Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Powiadomienia systemowe

Sesja wygasła!
Sesja wygasła!
Sesja wygasła!

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: anisotropic body

Sortuj według:

Ogranicz wyniki do:

Wariacyjne ujęcie zagadnienia przepływów cieplno-dyfuzyjnych w anizotropowym ciele lepkosprężystym

Haberecht M.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

2014

z. 104

65-68

The physical equations for anisotropic viscoelastic body taking into account distortions caused by thermal and diffusive influences are discussed in the work. On this basis one formulated a variatonal description of the problem, equivalent to the differential one.

Energy-based limit conditions for transversally isotropic solids

Kowalczyk K., Ostrowska-Maciejewska J.

Archives of Mechanics

2002

Vol. 54, nr 5-6

497-523

Using an example of transversal isotropy, the limit condition having an energy interpretation for anisotropic bodies proposed by J. Rychlewski [11] has been illustrated. Transversal isotropy is characterized by the highest degree of symmetry, for which the spherical tensor is not any more the eigenstate of the compliance tensor C. In the case when the spectral decomposition of the compliance tensor C is taken as a main energy-orthogonal decomposition, the limit condition representing a generalization of the Maxwell-Huber-Mises condition is obtained. For a prescribed form of the limit tensor H, the Mises condition is presented in the form of a sum of elastic energies corresponding to uniquely defined energy-orthogonal parts of stress with certain weights, representing the limiting values of those energies. The effect of Burzyński's condition on the form of anisotropy and on the limit condition is discussed. Experimental tests are proposed which could be useful in determining the physical parameters describing the transversal isotropy.

Elastic properties of the rectangular crystalline phase of planar hard cyclic pentamers

Tretiakov K. V., Wojciechowski K. W.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

2001

Vol. 5, No 3

331-340

Structural and elastic properties of the densest known solid phase of two-dimensional (2D) system of hard cyclic pentamers (each pentamer is composed of five discs which centres are placed at vertices of a perfect pentagon of sides equal to the disc diameter, delta) are studied by Monte Carlo simulations. The present study confirms that at high densities the pentamers form a 2D solid structure of rectangular lattice with two pentamers (which librate, without rotation, around their mean orientations) in the unit cell. Elastic constants calculated for this structure show that, in contrast to densely packed 2D hard cyclic heptamers (composed of seven discs of centres forming a perfect heptagon of sides equal to the disc diameter delta), the pentamers do not exhibit anomalous Poisson's ratios.