as questões globais os desafios intensificam a urgência se restringir crescimento material zero, permanecer dentro dos limites sistemas

Reinforced concrete beam (RCB) elements show low mechanical performance when interfacial bonding strength (IBS) is not well controlled. New tailorable material-structure arrangements - Metamaterials offer solutions to the IBS problem. This paper analyzes characteristics of on RCBs for reinforced cement mortar containing Metamaterial bars (MMB) that were machined from SAE 1020 Carbon steel. Each MMB has a stepped geometrical shape, with cylindrical bar divided into equal-length segments,...

qualidade de vida à presente e futuras gerações.O âmbito social busca a equidade justiça social, promovendo o acesso aos direitos básicos, como

In this paper, the finite element method is applied to obtain nonlinear dynamic behaviour of risers using a bi-dimensional Reissner frame element. The proposed methodology based on minimum potential energy theorem written regarding nodal positions. are slender pipes used in offshore industry link seabed with vessel. paper buoyancy load given by Archimedes principle. self-weight as distributed force. current velocities and accelerations calculated linear Airy theory for waves. hydrodynamic...

Abstract Recent works show that in structures, there is a relationship between the natural period of vibration and global second-order effects. This occurs because both depend on stiffness matrix mass structure. In this work, non-linear geometric method - modal P-delta – proposed takes advantage dynamic parameters The methodology establishes an association buckling instability modes structural modes. An interpolation without axial loading with critical to approximate frequencies loaded way,...