With aging the ability of the crystalline lens to adapt to different viewing distances decreases. Until now there is no satisfying treatment available. It is possible to influence the deformability of the crystalline lens by inducing cuts using femtosecond (fs)-laser. To test the influence of several different cutting geometries is expensive and a huge amount of crystalline lenses is needed. Fi...

The aim of this work is to evaluate and to compare the elastic shakedown domain obtained by two different approaches, an incremental simulation realised with an elastoplastic constitutive law and a simplified method, in an axisymmetrical structure subjected to a cyclic thermal and mechanical loading. The elastoplastic model has been developed by Electricité De France and implemented in the Fini...

In the paper we present the qualitative analysis of rolling motion without slipping of a homogeneous round disk on a horisontal plane. The problem was studied by S. A. Chaplygin, P. Appel and D. Korteweg who showed its integrability. The behavior of the point of contact on a plane is investigated and conditions under which its trajectory is finit are obtained. The bifurcation diagrams are const...

We st udy limi t evolut ions of cellular automata (CA) both theoretically and exp erimentally. We show that eit her all orbits ente r the limit set after less than a finit ely bo unded number of states, or almost all orbits never ent er the limit set . We link this result with a class ification of CAs according to their limit behavior due to Culik et al.: in t he first case, the considered CA b...

Buckling of imperfect thin shell tank which is subjected to uniform axial compression is analyzed. The effect of internal pressure on the stability of a shell tank filled with a homogeneous-heterogeneous liquid was considered. Investigation of the liquid nature effect on reduction of the shell buckling load is performed by using the finite elements method. Calculating results in terms of analyt...

Obiectivul acestei lucrări este de a analiza prin Metoda Elementului Finit (FEM) şi de a optimiza dimensional radiatoarele frontale ale sistemului de răcire pentru transformatorul electric de putere TTU 630 kVA 20/0.4 kV din punct de vedere al transferului termic maxim. Analiza cu Elemente Finite a fost realizată cu ajutorul programelor software SolidWorks 3D CAD Design şi COSMOSFlow Works 2008...