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I define the interface between the reinforcement and the concrete, then i added fraction and give the fraction coefficient. However without vetical force, the fraction coefficient is useless. I also define the shear limit which brings no improvement too. So i give up this solution.

modeling adhesive in ANSYS

Submitted by aidin.ghaznavi on Sat, 11/21/2009 - 09:15

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i am studying adhesive joints of sandwich panel.I used contact elemet in ANSYS software to modeling adhesive but my solution did not converge.I used smaller elements and increased the number of susteps, but they could not help me. do you know what the problem is?

thanks in advance,

Best Regards

Aidin Ghaznavi

Bridging the gap with a "stepping stone" for more solar energy

Submitted by Zhenyu Zhang on Thu, 11/19/2009 - 05:32

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Converting the abundant energy from the sun into a form convenient for human use has been a long standing dream for sustainable generation of environmentally clean energy. With the seminal discovery of water splitting by Fujishima and Honda in the early 1970s [1], titanium dioxide (TiO2), an inexpensive white pigment widely used in our daily life, emerged as the premier photocatalysts for enabling solar energy utilization. However, because of its wide intrinsic band gap, TiO2 can absorb only ultraviolet light. This results in less than 1% efficiency for solar energy conversion. Reducing the band gap of TiO2 is the main avenue for boosting the conversion efficiency. In a recent paper to appear in Phys Rev. Lett. [2], Zhu et

Effective strain range

Submitted by Sushanta on Thu, 11/19/2009 - 05:17

research

HI everyone

I am doing research using Sih's strain energy density concept for predicting fatigue failure in asphalt pavements. I am pretty new in this area and got stuck while reading some papers. Anybody has some idea how to predict the effective strain range near the crack tip.

ΔE= A/Rj∫ΔEeff dr

and

how to get the constant A and β.

regards

sushanta bhusal

Contact Analysis using Abaqus 6.9

Submitted by iyousuf on Wed, 11/18/2009 - 09:13

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Using Ansys for Impact in composite

Dear All

Currently I am working as a researcher and there is a new project on which i need some help. I have to do a contact analysis between two bodies initially and than move to low speed impact betrween two composite materials. I have just started using Abaqus and not very familiar with it. I have although completed some very basic application like cantilver beam and stress analysis, but struggling to complete a contact analysis between two bodies in a simple 2D problem.

Impact of cellular materials

Submitted by Henry Tan on Tue, 11/17/2009 - 18:23

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impact

cellular materials

As the title suggests, there are two focuses of this discussion theme: impact and cellular materials.

Impact protection can be very practical problems in safety, fires and explosions, oil and gas industry, subsea structures, car manufacturing, nuclear industry, rocket space engineering, etc.

Cohesive behaviour for Interaction in Abaqus Explicit at the interface of materials

Submitted by Venkat Bharath on Tue, 11/17/2009 - 11:27

Hi,

I am working on effects of Blast Loading in sandwich composites using Abaqus. I want to incorporate Cohesive behaviour at the interface of the two materials in the sandwich composite structure i am analysing.

crack initiation simulation with FEM

Submitted by YangTan on Tue, 11/17/2009 - 10:02

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hello.all.

i want to simulate the the crack initiation, but i don't know

(1)what criterion should i use for crack initiation.

(2)how to deal with the mesh(unlike other fracture model, there is no crack defined in advance in the mesh).

the material i use is structual steels.

could anyone give me some advice?

thanks.

best regards

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