CALCULATION OF THE STRESS FIELDS IN A POLYSYNTHETIC TWIN LOCATED
NEAR THE CRYSTAL SURFACE 

O. M. Ostrikov

UDC 538.3

Without using the thin twin approximation, assuming a 
continuous distribution of dislocations on the boundaries, a procedure 
to calculate the stress fields in a polysynthetic twin located near 
the crystal surface has been developed. It is shown that the stresses 
in the polysynthetic twin are localized at the boundaries and apices 
of the twins that enter into the composition of the former twin. Examples 
of calculations of the cleavage stresses of the polysynthetic twin 
having rectilinear and curvilinear boundaries with uniform and nonuniform 
distribution of dislocations at them are given.

Keywords: polysynthetic twin, stress fields, twinning 
dislocation. 

P. O. Sukhoi Gomel' State Technical University, 48 Oktyabr' 
Ave., Gomel', 246746, Belarus. Translated from Inzhenerno-Fizicheskii 
Zhurnal, Vol. 82, No. 1, pp. 184-190, January-February, 2009. 
Original article submitted September 28, 2007; revision submitted 
April 25, 2008.