Fatigue and Creep Failure Models for Variable Amplitude Loading Programs
A new section on fatigue and creep rupture has been added to the website: http://www.FailureCriteria.com.
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lamb wave simulation
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Hi,
I am trying to simulate lamb wave propagation in steel plates using Ansys. I am completely new to this and would really appreciate any guidance with regards to examples or tutorials, speicifically for this problem. I know and am using the general tutorials out there. Thanks in advance for your help.
Haroon
schmid factor in the single plasticity code of Huang
Hello
In the code of Prof.Huang, the schmid factor was defined.
For slip deformation tensors
slpdef4=s1m2+s2m1
slpdef5=s1m3+s3m1
slpdef6=s2m3+s3m2
For slip spin tensors
slpspn4=(s1m2+s2m1)/2
slpspn5=(s1m3+s3m1)/2
slpspn6=(s2m3+s3m2)/2
I can't understand the difference of 1/2. Please give me some explanations.
thanks
wang
Boundary conditions in corner nodes
Hello Dear
I have a problem about informing boundary conditions of a CFFF plate. How can I inform the boundary conditions of corner nodes?
With best wishes
The comparison between practical measurement and simulation model results
Under the practical manufacturing process, metal parts will deform according the loads exerted on them. I did some practical measurement on the mentioned metal parts before and after the deformation.e.g.Heat treatment, the metal parts could be expanded or screwed.The postions I used to measure the dimension of the metal part could not be traced.Simply to use the difference of the widths at some specific positions, for example, has non-sense to indicate the deformation of the metal parts.On the other hand, I could use Catia to simulate some deformations of the metal parts.
a strange question about the Euler beam buckling?
I have a beam whose two ends are roller condition which means one end is zero moment and zero displacement and the other end is zero moment but can have the displacement only along the beam axis. Then the compression force is applied on this end along the beam axis.
Euler's buckling formula
Hi, everyone,
I am new here. Now I am doing a research which is related to the Euler's buckling formula. It is known that when the cylinder is thick enough, Euler's buckling formula is no longer valid. I want to know in which region of slenderness(aspect ratio) of a cylinder or column that the Euler's buckling formula is valid. Is there any analytical study or numerical results about it? Is there any suggestion or paper I can find?
Thank you very much!
A Discrete Cohesive Model for Fractal Cracks
The fractal crack model described here incorporates the essential
features of the fractal view of fracture, the basic concepts of
the LEFM model, the concepts contained within the
Barenblatt-Dugdale cohesive crack model and the quantized
(discrete or finite) fracture mechanics assumptions. The
well-known entities such as the stress intensity factor and the
Barenblatt cohesion modulus, which is a measure of material
toughness, have been re-defined to accommodate the fractal view of
fracture.
Researchers Make New Electronics – With A Twist
PNAS 105, 18675 (2008)
Dae-Hyeong Kim et al from Prof. Rogers’ group (University of Illinois), Prof. Jizhou Song (University of Miami), Prof. Yonggang Huang (Northwestern University), and their collaborators at IHPC in Singapore and Tsinghua University just published a paper as the featured cover article in PNAS.
Online submission system for International Journal of Applied Mechanics (IJAM) is now LIVE
World Scientific is proud to announce the launch of a new online submission system, Editorial Manager (EM), for International Journal of Applied Mechanics (IJAM). One of the industry standard systems used by major academic publishers, EM provides a full online solution for manuscript submission, peer-review, and tracking.