Fig. 4

Relative stress approximation error of a linear elastic composite. The error (28) of each macro stress component by means of the POD RVE simulation is given for the three arbitrary loading conditions \({\varepsilon _M}^{(1)}=[0.010,0.000,0.000;0.000,0.000,0.000;0.000,0.000,0.000]\), \({\varepsilon _M}^{(2)}=[0.010,0.005,0.000;0.005,0.020,0.000;0.000,0.000,0.000]\) and \({\varepsilon _M}^{(3)}=[0.007,0.005,0.014;0.005,0.008,0.004;0.014,0.004,0.012]\)