Influence of Sample Reconstitution on Advanced Model Calibration

Data Availability Statement

Notation

a

dimensionless factor in the basic hypoplastic model;

C_u

coefficient of uniformity;

d

diameter;

d₅₀

mean grain size;

E₅₀

stiffness at 50% of maximal deviator stress (i.e., E₅₀-stiffness);

E_50,error

model error of stiffness at 50% of maximal deviator stress (i.e., E₅₀-stiffness);

e

void ratio;

e₀

initial void ratio;

e_0c

consolidated void ratio;

e_c

void ratio at critical state;

e_c0

void ratio at critical state with zero pressure;

e_d

void ratio at densest state;

e_d0

void ratio at densest state with zero pressure;

e_i

void ratio at loosest state;

e_i0

void ratio at loosest state with zero pressure;

e_max

maximum void ratio;

e_min

minimum void ratio;

F

dimensionless factor in the basic hypoplastic model;

f

frequency;

f_b

factor in the basic hypoplastic model;

f_d

factor in the basic hypoplastic model;

f_e

factor in the basic hypoplastic model;

h

height;

h_s

granular hardness;

I_d0

initial relative density;

I_dc

consolidated relative density;

K₀

earth pressure coefficient;

L

linear tensor function in the basic hypoplastic model;

ME

model error;

m_d

dry mass;

m_R

intergranular strain parameter;

m_T

intergranular strain parameter;

N

nonlinear tensor function in the basic hypoplastic model;

n

compression exponent;

P

average load;

p

mean stress;

p_cav

cavity pressure;

p_lim

limit cavity pressure;

p_v

pressure of vacuum pump;

q_c

cone resistance;

R²

coefficient of determination;

R_max

intergranular strain parameter;

r

radius of cavity;

r₀

initial radius of cavity;

SD

standard deviation;

s

settlement;

$\dot{s}$

monotonic displacement rate;

$\dot{u}$

pore pressure rate;

V₀

initial volume of the sample;

W

energy;

α

parameter of the basic hypoplastic model;

β

parameter of the basic hypoplastic model;

β_r

intergranular strain parameter;

Δu

back pressure;

ΔV_c

change in volume due to consolidation;

ɛ₁

axial strain;

ɛ₂

radial strain;

ɛ₃

radial strain;

$\dot{\mathit{\epsilon }}$

strain rate tensor;

${\dot{\epsilon }}_1$

axial strain rate;

ɛ_v

volumetric strain;

θ

cone angle;

ρ_s

particle density;

σ

isotropic stress;

σ

Cauchy stress tensor;

$\dot{\mathit{\sigma }}$

Jaumann stress rate tensor;

σ₁

axial stress;

${\sigma }_1^{\mathrm{\prime }}$

effective axial stress;

σ₂

radial stress;

σ₃

radial stress;

${\sigma }_c^{\mathrm{\prime }}$

isotropic consolidation stress;

${\dot{\sigma }}_1$

axial stress rate;

φ_c

critical friction angle;

φ_p

peak friction angle;

φ_p,error

model error of peak friction angle;

φ_r

residual friction angle;

φ_r,error

model error of residual friction angle;

χ

intergranular strain parameter;

ψ

peak dilation angle; and

ψ_error

model error of peak dilation angle.

References