Nonlinear delamination buckling and expansion of functionally graded laminated piezoelectric composite shells

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:51

Article

Yang, W. D.¹  Zhang, W.^1,2  Wang, X.¹  Lu, G.² 

[1] Shanghai Jiao Tong Univ, Sch Naval Architecture Ocean & Civil Engn, State Key Lab Ocean Engn, Shanghai 200240, Peoples R China

[2] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

关键词: Functionally graded composite shells;    Piezoelectric layer;    De laminated buckling;    Electric field;    Thermal loading;   

DOI  :  10.1016/j.ijsolstr.2013.11.017

来源: Elsevier

【 摘 要 】

In this paper, an analytical method is presented to investigate the nonlinear buckling and expansion behaviors of local delaminations near the surface of functionally graded laminated piezoelectric composite shells subjected to the thermal, electrical and mechanical loads, where the mid-plane nonlinear geometrical relation of delaminations is considered. In examples, the effects of thermal loading, electric field strength, the stacking patterns of functionally graded laminated piezoelectric composite shells and the patterns of delaminations on the critical axial loading of locally delaminated buckling are described and discussed. Finally, the possible growth directions of local buckling for delaminated sub-shells are described by calculating the expanding forces along the length and short axis of the delaminated subshells. (C) 2013 Elsevier Ltd. All rights reserved.

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