A geometrically non-linear mathematical-physical model of the snap-through of the system of a thin-walled shallow bimetallic translation shell in a homogenous temperature field according to the theory of large displacements, moderate rotations, and small strains of the shell element was formulated. The model enables the calculation of the geometric conditions, of shallow translation shells, due to the influences of temperature and mechanical loads.
COBISS.SI-ID: 2036323
Evaluation of the mechanical and rheological characteristics of a polymer matrix was performed by texture analysis. A penetrometry technique where the material is subjected to a controlled force from which a deformation curve of its response is generated. From the resultant force-displacement plot, several parameters of the material were derived that are directly related to the performance of the sample, such as its relaxation and swelling, and also its adhesion and flowability.
COBISS.SI-ID: 2510961
Large deflections of nonlinearly elastic cantilever beams made from materials obeying the generalized Ludwick constitutive law were studied. An exact moment-curvature formula which can be applied to analyze arbitrarily loaded and supported beams of rectangular cross-sections is developed. Several advantages of the generalized Ludwick’s model were illustrated. Numerical examples considered in this materially and geometrically nonlinear analysis clearly indicated rich nonlinear behavior of the beams.
COBISS.SI-ID: 11167003
We propose an approach to the vibration modeling of spatially curved steel wires with a casing and a contact between the outer casing and the inner steelwire. For the mathematical model of the steel wire and the outer casing, the Euler-Bernoulli beam theory with no axial pre-load is used, and for the discretisation, finite elements are used. The excitation of the steel wire and the outer casing is in the form of random kinematic excitation.
COBISS.SI-ID: 10936347
The aim of this study was to develop an efficient and realistic numerical model in order to predict the dynamic response of belt drives. The belt was modeled as a planar beam element based on an absolute nodal coordinate formulation. A viscoelastic material was adopted for the belt and the corresponding damping and stiffness matrices were determined. The belt-pulley contact was formulated as a linear complementarity problem together with a penalty method.
COBISS.SI-ID: 10609947