Hello everyone!
I'm interested in branching of Mode II propagating crack, mostly in high Cr steels, but any info may be useful and interesting. Does it tend to branch? What are the criteria? Velocity? Angle of branching?
Thanks,
Marina
Dear All:
I have a structural problem which deals with "Buckling" analysis of a boom with a rectangular cross-sectional area
and 0.25 in. thickness.
Can I use brick element (8 nodes) instead of shell element to simulate buckling of this type of structure?
Thank you for your insight.
David.
Gordon Conference 2010Thin Film & Small Scale Mechanical Behavior
July 25-30, 2010, Colby College, Waterville, ME
Chair: Oliver Kraft (oliver.kraft [at] kit.edu), Vice Chair: John Balk
Forthcoming papers of International Journal of Applied Mechanics (IJAM) Vol.2 No.1:
1．“An Alternative Explanation of The Effect of Humidity In Gecko Adhesion: Stiffness Reduction Enhances Adhesion on A Rough Surface”, Bin Chen (McMaster University, Canada) and Huajian Gao (Brown University, USA).
HI,
i am looking into strain field measurement for coupon tension tests for the purpose of correlation to fea results . a collegue told me that there is an open source project
which calculates strain field from camera images. does anybody know something about it?
Cheers,
schuffe
In all textbooks, when iteration methods are introduced, the iterative formula is always H(x)x+f=0, where f is the external force applied on the system. All methods are stated when f is fixed.
Recently, I find that definitions of secant stiffness and tangent stiffness in many books seem pretty confused.Therefore, here I am giving the definitions I think correct, then give my questions on them.
Consider the equation
H(x)x+f=0
(1) Definition of tangent stiffness. As for the above equation, what is the tangent stiffness for some particular value x0?
Let's give the definition according basic knowledge of advanced mathematics. Let's consider the curve H(x)x~x. For this curve, y=H(x)x, so the tangent at x0 is
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