The ability to accurately predict the crashworthiness performance is crucial to the use of composites in the primary energy absorbing structures in vehicles. Such predictions require material models that consider not only the initial failure but also the responses of severely damaged composites. The latter requirement exceeds the boundary of any existing physics based models. To address this problem, an enhanced continuum damage mechanics (ECDM) model has been developed. ECDM employs two sub-models, i.e. a pre-failure model and a post-failure model, to describe the stress–strain behavior in the pre-peak and post-peak regions. This setup allows one to consider the growth of damage and irreversible strains in the two regions under different evolution laws corresponding to different damage/deformation mechanisms. The ECDM model was evaluated in quasi-static and dynamic tube crash simulations of triaxial braided composites. The results show that the irreversible strains and residual stiffness are critical to the energy absorption prediction of composites. The ECDM model provides much improved correlations with the experimental results than the existing models.
Composite Structures – Elsevier
Published: Feb 1, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera