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Showing 1 to 17 of 17 for “"Isogeometric analysis"”.
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Modeling curvature-resisting material surfaces using isogeometric analysis
… at finite strains using surface-enriched isogeometric analysis. Coupled with a hyperelastic bulk, bending-resistance of material surfaces furnishes a new physical length scale, i.e., the elastobending length. We quantify the effect of elastobending deformations for several numerical …
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Finite elements for higher-order problems in isogeometric analysis and statistical inference
… for higher-order problems with applications to isogeometric analysis and statistical inference. In both areas, the efficient solution of higher-order partial differential equations is essential. The construction of isogeometric smooth spline basis functions is crucial for solving higher-order …
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Isogeometric Analysis: Fundamentals and details of implementation. From first steps to two-dimensional non-linear problems
Isogeometric analysis (IGA) is a computational analysis technique that can serve as an alternative to the traditional finite element method (FEM) in approximating solutions to differential equations. IGA is not necessarily more efficient that traditional FEM, but because of its nature, can …
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Thermomechanical and Vibration Analysis of Stiffened Unitized Structures and Threaded Fasteners
… ANSYS while a fully functional code using isogeometric analysis was developed from scratch for the latter. For the threaded fasteners, a global simplified 3D model is built to evaluate the deformation of the structure. A second local model reproducing accurately the threads of the fasteners …
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Analysis, Design, and Experimentation of Beam-Like Structures
… in modeling low aspect ratio beams. First, an Isogeometric Analysis (IGA) is conducted using both FSDT and EBT to predict thermal buckling of periodically supported composite beams. Isogeometric analysis overcomes the limitations of the Gibbs phenomenon at discontinuities for a periodically …
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Space--Time Computation of a Ringsail Parachute With Model Thickness
… and Modeling specializes in computational analysis of geometrically complex parachutes. In earlier computations, the parachutes modeled by our team did not include the fabric thickness in the fluid domain, as doing so would require a large number of elements, which is computationally …
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Flow Analysis of Vibration Modes in Turbocharger Turbines
… To that end, we conduct computational flow analysis of a turbocharger turbine with 13 rotor blades and 14 stator blades for precomputed time-dependent blade deformation patterns. The flow analysis is carried out for the rotor vibration modes corresponding to a set of natural frequencies …
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Isogeometric topology optimization for auxetic metamaterials and structures
… about the developments of topology optimization, isogeometric topology optimization and the rational design of auxetic materials is provided. In Chapter 3, a more effective and efficient topology optimization method using isogeometric analysis is proposed for continuum structures using an enhanced …
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Isogeometric Finite Element Code Development for Analysis of Composite Structures
This research endeavor develops Isogeometric approach for analysis of composite structures and take advantage of higher order continuity, smoothness and variation diminishing property of Nurbs basis for stress analysis of composite and sandwich beams and plates. This research also computes stress …
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Mixed Isogeometric Form Finding Of Lightweight Structures
… structures. Thus starting from a detailed analysis of the state of the art, in the present work the attention has been given on the Force Density Method and the Updated Reference Strategy applied to cables and membranes. These methods have been examined by means of numerous applications …
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Mollified piecewise polynomial approximants of arbitrary order and smoothness
… impediment to the engineering design-analysis cycle. As designs become increasingly more complex, meshing is considered to be the major bottleneck that might affect the advancement of downstream applications. There are some contending approaches developed to bypass the meshing, for …
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Isogeometric Design, Analysis and Optimisation of Lattice-Skin Structures
… and the lattice structure. A new and systematic isogeometric analysis approach that integrates the geometric design, structural analysis and optimisation of lattice-skin structures is proposed in the dissertation. In the geometric design of lattice-skin structures, a novel shape interrogation …
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Subdivision and manifold techniques for isogeometric design and analysis of surfaces
Design of surfaces and analysis of partial differential equations defined on them are of great importance in engineering applications, e.g., structural engineering, automotive and aerospace. This thesis focuses on isogeometric design and analysis of surfaces, which aims to integrate engineering …
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Isogeometric Approach to Optical Tomography
… This research implements the recently developed Isogeometric Approach (IGA) and particularly IGA-based FEM to address the aforementioned issues. The IGA-based FEM has the potential to enhance adaptivity and reduce the computational cost of discretization schemes. The research in this study …
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A sharp interface isogeometric strategy for moving boundary problems
<p>The proposed methodology is first utilized to model stationary and propagating cracks. The crack face is enriched with the Heaviside function which captures the displacement discontinuity. Meanwhile, the crack tips are enriched with asymptotic displacement functions to reproduce the tip …
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Objective 1D beam FE-formulations for the analysis of deployable pantographic structures
… possono essere generalizzate all'analisi isogeometrica (IGA).