نتایج جستجو برای: rve
تعداد نتایج: 442 فیلتر نتایج به سال:
In the analysis of textile-reinforced shell structures full-scale models are often impractical due to complex nature meso-structure. The structure is assumed be globally periodic which allows definition a representative volume element (RVE). this contribution, RVE embedded within first-order homogenisation framework, where meso-to-macro transition governed by Hill-Mandel condition. coupled mult...
Abstract Recently, several approaches for multiscale simulations problems with high contrast and no scale separation are introduced. Among them is nonlocal multicontinua (NLMC) method, which introduces multiple macroscopic variables in each computational grid. These explore the entire coarse block resolution one can obtain optimal convergence results independent of scales. However, these not am...
Abstract Paper has always been of great importance as a printing and packaging material. Due to its potential for recyclability reusability, which result in low environmental impact, it is expected that this will soar over the coming years. Nevertheless, even though paper use decades, many research questions are still open, especially field mechanics. One these appropriate size representative v...
Abstract This study aims to establish a framework for multiscale assessment of damage materials with evolving microstructure based on recently proposed peridynamic computational homogenization theory. The starts replacing material complex constitutively equivalent that is microstructurally homogenous. Constitutive equivalence between the original and substitute achieved through enforcing strain...
Abstract Background The mammalian cell-based quadrivalent inactivated influenza vaccine (IIV4c) has advantages over egg-based (IIV4e), as production using cell-derived candidate viruses eliminates the opportunity for egg-adaptation. This study estimated relative effectiveness (rVE) of IIV4c vs IIV4e in preventing cardiorespiratory hospitalizations during 2019–2020 US season. Methods We conducte...
Biopolymer gels, such as those made out of fibrin or collagen, are widely used in tissue engineering applications and biomedical research. Moreover, naturally assembles into gels vivo during wound healing thrombus formation. Macroscale biopolymer gel mechanics dictated by the microscale fiber network. Hence, accurate description can be achieved using representative volume elements (RVE) that ex...
The microstructure-based finite element modeling (MB-FEM) of material representative volume (RVE) is a widely used tool in the characterization and design various composites. However, MB-FEM has number deficiencies, e.g., time-consuming generation workable geometric model, challenge achieving high volume-fractions inclusions, poor quality mesh. In this paper, we first demonstrate that for parti...
Carbon nanotubes (CNTs) possess extremely high stiffness, strength and resilience, and may provide ultimate reinforcing materials for the development of nano composites. In this paper, the effective material properties of CNT-based composites are evaluated using a square representative volume element (RVE) based on the continuum mechanics and with the finite element method (FEM). Formulas to ex...
This paper presents a new multi-scale method for the homogenization analysis of hyperelastic solids undergoing finite strains. The key contribution is to use an incremental nonlinear homogenization technique in tandem with a model reduction method, in order to alleviate the complexity of multiscale procedures, which usually involve a large number of nonlinear nested problems to be solved. The p...
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