Views on Microstructures in Granular Materials - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Views on Microstructures in Granular Materials write by Pasquale Giovine. This book was released on 2020-11-09. Views on Microstructures in Granular Materials available in PDF, EPUB and Kindle. This contributed volume provides an up-to-date overview of the mechanics of granular materials, ranging from sparse media to soils. With chapters exploring state-of-the-art theoretical, experimental, and applied trends in the study of granular matter in various states, readers will be motivated to learn about the current challenges and potential avenues of exploration in this active area of research. Including a variety of perspectives, this volume will be a valuable reference for audiences in a number of fields. Specific topics covered include: X-ray tomography techniques for analyzing sand Evaluation of effective stress in unsaturated soils Hyper-plasticity Wave propagation in granular systems Partly saturated porous media Multi-scale approaches to the dynamics of sparse media Views on Microstructures in Granular Materials is an ideal resource for PhD students and researchers in applied mathematics, solid-state physics, civil engineering, and mechanical engineering.
From Microstructure Investigations to Multiscale Modeling
From Microstructure Investigations to Multiscale Modeling - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook From Microstructure Investigations to Multiscale Modeling write by Delphine Brancherie. This book was released on 2018-01-04. From Microstructure Investigations to Multiscale Modeling available in PDF, EPUB and Kindle. Mechanical behaviors of materials are highly influenced by their architectures and/or microstructures. Hence, progress in material science involves understanding and modeling the link between the microstructure and the material behavior at different scales. This book gathers contributions from eminent researchers in the field of computational and experimental material modeling. It presents advanced experimental techniques to acquire the microstructure features together with dedicated numerical and analytical tools to take into account the randomness of the micro-structure.
Mechanics of Granular Materials: An Introduction
Mechanics of Granular Materials: An Introduction - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Mechanics of Granular Materials: An Introduction write by K. Iwashita. This book was released on 2020-08-13. Mechanics of Granular Materials: An Introduction available in PDF, EPUB and Kindle. This textbook compiles reports written by about 35 internationally recognized authorities, and covers a range of interests for geotechnical engineers. Topics include: fundamentals for mechanics of granular materials; continuum theory of granular materials; and discrete element approaches.
The Role of the Microstructure in Granular Material Instability
The Role of the Microstructure in Granular Material Instability - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Role of the Microstructure in Granular Material Instability write by Nho Gia Hien Nguyen. This book was released on 2016. The Role of the Microstructure in Granular Material Instability available in PDF, EPUB and Kindle. Granular materials consist of dense pack of solid grains and a pore-filling element such as a fluid or a solid matrix. The grains interact via elastic repulsion, friction, adhesion and other surface forces. External loading leads to grain deformations as well as cooperative particle rearrangements. The particle deformations are of particular importance in many industry applications and research subjects, such as powder metallurgy and soil mechanics. The response of granular materials to external loading is complex, especially in case when failure occurs: the mode of the failure can be diffuse or localized, and the development of specimen pattern can be drastically different when the specimen can no longer sustain external loading. In this thesis, a thorough numerical analysis based on a discrete element method is carried out to investigate the macroscopic and microscopic behavior of granular materials when a failure occurs. The numerical simulations include the vanishing of the second-order work instability criterion to detect failure. Furthermore, it is proved that the vanishing of second-order work coincides with the change from a quasi-static regime to a dynamic regime in the response of the specimen. Then, microstructure evolution is investigated. Evolution of force-chains and grain-loops are investigated during the deformation process until reaching the failure. The second-order work is once again taken into account to elucidate the local aspect that governs the failure, taking place at the particle scale. The collapse of the discrete specimen when it turns from quasi-static to dynamic regime is accompanied with a burst in kinetic energy. This rise of kinetic energy occurs when the internal stress cannot balance with the external loading when a small perturbation is added to the boundary, resulting in a difference between the internal and external second-order works of the system. The mesostructures have a symbiosis relationship with each other and their evolution decides the macroscopic behavior of the discrete system. The distribution of the collapse of force-chain correlates with the vanishing of the second-order work at the grain scale. The mesostructures play an important role in the instability of granular media. The second-order work can be used as an effective criterion to detect the instability of the system on both the macroscale and microscale (grain scale).
Constitutive Modelling of Granular Materials
Constitutive Modelling of Granular Materials - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Constitutive Modelling of Granular Materials write by Dimitrios Kolymbas. This book was released on 2012-12-06. Constitutive Modelling of Granular Materials available in PDF, EPUB and Kindle. In view of its extreme complexity the mathematical description of the mechanical behaviour of granular materials is an extremely difficult task. Today many different models compete with each other. However, the complexity of the models hinders their comparison, and the potential users are confused and, often, disencouraged. This book is expected to serve as a milestone in the present situation, to evaluate the present methodes, to clear up the situation, to focus and encourage for further research activities.
