Abstract: This paper presents a general theory that describes the cyclic loading behavior of different materials. It is mathematically based on the theory of fuzzy sets. From the constitutive modeling point of view it is closely ...

Abstract: Stability of multitime step integration methods for finite-element computations in structural dynamics is analyzed. Multitime step procedures based on the Newmark family of methods are described. The basic idea of multitime ...

Abstract: TO cope with more realistic material behavior in the structural optimization process, this paper introduces a general constitutive model based on seven parameters along with the secant stiffness method and the Rosenbrock's ...

Abstract: A new technique for modeling localized deformations within a softening band is described, where softening is attributed to a displacement discontinuity within an element. Concepts such as fracture strain are not included ...