Finite Elements in Analysis and Design
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#1Jingyi Wang (University of California, Berkeley)
#2Panayiotis Papadopoulos (University of California, Berkeley)H-Index: 27
Abstract null null A novel finite element-based simulation method is proposed for fused deposition modeling in two dimensions. The method assumes full coupling between the mechanical and thermal response under the assumptions of infinitesimal deformation and finite temperature variation. To account for continuous temperature-induced changes in the geometry, new elements are deposited on the current configuration, while the governing equations are solved on a reference configuration generated bas...
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#1Vikas Sharma (Kyoto University)H-Index: 4
#2Kazunori Fujisawa (Kyoto University)H-Index: 8
Last. Akira Murakami (Kyoto University)H-Index: 71
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Abstract null null This paper aims to develop a moving-mesh type Finite Element Method for the computation of the transient unconfined seepage flow through the porous medium. The proposed method is based on the time discontinuous Galerkin Space-Time Finite Element Method (ST/FEM). It solves the seepage problem in the saturated region. The primary unknown in ST/FEM is piezometric pressure. Fluid velocities are derived from the pressure using Darcy's law. Further, an iterative algorithm has been p...
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#1Y. H. Jung (Hanyang University)H-Index: 2
#2Jaewook Lee (Gwangju Institute of Science and Technology)H-Index: 16
Last. Seungjae Min (Hanyang University)H-Index: 16
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Abstract null null In this paper, a new method is presented to concurrently determine the structural layout and joint interface during the multi-material topology optimization (MMTO) process. Although the development of additive manufacturing techniques allows the fabrication of multi-material structures for soft materials with graded properties, joint materials for joining metals or composites are still needed. This paper proposes a novel material interpolation scheme for defining the joint are...
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#1Boris Burgarella (UdeM: Université de Montréal)
#2Pascal Assi (UdeM: Université de Montréal)
Last. Louis Laberge Lebel (UdeM: Université de Montréal)H-Index: 10
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Abstract null null The behavior of dry fibers is a key component in modeling composite materials. However, it can become very expensive in computation time to model each individual filament. We propose here a new multi-scale method featuring beam elements embedded in truss elements. Truss elements are used to model contact responses and traction while beams elements are used to characterize flexion. This approach is compared to three different models using truss elements only, beam elements only...
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#1Raul Durand (UnB: University of Brasília)H-Index: 2
#2Márcio Muniz de Farias (UnB: University of Brasília)H-Index: 11
Last. Günther Meschke (RUB: Ruhr University Bochum)H-Index: 32
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Abstract null null This paper presents a finite element methodology for modelling solid media with any number of straight or curved reinforcing bars (rebars). The formulation can handle rebars arbitrarily located within a 2D or 3D finite element mesh without the need for nodal compatibility. A new continuous rod–solid interface (or joint) element is developed to connect bulk elements to the rebars, including a method that directly considers the relative displacements. An arbitrary constitutive m...
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#1Ting-Uei Lee (RMIT: RMIT University)
#2Yi Min Xie (RMIT: RMIT University)H-Index: 66
Abstract null null Topology optimization techniques are typically performed on a design domain with pre-determined support conditions to generate efficient structures. Allowing the optimizer to simultaneously design supports and topology offers new design possibilities to achieve improved structural performance and reduce the cost of supports. However, existing simultaneous optimization techniques are limited, with most methods requiring cumbersome procedures to pre-define support conditions, wh...
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#1D. Desena-Galarza (UPM: Technical University of Madrid)H-Index: 1
#2Hamidreza Dehghani (University of Luxembourg)H-Index: 5
Last. Jose Merodio (UPM: Technical University of Madrid)H-Index: 23
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Abstract null null In this investigation, the mechanical modelling of a hyperelastic residually stressed thick-walled circular cylindrical tube under inflation and extension is performed from a numerical standpoint. The constitutive relation is derived for residually stressed solids using an invariant-based free energy approach. A three-dimensional residual stress field is introduced in the argument of the free-energy function. This formulation is incorporated into a numerical procedure using th...
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Abstract null null This paper proposes a level set-based topology optimization method for acoustic metasurfaces consisting of multiple types of unit cells. As a type of acoustic metasurface, we focus on a two-layered metasurface, where each layer contains various types of unit cell designs. To handle this metasurface, we first propose a two-scale homogenization method based on previous studies targeting metasurfaces composed of a single type of unit cell structure. As a result of homogenization,...
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#1Matteo Giacomini (UPC: Polytechnic University of Catalonia)H-Index: 10
#2Luca BorchiniH-Index: 1
Last. Antonio HuertaH-Index: 54
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Reduced order models (ROM) are commonly employed to solve parametric problems and to devise inexpensive response surfaces to evaluate quantities of interest in real-time. There are many families of ROMs in the literature and choosing among them is not always a trivial task. This work presents a comparison of the performance of a priori and a posteriori proper generalised decomposition (PGD) algorithms for an incompressible Stokes flow problem in a geometrically parametrised domain. This problem ...
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