Adjoint approach sensitivity analysis of thinâ€walled beams and frames

Sensitivity analysis of beams and frames assembled of thinâ€walled members is presented within the adjoint approach. Static loads and structures composed of thinâ€walled members with the bisymmetrical open crossâ€section are considered. The analysed structure is represented by the oneâ€dimensional...

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Bibliographic Details
Main Authors: Ireneusz Kreja, Tomasz Mikulski, Czeslaw Szymczak
Format: Article
Language:English
Published: Vilnius Gediminas Technical University 2005-03-01
Series:Journal of Civil Engineering and Management
Subjects:
Online Access:http://localhost/journals.vgtu.lt/index.php/JCEM/article/view/8893
Description
Summary:Sensitivity analysis of beams and frames assembled of thinâ€walled members is presented within the adjoint approach. Static loads and structures composed of thinâ€walled members with the bisymmetrical open crossâ€section are considered. The analysed structure is represented by the oneâ€dimensional model consisting of thinâ€walled beam elements based on the classical assumptions of the theory of thinâ€walled beams of nonâ€deformable crossâ€section together with superelements applied in place of location of structure nodes, restraints and stiffeners. The results of sensitivity analysis, obtained for the structure model described above, are compared with the results of the detailed FEM model, where the whole structure is discretised with the use of QUAD4 shell elements of the system MSC/NASTRAN. Plonasienių sijų ir rÄ—mų jautrumo analizÄ— taikant greitinimo metodÄ… Santrauka Pateikiama sijų ir rÄ—mų, sukomponuotų iÅ¡ plonasienių elementų, jautrumo analizÄ— taikant gretinimo metodÄ…. NagrinÄ—jamos statinÄ—s apkrovos ir konstrukcijos, sumodeliuotos plonasieniais dviejų aÅ¡ių atžvilgiu simetriniais atviro kontÅ«ro elementais. NagrinÄ—jama konstrukcija yra modeliuojama taikant vienmatį modelį. Šį modelį sudaro plonasieniai sijiniai elementai, kuriems apraÅ¡yti taikomos klasikinÄ—s nedeformuojamo skerspjÅ«vio prielaidos bei superelementai, naudojami konstrukcijų mazguose standumo briaunų ir kitų suvaržymų vietose. ApraÅ¡ytu bÅ«du sumodeliuotai konstrukcijai gauti jautrumo analizÄ—s rezultatai palyginti su rezultatais, gautais naudojant detalų BEM modelį, taikant programos MSC/NASTRAN kevalinius QUADA tipo elementus. Raktiniai žodžiai: plonasienÄ—s konstrukcijos, sijos, rÄ—mai, standumo briaunos, jautrumo analizÄ— First Published Online: 14 Oct 2010
ISSN:1392-3730
1822-3605