This studentship has now been filled, but there may be further similar studentships to follow.

 --------------------------------------

TECHNOLOGY LEADER (CENTRE DIRECTOR) 

Competence Centre for Composite Materials 

A Competence Centre for composite materials research is to be established at UL, with support from Enterprise Ireland and IDA Ireland. The Centre will conduct innovative, high quality research in the use of composite materials with direct relevance to industry.  Applications are invited for the position of Technology Leader (Centre Director) 

hi all,

can anyone explain about the following basic questions

1. me the difference between the proportional limit and elastic limit.

   Please dont give the definitions of both, i need some detailed explaination.

 2. How many natural frequency a object can have?

Regards

sagar

The research on stretchable and twistable electronics by Yonggang Huang at Northwestern University and John A. Rogers at the University of Illinois at Urbana- Champaign has been featured on the cover of the NSF Budget Request to the United States Congress for the fiscal year 2011.

Details available at http://www.nsf.gov/about/budget/fy2011/cover_caption.jsp

I am refering to the book - Mechanics of Materials by Beer, Johnston and DeWolf (McGraw-Hill) topic 8.2.

When we design a wide-flange beam, we must consider two conditions. First, the shear stress at the maximum shear section must not exceed the allowable shear stress. Second, the principal stress at the junction of the web and the flange at the section of the maximum moment must also be compared to the allowable normal stress. This is straightforward and clear to me.

I want to find the material damping of polymer material through ansys, Is it possible to find the damping of a material damping by using ansys. In the experimental work the polymer material  perspex is used in which 9 layers of perspex material are mounted on milling machine bed and machining is done along with work piece material to reduce the vibration and to found out the damping. How this can be analysed in ansys and which models can be used for this. Many layers are stacked one upon the other and damping has to be found out.How this modelling can be done.