In this article, based on the Euler-Bernoulli beam theory, the large-amplitude vibration of multiwalled carbon nanotubes embedded in an elastic medium is investigated. The method of incremental harmonic balance is implemented to solve the set of governing nonlinear equations coupled via the van der Waals (vdW) interlayer force. The influences of number of tube walls, the elastic medium, nanotub...

the high blood rate that often occurs in arteries may play a role in artery failure and tortuosity which leads to blackouts, transitory ischemic attacks and other diseases. however, vibration and instability analysis of carotid arteries are lacking. the objective of this study is to investigate the vibration and instability of the carotid arteries conveying blood under axial tension with surrou...

This paper gives two versions of elastic screen method The wide angle version has a better accuracy while the small angle approximation is more e cient The accu racy of the re ectivity is discussed by comparing the analytical results from the screen method and those directly from plane wave re ections The accuracy of waveform is checked by comparing synthetic seis mograms from both screen metho...

We study theoretical aspects of step fluctuations on vicinal surfaces by adding conservative white noise to the Burton-Cabrera-Frank model in one spatial dimension. We consider material deposition from above, as well as entropic and elastic-dipole step repulsions. Two approaches are discussed: (i) the linearization of stochastic equations when fluctuations are small, which captures correlations...

Cracks cause to change dynamic response of beams and make discontinuity in slope of the deflection of the beams. The dynamic analysis of the Euler-Bernoulli cracked beam on the elastic foundation subjected to the concentrated load is presented in this paper. The stiffness of the elastic foundation and elastic supports influence on vibrational characteristics of the cracked beam. The Dynamic Gre...

-In this paper, a novel model of 3D elastic mesh is presented for image segmentation. The model is inspired by stress and strain in physical elastic objects, while the repulsive force and elastic force in the model are defined slightly different from the physical force to suit the segmentation problem well. The self-balancing mechanism in the model guarantees the stability of the method in segm...

In this paper a new method for elastic registration of medical images is presented. The method uses corresponding regions of gray values, which are segmented interactively. The deformation part is based on finite element meshes generated from the segmented regions. During the deformation process, the similarity between the deformed mesh and the target image is measured and the ‘intensity’ of th...

The behavior a pneumatic tire is analyzed and simulated using a finite element model. We calculate the elastic deformations in the contact area of a pneumatic tire touching the street for different friction conditions between tire and street. The simulations are compared with the experimental results. The comparison demonstrates that the overall deformation as well as the frictional behavior in...

In this paper, an analytical formula to calculate the radial stiffness of groove elastic support is presented. The influence of structure parameters on radial stiffness and homogeneity of radial stiffness is investigated as well. The accuracy and calculating speed of the analysis formula are compared to that of finite element method (FEM). Findings are as following: The calculating speed of ana...