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i want to model crack propagation in HDPE using Ansys, first i need to define the behaviour of this material,

so, what is the adequate constitutive law for HDPE.

thanks all

- Thread starter zerrouki
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- #1

- 6

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i want to model crack propagation in HDPE using Ansys, first i need to define the behaviour of this material,

so, what is the adequate constitutive law for HDPE.

thanks all

- #2

Chestermiller

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Are the strains small? Is there going to be any crystallization during the crack formation?

- #3

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the HDPE have a large strain that can reach 600% in tensile test, about the of crack propagation, the process carried out in room temperature.

thanks for interest.

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Chestermiller

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- #6

Chestermiller

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There are lots of constitutive equations out there that describe viscoelastic materials qualitatively, in terms of a set of material parameters. However, I know of none that are capable of describing the behavior of a real material like HDPE

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- #8

Chestermiller

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I'm not familiar with that model. Sorry.plasticbehaviour of the HDPE, have you some informations about this model ? ( if it can work with large deformation or with just small ones ?).

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