Shape-memory actuator digital twin / NiTi SMA–11
This virtual test rig approximates Joule heating and cooling in an electrically driven NiTi shape-memory actuator. Heating and cooling use distinct transformation thresholds to show thermal hysteresis. A damped moving mass follows the changing actuator force equilibrium.
Change the heater duty, cooling airflow or mechanical load; observe the helical actuator contract and expand. Enable automatic cycling to collect a hysteresis loop. Drag the 3D apparatus to rotate; scroll to zoom. Export time-series data or your configuration.
SI-unit, simplified dynamic model using a lumped thermal capacitance, convective and radiative losses, smooth transformation fractions and a linearized stiffness. It is not an Abaqus/FEA solver, a validated NiTi constitutive law, a manufacturing process model or an operational safety control.
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