Non Newtonian Fluids : Oobleck

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

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4.S52 | Shape and Material | Spring 2013

potential ideal shape

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4.S52 | Shape and Material | Spring 2013

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4.S52 | Shape and Material | Spring 2013

rippled surface

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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