This contribution introduces a multiscale fracture model that aims to take the microstructural length scale effects into account in brittle failure. is formulated framework of Cosserat continuum theory and coupled with phase field approach failure describe complex crack paths. The effectiveness proposed method demonstrated using two cases: shear propagation problem interaction problem. first be...

Abstract In this work, particle composite materials with different kind of microstructures are analyzed. Such described as made rigid particles and elastic interfaces. Rigid arbitrary hexagonal shape considered their geometry is by a limited set parameters. Three textures analyzed static analyses performed for comparison among the solutions discrete, micropolar (Cosserat) classical models. part...

: Investigations on control and optimization of continuum manipulators have resulted in a number of kinematic and dynamic modeling approaches each having their own advantages and limitations in various applications. In this paper, a comparative study of five main methods in the literature for kinematic, static and dynamic modeling of continuum manipulators is presented in a unified mathematical...

Abstract We discuss a model of fibrous solids composed three families continuously distributed Kirchhoff rods embedded in matrix material. This is special case Cosserat elasticity which the basic kinematic descriptors are single deformation field and rotation fields, one for each fiber family. The fibers assumed to convect with underlying continuum as material curves. Various kinds internal con...

The existence of surface elastic waves at a mechanically free surface of granular phononic crystals is studied. The granular phononic crystals are made of spherical particles distributed periodically on a simple cubic lattice. It is assumed that the particles are interacting by means of normal, shear, and bending contact rigidities. First, Rayleigh-type surface acoustic waves, where the displac...