Isogeometric Analysis of In-Plane Free Vibrations of a Curved Timoshenko Beam
This paper presents an isogeometric formulation for the linear in-plane free vibration analysis of arbitrarily curved Timoshenko beams. The model is developed using curvilinear coordinates, ensuring a consistent kinematic description and accurate representation of strongly curved geometries. The beam geometry is described exactly using B-spline and...
By Snježana Milovanović, Aleksandar Borković, Dijana Tatar, Ognjen Mijatović
Linear Dynamic Analysis of a Spatially Curved Bernoulli-Euler Beam Subjected to a Moving Load
This paper considers the dynamic analysis of a spatially curved Bernoulli-Euler beam subjected to a moving load. The isogeometric approach is used for the spatial discretization of the weak form of the equation of motion. Both the reference geometry and the solution space are represented using the same NURBS basis functions that guarantee an accura...
By Miloš Jočković, Marija Nefovska-Danilović, Aleksandar Borković
MATERIAL NONLINEAR ANALYSIS OF PLANE TRUSS STRUCTURES
An approach to elasto‐plastic analysis of engineering structures is presented in this study. Simple plane truss finite element with two nodes is used. This element is ideally suited as a basis for studying plasticity theory since it implies one‐dimensional state of stress and strain. Material model of linear isotropic hardening is applied. Algorith...
By Aleksandar Borković, Dragan Milašinović, Slobodan Slavnić
ON THE INFLUENCE OF MODE INTERACTION ON THE BUCKLING EIGENSHAPES OF THIN‐WALLED STRUCTURES
Some considerations on influence of mode interaction on eigenshapes of the thin‐walled structures are given. Classic theory is limited on structures with non‐deformable cross section, so that for general analysis it was necessary to apply semi‐analytical finite strip method. Strip displacement field is approximated with sum of products of trigonome...
By Radomir Cvijić, Aleksandar Borković, Saša Tatar
DEVELOPMENT OF 2‐AXIS HARMONIC SHAKING TABLE
Development of device for harmonic excitation of engineering structures is presented. Device is developed in order to introduce experimental dynamic analysis of structures to students and engineers. Basic drive mechanisms of device are electric motors whose rotational motion is transferred into translational. This enables possibility for excitement...
By Ognjen Mijatović, Manuel Desančić, Aleksandar Borković