Additional constraints may soften a non-conservative structural system: Buckling and vibration analysis

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:50

Article

Lerbet, J.¹  Kirillov, O.²  Aldowaji, M.¹  Challamel, N.³  Nicot, F.⁴  Darve, F.⁵ 

[1] UFRST UEVE, IBISC, F-91020 Evry Courcouronnes, France

[2] Helmholtz Zentrum Dresden Rossendorf, D-01314 Dresden, Germany

[3] Univ Europeenne Bretagne, Univ Bretagne S, LIMATB, Ctr Rech, F-56321 Lorient, France

[4] Irstea, ETNA, Geomech Grp, F-38042 St Martin Dheres, France

[5] UJF INPG CNRS, Lab Sols Solides Struct, F-38041 Grenoble 9, France

关键词: Stability;    Vibrations;    Non-conservative problems;    Constrained systems;    Second-order work criterion;   

DOI  :  10.1016/j.ijsolstr.2012.09.014

来源: Elsevier

【 摘 要 】

The effect of additional kinematic constraints on eigenfrequencies of non conservative systems presenting a non symmetric stiffness matrix is investigated with the use of the second order work criterion. It is shown that there are always additional constraints that may soften structural systems, from both buckling and vibration points of view. The steps for building such constraints are given, consequences on stability are discussed and several illustrating examples are presented. (C) 2012 Elsevier Ltd. All rights reserved.

【 授权许可】

Free