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Shear waves, medecine and brain

Submitted by tlaverne on Fri, 06/08/2012 - 09:16

Usually ultrasound equipment in medicine only use compressional waves.
But since human tissues have a high bulk modulus, the P-wave speed is
relatively constant (around 1580 m/s). Human tissues are very stiff if
you apply isotropic constraints on them (like pressure of water).
However M. Fink and his colleagues proposed a new way to investigate
human tissues by first sending a strong compressional wave in the tissue
that is able to make ripples in the body, then shear wave are produced

Analyzing a 2D Truss With abaqus - Problem with forces at each element

Submitted by farhang_760 on Fri, 06/08/2012 - 07:27

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Question about the meshfree analysis when two types of materials coexist in the background cell

Submitted by bahamute on Fri, 06/08/2012 - 03:04

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Hi, everyone!

I will employ the meshfree method in order to analyze the composite model including the spherical filler and matrix.

However, if the background cells are regular reluctantly, there will be background cells where two types of materials coexist.

In this case, I don't know how to calculate the integral form, K=int_V B'CB dV, numerically.

apply a seismic load in abaqus

Submitted by mohamadzare on Thu, 06/07/2012 - 15:24

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i want to model a single pile whith surrounding soil in abaqus. my problem is about:

1)step mudulus: how i must define step mudulus to obtain a time history and spectral(frequency) displacement response.

2)how i can apply elcentro spectrum in abaqus. i dont know nothing about this.

thanks

Use of ABAQUS 6.10

Submitted by Chinmaya on Thu, 06/07/2012 - 06:48

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steel fibre reinforced slab

Dear All,

Good Morning.

I want to model a steel fibre reinforced R.C square slab under Impact force.

Can I get the suitable steps for using ABAQUS 6.10 to analyse and findout the ultimate stress,strain,displacements?

Calculating BMD for a hollow pipe beam

Submitted by nickg on Wed, 06/06/2012 - 20:22

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beams

I have tested steel pipe (as a beam) under lateral distributed loads. Longitudenal strain gages are on the top and bottom lines of the pipe. Could any one suggest to me how can I derive the bending moment distribution along the pipe. I have E, I , t (thickness, and r(radius) for the pipe.

I have found a formula from litrature as follows : M = K.E.I

Where K = curvature = 0.5 * (ε_tension side - ε_compression side) / C (i.e the Half Section Depth, or pipe radius)

Mathematical Modeling and Computational Simulation of Bio/Nano/Micro Systems

Submitted by Mahdi Moghimi Zand on Wed, 06/06/2012 - 16:02

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This year the International Conference of Numerical Analysis
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