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Tensory Greena-Lagrange'a i Pioli-Kirchhoffa w płaskim elemencie belkowym

Zamorowski J.

Roczniki Inżynierii Budowlanej

2007

z. 7

141--144

Formulae have been introduced for the components of Green-Lagrange’s strain tensor and the 2nd Piola-Kirchhoff’s stress tensor for primarily deformed flat beam elements of the Timoshenko-type at large displacements and large and small rotations.

Pure shear of a cubic crystal

Wesołowski Z.

Archives of Mechanics

2003

Vol. 55, nr 1

109-125

Large simple shear of a crystal of cubic symmetry is considered. The equations of second order elasticity theory are applied. In this approximation three constants of the second order and six constants of the third order characterize the crystal. The stress for three shearing planes and three directions for each plane has been calculated. The stresses have been calculated separately for each material constant. For copper, the shearing planes and shearing directions for which stress reaches extreme values have been determined. The extreme values for each component of the traction have been calculated.