hi I'm working on the calculation

[A. M. A]

hi
I'm working on the calculation of SIFs and T-stress I need to know if there is any wrong in my model
because the experimental results do not match the numerical results from ABAQUS
any help will be useful to me
best regard

 

[FEA way]

Can you attach an image showing results of this analysis and, if possible, a picture from the experiment. Is the difference large ?

 

[A. M. A]

the difference is large for example at loaded 2245N KI in abaqus =29.48 but in (dic) test =37.15, T-stress in abaqus=10.44 in experiment=1.66

 

[FEA way]

I tried opening the jnl file attached to your first post but recovery was not fully successful and some features are missing. Can you attach images showing results of this model and describe how it's constrained and loaded ? What kind of material do you use ?

 

[A. M. A]

if you allow me I will reload the case file again the material is FG epoxy glass composite with continuous elastic variation in young's modulus. I defined the materials as a function of temperature as an analytical field. the test is 3 point bending beam by using the digital image correlation method.
your help will save my project
best regard

 

[FEA way]

There is some distortion where boundary conditions and load are placed. Try modeling this with more accurate approach - for example apply BCs and load via rigid rollers.

 

[A. M. A]

thank you so much for this point, what about the material definition is that ok.