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fracture energy for hashin damage evolution using Abaqus

ducbro's picture

hi everyone,

i'm modelling the impact on the composite carbon/epoxy using Abaqus 6.9.

i have the questions:

when i use damage evolution for hashin damage criteria,  i need the values of the fracture energy: longitudinal tensile fracture energy, longitudinal compressive frecture energy, transverse tensile fracture energy, transverse compressive fracture energy. i'm suggested to use the values as 12500, 12500,2500,2500. Are these correct? i dont know how to evaluate these values. Is there any suggestions?

wait for reponse.

regard :d

Comments

Hi!

 

It depends on the units you're using. For instance if you use mm and MPa, your fracture energy or toughness should be in kJ/m^2, in which case the toughness in longitudinal tension is ~ 100kJ/m^2 and  0.2 kJ/m^2 for transverse tension (for a typical carbon epoxy system). The measurement of these values is subject to quite some attention these days, but there is no standard yet and values are only available for a limited amount of systems. I'll suggest you read papers by Sorensen and by Pinho to get a better picture.

 

Arnaud 

How to get the values of Damage evolution data in Abaqus for glass/epoxy or glass Fiber Reinforced Epoxy pipes? In which publications the values could be found? handbooks? articles? reference books? Where...?? or How to calculate the values of Damage evolution data?

jason Zhu's picture

Jason Zhu

Best Regards

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