Issue 42

T.V. Tetyakova et alii, Frattura ed Integrità Strutturale, 42 (2017) 303-314; DOI: 10.3221/IGF-ESIS.42.32

strain

ε ε 

strain rate

0

ε yy ε yy 

longitudinal strain

rate of the local longitudinal deformation (along the Y-axis)

value of the longitudinal strain achieved after the strain band propagation

ε h

y

coordinate of a point (along a specimen)

specimen width

b

0

gauge length of a specimen

l

0

specimen thickness

h b

0

width of the additional deformable part of a specimen (the control part) length of the additional deformable part of a specimen (the control part)

с

l

с

B

total width of the specimen with complicated geometry

width of peripheral parts of a specimen

a

R

radius of a hole

rate of the crosshead movement rate of the strain band propagation

u 

0

v

b

b coefficient of the strain inhomogeneity due to the Chernov-Lüder’s behavior LS R stiffness of a loading system M R stiffness of a testing machine с R stiffness of the additional deformable part of a specimen (the control part) E elasticity modulus k

314