一种适用于岩土的扩展强度及屈服准则1)
万征*2)(),孟达*,宋琛琛
AN EXTENDED STRENGTH AND YIELD CRITERION FOR GEOMATERIALS1)
Wan Zheng*2)(),Meng Da*,Song Chenchen

图13. $m = 2$情况下应力罗德角$\theta $对偏平面上曲线的凹凸性的影响

Fig. 13. Effect of stress Lode angle on the concavity and convexity of curve with $m = 2$