Table 1 Physical and mechanical property parameters of materials.

From: Study on energy absorption characteristics of the corrugated straight tube flip type energy absorption device

Material

Density ρ (kg/m3)

Elastic modulus E (GPa)

Poisson’s ratio μ

Yield strength σs (MPa)

Strength limit σb (MPa)

42CrMo

7850

212

0.280

930

1080

HG785D

7870

213

0.286

666

736

Q235

7830

210

0.274

235

380