Localized Buckling as Statical Homoclinic Soliton and Spacial Complexity

1990 ◽  
pp. 67-74 ◽  
Author(s):  
M. S. El Naschie ◽  
S. Al Athel ◽  
A. C. Walker
Keyword(s):  
Localized Buckling

Interactively Induced Localized Buckling in Sandwich Structures With Core Orthotropy

1998 ◽  
Vol 65 (2) ◽  
pp. 523-528 ◽  
Author(s):  
M. Ahmer Wadee ◽  
G. W. Hunt
Keyword(s):  
Recent Work ◽  
Material Properties ◽  
Sandwich Structures ◽  
Interactive Effect ◽  
Localized Modes ◽  
Buckling Behavior ◽  
Post Buckling ◽  
Interactive Buckling ◽  
Core Materials ◽  
Localized Buckling

Recent work on the interactive buckling behavior of compressed sandwich structures (Hunt and Wadee, 1998) is extended to orthotropic core materials. The variation of the material properties can tend to maximize the interactive effect such that overall and secondary localized modes are triggered almost simultaneously, giving rise to highly unstable post-buckling behavior in systems of practical dimensions.

Cylindrical Shells with Tunable Postbuckling Features Through Non-Uniform Patterned Thickening Patches

2018 ◽  
Vol 18 (02) ◽  
pp. 1850026 ◽  
Author(s):  
Nan Hu ◽  
Rigoberto Burgueño
Keyword(s):  
3D Printing ◽  
Cylindrical Shells ◽  
Response Type ◽  
Uniform Thickness ◽  
Novel Materials ◽  
Design Materials ◽  
And Control ◽  
Localized Buckling

The research reported herein follows the increased interest in buckling-induced functionality for novel materials and devices with a focus on cylindrical shells as a suitable structural prototype. The paper proposes the concept of using patterned thickening patches on the surface of cylindrical shells to modify and control their elastic postbuckling response. Cylindrical shells with non-uniform thickness distributions (NTD) were fabricated through 3D printing to understand rules for pattern designs and then tested under loading-unloading cycles. Strategic thickening patches act as governing imperfections that modify the response type, the number, the location and the sequence of the localized buckling events. The use of patterned thickening patches and their layout provides diverse design opportunities for a desired elastic postbuckling response and can be potentially used in design materials and structures with switchable functionalities.

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