The variables for the material update parameters are:
E |
= |
Young’s Modulus |
YS |
= |
Yield Stress of material |
= |
Strength coefficient (power law equation ) |
|
= |
Pre-strain coefficient |
|
n |
= |
Strain-hardening exponent (measures stretch ability/work hardening of material) |
r |
= |
Plastic strain ratio (measures deep draw ability of material) |
Note: Material units must be consistent for all parameters.
The following equations are commonly used to calculate and :
Where:
e = 2.718
TS = tensile strength
YS = yield stress
Some common unit conversions are listed below:
|
USCU – SI |
SI - USCU |
Length |
1 in = 25.4 mm |
1 mm = 0.03937 in. |
Force |
1 lb = 4.448 N |
1 N = 0.2248 lb |
Stress |
1 Ksi = 6.895 Mpa |
1 Mpa = 0.145 Ksi |
Mass |
1 lbm = 0.4536 kg |
1 kg = 2.205 lbm |
Gravity |