scholarly journals Micro-/nanosized cantilever beams and mass sensors under applied axial tensile/compressive force vibrating in vacuum and viscous fluid

AIP Advances ◽  
2015 ◽  
Vol 5 (11) ◽  
pp. 117140 ◽  
Author(s):  
Ivo Stachiv ◽  
Te-Hua Fang ◽  
Tao-Hsing Chen
Keyword(s):  
Viscous Fluid ◽  
Compressive Force ◽  
Cantilever Beams ◽  
Mass Sensors ◽  
Axial Tensile

scholarly journals Size Dependent Dynamics of Cantilever Beams Immersed in Viscous Fluid

2009 ◽  
Vol 15 (S2) ◽  
pp. 1134-1135
Author(s):  
W Fei ◽  
Z Xuezeng
Keyword(s):  
Viscous Fluid ◽  
Cantilever Beams ◽  
Size Dependent

Extended abstract of a paper presented at Microscopy and Microanalysis 2009 in Richmond, Virginia, USA, July 26 – July 30, 2009

Folding instability of a layered viscoelastic medium under compression

1957 ◽  
Vol 242 (1231) ◽  
pp. 444-454 ◽  
Keyword(s):  
Viscous Fluid ◽  
Relaxation Times ◽  
Compressive Force ◽  
Viscoelastic Layer ◽  
Viscous Layer ◽  
Finite Rate ◽  
Direction Parallel ◽  
Special Cases ◽  
Layered Viscoelastic Medium ◽  
The Stability

A preliminary theory is established for the stability of a viscoelastic layer sandwiched in an infinitely extended medium of another viscoelastic material when a compressive force is acting in a direction parallel with the layer. The instability is manifested by a folding of the layer. It is shown that in general there exists a lower and a higher critical load between which folding occurs at a finite rate with a dominant wavelength. This is the wavelength whose amplitude increases at the fastest rate. Special cases are also discussed in more detail such as that of a purely viscous layer in a viscous fluid, an elastic layer in a viscous fluid, a viscous layer in an elastic medium, and of two Maxwell materials. Results indicate that the ratio of the relaxation times of the two materials is an important parameter.

Experimental Setup for Full-Scale Testing of Pipes Under Combined Loads

2006 ◽  
Author(s):  
Istemi F. Ozkan ◽  
Magdi Mohareb
Keyword(s):  
Internal Pressure ◽  
Tensile Force ◽  
Compressive Force ◽  
Full Scale ◽  
Experimental Setup ◽  
Combined Loads ◽  
Axial Tensile ◽  
Deformational Behavior ◽  
Combined Action ◽  
The University

A versatile experimental setup was recently built at the University of Ottawa Structural Laboratory with the capability of testing full-scale pipes under load combinations involving axial tensile/compressive force, twist, shear, internal pressure, and imposed bending deformations. This paper presents the innovative aspects of the new experimental setup and documents some aspects of the deformational behavior of pipe specimen of X65 material, 20 in. OD with a diameter to thickness ratio of 80, under the combined action of internal pressure, axial tensile force, torsion, and imposed curvature, which was recently conducted under the new setup. The results reported are part of a testing program, which is currently underway.

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