Units

LS-DYNA requires a consistent set of units to be used. All parameters in this manual are in SI units.

General

• length [m]
• mass [kg]
• temperature [K]
• time [sec]
• pressure [Pa]

Mechanical units

• density [kg/m3]
• Modulus of elasticity [Pa]
• yield stress [Pa]
• coefficient of expansion [m/m K]

Thermal units

• heat capacity [J/kg K]
• thermal conductivity [W/m K]
• heat generation rate [W/ m3]

See also the HowTo on consistent units