This work focuses on analysis of longfiber unidirectional carbon-epoxy composite using finite element method on a unit cell. A micromechanical model of he unit cell is created in computational system MSC Marc using orthotropic elastic fibers and isotropic elastoplastic matrix. The plasticity of the matrix is prescribed in the model by a hardening function. Material parameters of the
micromodel are identified using gradient optimization method in OptiSLang system. In the optimization, stress-strain relations obtained from the micromodel are compared with the stress-strain relations from a nonlinear macromodel. The macromodel of the composite material was created in author‘s previous work. Parameters of the macromodel were identified from experimental tensile tests also using optimization with MSC Marc and OptiSLang. and Obsahuje seznam literatury
The aim of this paper is to introduce the Choquet integral representation of some information quantities in the possibility theory. A possibilistic T-independence concept is further analyzed with respect to its information-theoretic properties. The main result is then the introduction of a so called general ineasure of T-dependence. It is further proven that the general measure of T-dependence exhibits significant properties froin an information-theoretic point of view and can be conceived as an apt analogy of the well-known probabilistic inutual information.
We propose a generalization of simple coalition games in the context of games with fuzzy coalitions. Mimicking the correspondence of simple games with non-constant monotone formulas of classical logic, we introduce simple Łukasiewicz games using monotone formulas of Łukasiewicz logic, one of the most prominent fuzzy logics. We study the core solution on the class of simple Łukasiewicz games and show that cores of such games are determined by finitely-many linear constraints only. The non-emptiness of core is completely characterized in terms of balanced systems and by the presence of strong veto players.