Mathematical Problems in Engineering

Research Article

Spectral Classification of Non-Coaxiality for Two-Dimensional Incremental Stress-Strain Response

Figure 11

𝑅 𝑑 𝜎 − 𝜃 𝑑 𝜎 − c o s 2 𝜃 i n c for partially stable INC ( 𝐶 𝑑 𝑖 𝑗 𝑘 𝑙 𝛿 𝑘 𝑙 ≠ 0 ).
963043.fig.0011a
(a) No SIC/UIC (real 𝜆 2 , 𝜆 3 )
963043.fig.0011b
(b) No SIC/UIC (complex 𝜆 2 , 𝜆 3 )