TY  - INPR
A1  - Jaiani, George
A1  - Schulze, Bert-Wolfgang
T1  - Some degenerate elliptic systems and applications to cusped plates
N2  - The tension-compression vibration of an elastic cusped plate is studied under all the reasonable boundary conditions at the cusped edge, while at the noncusped edge displacements and at the upper and lower faces of the plate stresses are given.
T3  - Preprint - (2004) 27 
KW  - Casped plates
KW  - vibration
KW  - degenerate elliptic systems
KW  - weighted spaces
KW  - Hardy‘s inequality
KW  - Korn’s weighted inequality
Y1  - 2004
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-26866
ER  - 
TY  - INPR
A1  - Jaiani, George
T1  - On a mathematical model of a bar with variable rectangular cross-section
N2  - Generalizing an idea of I. Vekua [1] who, in order to construct theory of plates and shells, fields of displacements, strains and stresses of threedimensional theory of linear elasticity expands into the orthogonal Fourier-series by Legendre Polynomials with respect to the variable along thickness, and then leaves only first N + 1, N = 0, 1, ..., terms, in the bar model under consideration all above quantities have been expanded into orthogonal double Fourier-series by Legendre Polynomials with respect to the variables along thickness, and width of the bar, and then first (Nsub(3) + 1)(Nsub(2) + 1), Nsub(3), Nsub(2) = 0, 1,..., terms have been left. This case will be called (Nsub(3), Nsub(2)) approximation. Both in general (Nsub(3), Nsub(2)) and in particular (0,0) (1,0) cases of approximation, the question of wellposedness of initial and boundary value problems, existence and uniqueness of solutions have been investigated. The cases when variable cross-section turns into segments of straight line, and points have been also considered. Such bars will be called cusped bars (see also [2]).
T3  - Preprint - (1998) 21 
KW  - bar with variable cross-section
KW  - cusped bar
KW  - elastic bar
Y1  - 1998
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-25347
ER  -