4.S52 | Shape and Material | Spring 2013
Non Newtonian Fluids : Oobleck
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
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A non newtonian fluid composed of a suspensinon of one part water to two parts corn starch is a demonstration of a shear thickening fluid, meaning the greater the amount of stress the material undergoes the greater the viscosity increases. Simply meaning the more force acting on the liquid body, the more is acts as a solid. Also known as a dilatant, this fluid’s properties are qualified by particle size, shape, and distribution, all of which are governed by force over an interval of time. The faster the force is applied, the greater of observable reaction. The thickening reaction therefore relies on both a quick stress force and significant amount of force entering the system to act as a non newtonian fluid. Current applications of these procedures are seen through industries where either friction or force is needed to inhibit or slow movement; traction control systems and braking mechanisms, as well as body armor applications are two such areas.
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
equilibrium acts as a liquid
Eric Randall Morris
thickened
acts as a solid
4.S52 | Shape and Material | Spring 2013
material variables
constant variables
viscosity
viscosity
force
Eric Randall Morris
operated variables
force
time
time
shape
shape
particle size
particle size
4.S52 | Shape and Material | Spring 2013
if the end goal is to manufacture shape from this material through the use of sound intervention, how can one meaningfully test and retest reliable geometry, form making techniques, and explore material quality?
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
three density types
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five sound bytes
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design intent to develop a drying / molding procedure for casted, fluid suspensions; with an emphasis on lessening material usage, reducing total weight, lowering density, and enhancing the internal strengths.
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
sound particle travel
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
observed reactions fluid suspension
internal thickening
sound wave equilibrium
Eric Randall Morris
thickened
4.S52 | Shape and Material | Spring 2013
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
potential ideal shape
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
rippled surface
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
parametric variables
particle size
sound wave amplitude + frequency
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
two new suspensions
five sound bytes
silicate based + aggregate based
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parametric schema after analyzing various fluid suspensions, the realization that these systems of interaction could be understood most intuitively at the particle level became apparent. which led me to conceptualizing a weighted parametric scheme to document the extents of my observations.
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
parametric schema
frequency [hertz]
distance [meters]
particle thickening
waveform spectrum amplitude [time] Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
future applications the application of sound to non newtonian fluid suspensions, such as concrete, types of silicates, and plasters, has the potential to yield lighter weight units by using less material than prior prototypes. by scattering, moving, jumping, and reacting to attuned frequencies, the poured substance would either disperse and coat the interior of a mold to create a shell or form a lattice like network that would be bounded by the contraints of the mold. both drying procedures would achieve a lighter weight and less dense volume. as for sturctural integrity? that question will have to wait until next semester!
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
Eric Randall Morris
4.S52 | Shape and Material | Spring 2013
Thank You!
Eric Randall Morris