Recently, the nonlocal elasticity theories have been used in studying the different behaviors of micro/nanostructures. However, there is a complicity in applying the natural boundary conditions in the context of the nonlocal differential elasticity models. Also, the nonlocal integral elasticity could provide a suitable remedy for this type of problems but with paying highly computational efforts.
In the present paper, for linear elastic materials, effects of couple stresses on micro/nanosolids are physically discussed and mathematically represented in the context of the classical, the modified and the consistent couple–stress theories. Then, an evaluation is provided showing the validity and the limit of applicability of each one of these theories. At first, the possible couple stress effects on mechanics of particles and on continuum mechanics are represented.
Hello there!
I was thinking to use inverse distance interpolation technique as a finite element shape function. However, I am not sure about its performance for finite element method, inverse distance interpolation was originally developed for geographic information system.
can anyone help me please?
thanks in advance!
I am tryring to link Abaqus 6.14-1 with Microsoft Visual Studio 12.0 (2013) and Composer XE 2013 SP1 (Update 1) (complier version 14) based on some instrcutions mentioned in following links:
http://www.researchgate.net/post/how_can_i_link_the_abaqus64-bit_and_fortran
Dear Colleagues:
I thought the following recent paper by Prof. Neff may be of interest to some of you.
http://arxiv.org/abs/1505.02203
This paper discusses the natural appearance of the Hencky-logarithmic strain tensor together with the Hencky strain energy, which can be motivated from some purely geometrical (kinematical) arguments based on the geodesic distance on the general linear group of all invertible tensors GL(n).
Silicon devices are ubiquitous in many micro- and nano-scale technological applications, most notably microelectronics and microelectromechanical systems (MEMS). Despite their widespread usage, however, issues related to uncertain mechanical reliability remain a major factor inhibiting the further advancement of device commercialization. In particular, reliability issues related to the fracture of MEMS components have become increasingly important given continued reductions in critical feature sizes coupled with recent escalations in both MEMS device actuation forces and harsh u
I want to do optimisation in Matlab by linking it to Ansys.
I need to get my graph from Ansys in each itteration and import the graph in Matlab in order to compare with experimental results and get new coefficients. These coefficients again needs to import in Ansys file.
I could manage to do it with smaller size file (with less degree of freedom), but when it comes to complicated geometry with more nodes and elements number, I got liscence problem. It looks like there is a limitation in running when you call Ansys from Matlab.
Herein, we develop capacitive type strain sensors composed of the CNTs-PDMS nanocomposite thin films as electrodes and PDMS dielectric layer. The strain sensing performances of the strain sensors made of the flat and wavy structured electrodes are compared. Both types of strain sensors can measure strains up to 100%. We found that wavy structured based strain sensors possess higher sensitivity with quite stable and reliable responses due to the resistance stability and very low resistance standard deviation of the wavy structured electrodes.
Silver nanowire (Ag NW) based transparent electrodes are inherently unstable to moist and chemically reactive environment. A remarkable stability improvement of the Ag NW network film against oxidizing and sulfurizing environment by local electrodeposition of Ni along Ag NWs is reported. The optical transmittance and electrical resistance of the Ni deposited Ag NW network film can be easily controlled by adjusting the morphology and thickness of the Ni shell layer.
