Abstract: A method for execution by a computing entity includes interpreting a magnetic response from a set of magnetic field sensors to produce a piston velocity and a piston position of a piston associated with a head unit device. The head unit device includes a chamber filled with a shear thickening fluid (STF) that includes a multitude of magnetic nanoparticles. The method further includes determining a shear force based on the piston velocity and the piston position. The method further includes determining a desired response for the STF based on the shear force, the piston velocity, and the piston position. The method further includes generating a magnetic activation based on the desired response for the STF and outputting the magnetic activation to a set of magnetic field emitters positioned proximal to the chamber.

Abstract: A head unit device for controlling motion of an object includes a chamber filled with a shear thickening fluid (STF) and a piston. The piston is housed within the chamber and exerts pressure against the STF from a force applied to the piston from the object. The STF is configured to have a decreasing viscosity in response to a first range of shear rates and an increasing viscosity in response to a second range of shear rates. The piston includes at least one piston bypass between opposite sides of the piston that controls flow of the STF between the opposite sides of the piston to selectively react with a shear threshold effect of the first range of shear rates or the second range of shear rates.

Abstract: A method for execution by a computing entity includes interpreting a fluid flow response from fluid flow sensors to produce a piston velocity and a piston position of a piston associated with a head unit device. The head unit device includes a chamber filled with a shear thickening fluid (STF) and a variable partition positioned within the chamber between the piston and a closed end of the chamber to dynamically affect volume of the chamber based on activation of the variable partition. The method further includes determining a shear force based on the piston velocity and the piston position. The method further includes determining a desired response for the STF based on the shear force, the piston velocity, and the piston position. The method further includes activating the variable partition using the desired response for the STF to adjust the volume of the chamber.

Abstract: A head unit device for controlling motion of an object includes shear thickening fluid (STF) and a chamber configured to contain a portion of the STF. The chamber further includes a piston compartment and an auxiliary compartment. The head unit device further includes an auxiliary bypass configured within the chamber, and a piston housed at least partially radially within the piston compartment. The chamber further includes a set of fluid flow sensors and a set of fluid manipulation emitters to control the auxiliary bypass to adjust the STF flow between the piston compartment and the auxiliary compartment to cause selection of one of a first range of shear rates or a second range of shear rates for the STF within the piston compartment.