MS07 From blast and impact responses of porous media to constitutive modeling - honoring Prof. Frank L. DiMaggio

undefinedH. Liu1, undefinedH.I. Ling 2undefinedV.N. Kaliakin 3 
1City College of New York, United States, 2Columbia University, United States , 3University of Delaware, United States


Porous media for engineering applications can be subjected to blast or impact loading when it is in service. When the media are loaded by such extreme loadings, the pores may be filled with air; they may also be fully or partially filled with liquid. These complicated multi-phase and porous characteristics result in very unique response compared to those of continua. In the fields of civil, mechanical and biomedical engineering, natural and synthetic porous media have been employed to protect other media or structures, due to the unique responses of porous media under blast or impact loading. In addition, in the field of civil engineering, many construction materials, such as concrete, soil, rock and masonry, belong to porous media, and their responses to blast or impact loading are usually critical to the structure safety.
Research on this aspect of poromechanics has been active following the emergence of Biot’s theory in 1940’s. In recent years, owing to the growing threats of accidental or malicious blast/impact loadings, much more attentions have been directed to this field. This proposal of mini-symposium aims to attract researchers and engineers working on the related fields and establish an opportunity for them to share their findings and to discuss new trends for the future.
Topics that will fit in this mini-symposium consist of the following:

Considering the active research in the related fields, it is expected that the mini-symposium will be able to solicit enough papers for at least one session. However, if there will be more papers, the plan is to divide the papers into multiple sessions, each on a separate discipline. For example, one session can be on civil engineering application, the other one on mechanical and biomedical applications.

Professor Frank L. DiMaggio is one of the pioneers in the field of constitutive modeling of geomaterials. The Cap Model proposed by him and Ivan Sandler paved the way for subsequent development of advanced constitutive models for various types of geomaterials. 

To honor Professor DiMaggio’s achievements, two mini-symposia have been organized in his honor. The first was held at the 2002 ASCE Engineering Mechanics Conference; the second at the Fourth Biot Conference on Poromechanics in 2009. Both of these mini-symposia were very well received, with significant contributions from the modeling community.

In order to again provide a forum in which to present and discuss the latest developments in constitutive modeling of geomaterials, we propose to have the 3rd symposium honoring Professor Frank L. DiMaggio at the Fifth Biot Conference on Poromechanics. The scope of the mini-symposium would be limited to macroscopic, and microscopically inspired constitutive modes. To avoid an overly general scope, microscopic type models would not be included in the mini-symposium. The Symposium will also focus on the application of advanced constitutive models to practical problems, including validation and comparison with the well-documented experiments and case histories.


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