Global ETD Search
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Showing 1 to 5 of 5 for “"global/local approach"”.
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Development of a Global/Local Approach and a Geometrically Non-linear Local Panel Analysis for Structural Design
… with this effort, a new method for performing global/local design optimization of large complex structures (such as aircraft wings or fuselages) was developed. A simple and flexible interface between the global and local design levels was constructed using response surface methodology. The …
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Evaluation of efficiency of partial hybrid finite element method using composite laminates with crack
The efficiency of the global/local approach using partial hybrid finite elements is examined by the determination of interlaminar stress fields around interior delamination crack tips in composite laminates subjected to out-of-plane loading. The stress field consisting of both in-plane and …
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Thermomechanical and Vibration Analysis of Stiffened Unitized Structures and Threaded Fasteners
… cutouts. The former problem was analyzed using a global/local approach using the commercial finite element software 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 …
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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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Buckling, Flutter, and Postbuckling Optimization of Composite Structures
… into many smaller independent/semi-independent local design problems. For example, the wing structure design problem is decomposed into several local panel design problem. The use of composite necessitates the inclusion of ply angles as design variables. These design variables are discrete in …