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I was going through these papers:

1.P.K. Sarkar and S.K. Maiti, 'Prediction of mode-1 fracture toughness of unidirectional fibre composites with arbitrary crack fibre orientation from its lowest or matrix fracture toughness'. int. J. Fracture, vol. 40. pp. R91-R96, (1989).

2.S.K. Maiti and P.K. Sarkar, 'A method of calculation of total strain energy release rate and its layer-wise distribution for an arbitrary through the thickness crack extension in a composite laminate', Engg. Fracture Mechanics, vol. 36, pp. 639-646,(1990).

i am using Deform 3D for my analysis but wats the problem in this software i cant input the material properties,flow stress of the material so the validation with theoritical becomes difficult so if anybody doe know about this how to input the matl pproperties and force of the press please help me

Dear all,

I want to do a run- up analysis for a rotor in ansys. The rotational speed change from 0 to 5000 rpm

In ansys help is explained:

nlgeom,on !! so that the gyroscopic matrix is updated

But because my model has Combin214 element, the nlgeom make error and solve dont run.

when I remove combin214, I dont get error.

I changed combin214 with matrix 27 but same problem.

In an example in ansys is used combin14. but my model is 2-D axisymmetric analysis and I think combin14 in not good element for modeling bearings.

why does ductile material fail by transgranularcracking

Dear All,

I am new to ABAQUS and trying to simulate my microdamper for fundamental mode frequency. In simulation (Version 6.9), I am trying to set silicone oil properties. This microdamper has three layers viz. Aluminum, Polydimethyl siloxane (PDMS) and Aluminum. I have carved microchannels in PDMS and filled silicone oil to these microchannels.

Silicone oil properties are:

Shear modulus = 1.43e9 Pa

Bulk modulus = 1.0349e9 Pa

Density = 760 Kg/m3

I am currently having difficulty modelling fatigue analysis on a wheelchair frame with hollow circular sections (pipe 16). When assigning the stress locations it says that the stress is not available for that node. 

Any help would be appreciated!

HEllo all,

I am trying to mesh a model in ansys which has a solid and the hollow cylinder inserted in its middle.I tried to glue this two solids but ansys doesnot support bt to add these i can do it?....i am trying to model a composite where the fibre is reinforced in the matrix.

plese help me