Blog posts
back stress
hello everybody
i want to know what is the meaning of back stress and its effect on drucker prager yield criterion for viscoelasticity materials
thank you
Research Assistant Professor (Computational Biomechanics); The University of Western Australia
RESEARCH ASSISTANT PROFESSOR (Computational Biomechanics) (REF: 3096)
· 3 year appointment
DPD method reviews
Hello to all
if anybody can know any usefull book and review or any other comprehensive sources for learning dissipative particle hydrodynamics please introduce here. by the way is any pre writen codes availabe ?
best regards
Mechanical Properties of Silicon Nanowires
In this paper that was published a few months ago, we reported the size effects on the elastic modulus and fracture strength of silicon nanowires. In addition, we observed that the silicon nanowires are linear elastic until fracture with a very large fracture strain up to 12%.
Y. Zhu, F. Xu, Q. Qin, W. Y. Fung, and W. Lu, Nano Letters 9, 3934-3939, 2009
Abstract:
Fracture toughness of wood in mode II
Hi everybody,
I have done some experiments on the fracture toughness in mode II of wood specimens using attached geometry;so using
formula KIIc= 5.11P(3.1415*a)^0.5 /(2BW) I was able to calculate the frcature toughness of wood, but I am quite suprised
why this equation does not iclude depth of the specimens and moreover, I think that I have obtained higher values for the
fracture toughnes values. Is there any other formulation for obtaining the fracture toughness in mode II for this specimen?
P.s. dimension of my specimens is 100*100*63mm
Estimating Terminal Velocity of Rough Cracks
In this paper we first obtain the order of stress singularity for a dynamically propagating self-affine fractal crack. We then show that there is always an upper bound to roughness, i.e. a propagating fractal crack reaches a terminal roughness. We then study the phenomenon of reaching a terminal velocity. Assuming that propagation of a fractal crack is discrete, we predict its terminal velocity using an asymptotic energy balance argument. In particular, we show that the limiting crack speed is a material-dependent fraction of the corresponding Rayleigh wave speed.
simulation under Abaqus (job) with program fortran
Hello,
I wanted to simulate a piece on Abaqus while using a written subroutine under fortran and I am has the research of a method to follow to make a test
thank you has the advance
cordially
U. S. National Congress on Theoretical and Applied Mechanics
The U. S. National Congress on Theoretical and Applied Mechanics will be held at Penn State, from 27 June to 2 July, 2010.
Deadline for early registration: 31 March 2010
For more information see http://www.conferencetoolbox.org/USNCTAM2010/
What we call Robust Design Optimization (IOSO RDO Application example)
Nowadays there are many technologies that people call Robust Design Optimization. Among them one can encounter for example such popular methods like six-sigma. But despite the absence of common terminology for RDO, one can agree that methods and technologies like six-sigma may be called as sensitivity analysis other than Robust Design Optimization. Real-life RDO technologies could be classified by the deepness and thoroughness of the development of their theory and their practical realization.