نتایج جستجو برای: nonlinear axial strain

تعداد نتایج: 478556  

Journal: :Bio-medical materials and engineering 2014
Zhiwen Zhu Wendi Zhang Jia Xu

A kind of shape memory alloy (SMA) hysteretic nonlinear model is developed, and the stochastic bifurcation characteristics of SMA intravascular stents subjected to radial and axial excitations are studied in this paper. A new nonlinear differential item is introduced to interpret the hysteretic phenomena of SMA strain-stress curves, and the dynamic model of SMA intravascular stent subjected to ...

2007
J. M. Lopez

Abst rac t . Recent experiments (Weisberg, Kevrekidis & Smits 1997) have demonstrated that the centrifugal instability leading to Taylor vortex flow can be controlled by harmonic oscillations of the inner cylinder in the axial direction. Marques & Lopez (1997) used linear Floquet analysis to study the control of the instability for the flow between two infinite length co-axial cylinders. Howeve...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 1984

Journal: :Journal of Constructional Steel Research 2021

To provide qualitative database for further studies regarding the evaluation of cyclic deformation capacities 400 N/mm2 class structural steel up to maximum strength as well complete fracture, strain-based loading tests were performed in low and extremely low-cycle fatigue regimes. Thirty-nine specimens employed tested with strain amplitudes range from ±2% ±12%. By using three different specime...

Journal: :Journal of Statistical Mechanics: Theory and Experiment 2016

2004
Yoshitaka Umeno Takayuki Kitamura Akihiro Kushima

Carbon nanotubes (CNTs) have been attracting attention because of their characteristic mechanical and electronic properties. It has been pointed out that a single-walled CNT can stretch in the axial direction at 30% strain without any bonds breaking. Therefore, it is of interest to investigate electronic properties of CNTs under high axial strain. In this study, we investigate the change in ele...

Journal: :Ultrasound in medicine & biology 2004
S Srinivasan J Ophir S K Alam

Conventional techniques in elastography estimate the axial strain as the gradient of the displacement (time-delay) estimates obtained using cross-correlation of pre- and temporally stretched postcompression radiofrequency (RF) A-line segments. The use of a constant stretch factor for stretching the postcompression A-line is not adequate in the presence of heterogeneous targets that are commonly...

ژورنال: مهندسی دریا 2014

In this study, Homotopy analysis method is employed for nonlinear vibrational analysis of marine riser subjected to variable axial loads. Mid-plane stretching effect has been considered in the model. Galerkin's decomposition technique is used to convert the Partial differential equation of the motion to nonlinear ordinary differential equation. Homotopy analysis method (HAM) is applied to find ...

2017
D B MacManus M D Gilchrist J G Murphy

Indentation is a primary tool in the investigation of the mechanical properties of very soft tissue such as the brain. However, the usual material characterization protocols are not applicable because the resulting deformation is inhomogeneous, with even the identification of the amount of strain ambiguous and uncertain. Focusing on spherical indentation only, a standard is needed to quantify t...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید