PhD Student Mechanics of Penetration of High-Performance Composites
Eindhoven University of Technology, Netherlands
Deadline: 31 Aug 2015
UHMWPE composites are highly anisotropic materials (ratio of tensile to shear strengths on the order of 1000) with complex multi-scale micro-structures that interact across their length scales. This has made the development of a robust understanding for these materials elusive. We thus aim to develop multi-scale models that can then be translated to robust constitutive models for these composites with applicability to model penetration in both the low and high velocity regimes. Specifically the objectives will include:
Developing a detailed finite element model of the composite at the level of individual fibers, accounting for the composite’s microstructure and its dominant failure mechanisms in an explicit fashion.
Studying the response of the detailed model under impact conditions in order to establish the dominant failure mechanisms as a function of the parameters of the system.
Translating the key physical insights gained from the detailed model into a simpler, homogeneous continuum damage model, which is to be implemented in a commercial finite element code.
Validating the continuum model against experimental data from the literature.
Tasks
Study the relevant literature.
Formulate three-dimensional constitutive models at both scales considered, taking into account the large strains and extreme degree of anisotropy of the material, as well as relevant failure mechanisms.
Develop the finite element discretization of the models and implement them in a nonlinear finite element code.
Run large-scale simulations and interpret results.
Report results in journal publications and PhD thesis.
Assist industrial partners of the project in adopting the code developed.
For more information on this PhD position please contact Dr. Ron Peerlings:
R.H.J.Peerlings@tue.nl
You may apply here:
http://jobs.tue.nl/wd/plsql/wd_porta...page_id=224689
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