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Hi,

I observed that with
periodic boundary conditions on unit concrete unit cell, when uniaxial load is applied structure
behaves as if it is constrained to move in lateral direction, when
shear or other traction laoding is applied it has displacement
compatible behavior i.e, parallel edges has periodic deformation
behavior. With these above behavior can I conclude that for uniaxial
loading I need not apply periodic BCs and simply applying roller is
sufficient on lateral edges or there is no need to apply and periodic
BCs for uniaxial loading.

Dear imechanica user,

As i know, stresses existing in the components suffering no any outer forces are called the residual stresses. To reply the reason why the residual stress appears in the component?

Could anyone answer this question for my understanding.

regards,

Arefin

I'm having a hard time trying to relate the the forces specified in the figure so that I can obtain the expression for the strain energy release rate.

For the 'L-opening load' P when acting alone, the energy release rate is given by: 

 G= (12*P²*L²) / (E*B²*h³)

For the '2L/3-opening load' P when acting alone, the energy release rate is given by:

 G=(16*P²*L²) / (3*E*B²*h³)

I m lecturer in Engg. coll. n I've started to learn Abaqus 6.9. Anybody help me for tutorials for abaqus 6.9.

Rgds

Tarun Aseri

hello,

can 2 .db files ,that are already meshed, be opened in a ANSYS window if i do not have input codes?

thank you very much

 best regards

hi sirs,

I am looking for some old papers, I need to study these but I couldnt access to them.

any one here can help me,  about sending electronic or hard-copy of these(or any of them)  papers to me?

1- Tauchert, T.R., Thermal buckling of thick antisymmetric angle-ply laminates,

Journal of  Thermal Stresses, 10, 113-124, 1987

2- L.W. Chen, L.Y. Chen, Thermal buckling analysis of composite laminated plates by the finite element method,

Journal of Thermal Stresses, 12, 41-56, 1989

Hi

 If some one can post simple crack propagation examples using ANSYS cohesive zone approach.  It will help many readers to formulate their research work further. 

Thanks and best regards. 

Hello,

I have read some literature on cohesive zone modeling for fracture behaviour in composites. I have some doubts. How many cohesive laws are there and how they are categorized? Whether cohesive elements (in FEM) are modeled as continuum or discrete?

Please suggest some good literature on this. Thanks & Regards,

Praveen.