Fig. 15

Square plate with round hole, \(R/L=0.2\), \(l/L=0.3\): a \(\sigma _{xx}\)-stress, b \(\sigma _{yy}\)-stress, c \(\sigma _{xy}\)-stress
Square plate with round hole, \(R/L=0.2\), \(l/L=0.3\): a \(\sigma _{xx}\)-stress, b \(\sigma _{yy}\)-stress, c \(\sigma _{xy}\)-stress