An Integrated Experimental-Computational Approach for Developing a Multiscale Theory for Cavitation in Complex Soft Materials
Abstract
An Integrated Experimental-Computational Approach for Developing a Multiscale Theory for Cavitation in Complex Soft MaterialsNovel challenges have motivated the need to develop an understanding of bubble dynamics in and near soft materials, such as biological tissues, polymeric coatings, biofouling, composites and other synthetic materials. While models have been developed to successfully predict cavitation erosion to metallic surfaces, the theoretical foundation underlying these models is nolonger valid when considering soft matter, due to its unique deformation and failure mechanisms. These mechanisms, in turn, are a function of the complex microstructure and of the extreme conditions of loading (large strains at high strain rates). The few preliminary studies of cavitation in soft materials highlight the dependence of the bubble dynamics on the material properties andpoint to the need to develop a comprehensive multiscale theory capable of accounting for physical phenomena not present in traditional hydrodynamic cavitation.This proposal will develop and validate a multiscale theory for cavitation and its associated damage mechanisms in complex, soft materials, starting from homogeneous, isotropic gels to multilayered substrata and nonlinear, rate-dependent polymers. This will be achieved through a rigorous and synergistic integration of experimental techniques and computational formulations.Once developed, the computational-theoretical framework will be utilized to quantitatively characterize the material behavior of complex soft materials across several orders of magnitude in length scale, strain rate, strain magnitude, temperature and stress, which is not achievable with current material characterization methodologies. We have assembled a multi-disciplinary, multiinstitutional team with the expertise, collaborative track record, state-of-the-art models and experimental tools to achieve the proposed goal.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 27, 2018
- Source ID
- N000141812625
Entities
People
- Christian Franck
Organizations
- Office of Naval Research
- United States Navy
- University of Wisconsin System