Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Global-Local Analysis"”.
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Global/local analysis of laminated panels with cutouts and cracks
… directed towards developing efficient and rapid analysis procedures. This scenario is also true for many research-oriented finite element codes which have a limited element library or have a problem-size limit because of the use of a memory-resident equation solver. This study focuses on the …
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Development of partial hybrid finite elements for 3-D global/local analysis of laminated composite structures
The purpose of this work is to develop global/local finite element models using partial hybrid stress finite elements for stress analysis of laminated composite structures. Based on the composite variational principle, the general formulations of partial hybrid single-layer finite element and …
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Análise global-local de "risers" flexíveis
An unified numerical tool for a global-local analysis of the structure mechanical behaviour of multi-layered flexible risers intended for offshore oil explotation is presented. A quasi-static geometric nonlinear analysis of the planar behaviour of these componentes is carried out for operational …
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Optimal design of geodesically stiffened composite cylindrical shells
… shells are identified. An approach to include local stress concentrations during the design optimization process is then presented. The method is based on a global/local analysis technique. It employs spline interpolation functions to determine displacements and rotations from a global model …
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Performance Of Interface Elements In The Finite Element Method
… The interface elements are especially useful in global/local analysis, where a region with a dense mesh interfaces to a region with a less dense mesh. Interface elements are used to help avoid using special transition elements between two meshed regions. This is desirable since the transition …
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A three dimensional generalized finite element method for thin fibers embedded in a continuum
… Generalized Finite Element Method (GFEM) using global-local enrichment functions (GFEM^{gl}) to overcome these limitations. The methodology is verified by comparing the solution to specific linear elastic problems obtained by using GFEM^{gl} against solutions from the traditional FEM approach. …
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Analysis of Three-Dimensional Fracture Mechanics Problems: A Non-Intrusive Approach Using ABAQUS and a Generalized Finite Element Method
… so-called generalized finite element method with global-local enrichment functions (GFEM g-l ) can be implemented non-intrusively in existing closed-source FEM software as an add-on module. The GFEM g-l is based on the solution of interdependent global (structural) and local (crack) scale …
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Generalized finite element methods for multiscale structural dynamics and wave propagation
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01
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Multidisciplinary Optimization and Damage Tolerance of Stiffened Structures
… optimization procedure into two subsystems: the global wing optimization which optimizes the geometry of spars, ribs and wing skins; and the local panel optimization which optimizes the design variables of local panels bordered by spars and ribs. The stiffeners are placed on the local panels to …
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Improved conditioning and accuracy of a two-scale generalized finite element method for fracture mechanics
… relevance in computational mechanics involve analysis of structural behavior spanning different spatial scales. Examples of such industrial problems include fracture in engine components, structural members of aircrafts, and pipeline joints. The presence of small cracks can lead to failure of …