Table 3 Material parameters in simulation software.

From: Design optimization and experiment of corn U-shaped fertilization device

Materials

Density (kg/m3)

Poisson 's ratio

Shear modulus (MPa)

Compound fertilizer particles

Slow controlled fertilizer particles

1328

1564

0.25

0.25

1.0 × 107

1.0 × 107

Soil particles

2500

0.3

1.0 × 106

Fertilization device

7800

0.3

7.0 × 1010