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Table 2 Input parameters of the material models for the metal projectiles

From: Effect of projectile shape and interior structure on crater size in strength regime

 

Copper

Aluminum

EOS model

Tillotson EOSa

Tillotson EOSa

Poisson’s ratio

0.34b

0.33c

Melting temperature (K)

1,356d

978e

Simon parameter a (GPa)

49.228d

7.98e

Simon parameter c

1.027d

0.57e

Specific heat (J/K/kg)

392.5f

896f

Johnson–Cook parameter A (MPa)

90 g

244 h

Johnson–Cook parameter B (MPa)

292 g

488 h

Johnson–Cook parameter N

0.31 g

0.5 h

Johnson–Cook parameter C

0.025 g

0.0 h

Johnson–Cook parameter m

1.09 g

3 h

Reference temperature (K)

293

293

  1. Detailed descriptions of the parameters can be found in the iSALE manual (Collins et al. 2016)
  2. aTillotson (1962)
  3. bKöster and Franz (1961)
  4. cWe used an aluminum alloy. The Poisson ratio was taken from the data compiled on the web page (http://asm.matweb.com/search/GetReference.asp?bassnum=ma6061t6) provided by ASM Aerospace Speciation Metals Inc. The database was constructed based on the information provided by the Aluminum Association Inc
  5. dThe pressure-dependent melting temperature of copper presented in Japel et al. (2005) was fitted by the Simon equation (e.gPoirier 1991; Wünnemann et al. 2008)
  6. eHänström and Lazor (2000)
  7. fThe Dulong–Petit values were used
  8. gJohnson and Cook (1983)
  9. hPierazzo et al. (2008)