Close this search box.
Modelling impact be...
Clear all

Modelling impact behaviour of thermoplastics

3 Posts
3 Users
0 Reactions
Posts: 3
Topic starter
New Member
Joined: 14 years ago

Dear Jorgen,

I am interested in modelling the multiaxial response of thermoplastics (PP, HDPE) undergoing impact situations such as those found in a car-crash (strain rates between 10[SUP]2[/SUP] and 10[SUP]3[/SUP] s[SUP]-1[/SUP]).

My experimental data will be falling weight and tensile-impact test results.

Do you think the TNM or PNM models will be appropriate for these particular conditions?. Otherwise, which model would you suggest for this application?

Thank you very much in advance.

Regards, Juan.

2 Replies
Posts: 3998
Joined: 5 years ago

Good question. I often use both the TNM and the PNM for impact simulations - they both usually work very well.

If you dont want to use those (advanced) models, then you are stuck with standard metal plasticity models with rate-dependence.

Best of luck,

2 Replies
Posts: 7
Active Member
Joined: 12 years ago

Ok i misunderstood something now its clear.