کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
514287 866722 2008 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
FEM subsystem replacement techniques for strength problems in variable geometry trusses
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
FEM subsystem replacement techniques for strength problems in variable geometry trusses
چکیده انگلیسی

This work presents the application of a procedure for replacing FEM subsystems with a high number of dofs (possibility of including mobile internal parts) using equivalent parametric macroelements (EPMs) with a much reduced number of elements to decrease significantly the analysis time with an acceptable error. This procedure is applied to the replacement of variable geometry truss (VGT) mobile joints. The equivalence criterion proposed is based on elastic strain energies absorbed by both bodies. Said replacement involves resolution of a redundant nonlinear equation system, iteratively focused via linearization and subsequent resolution via the least squares method. The search for initial approximation is supported by genetic algorithm techniques.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Finite Elements in Analysis and Design - Volume 44, Issues 6–7, April 2008, Pages 346–357
نویسندگان
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