Asymptotic state boundary surface (ASBS) of clay hypoplasticity (Mašín, 2013)

Use the yellow sliders for parameter variation. You can also vary the values for p'ₑ (black) and φₘ (green) and display the corresponding asymptotic states. In this fig., the ASBS is displayed for 1 kPa < p'ₑ < 100 kPa.