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PRINTED
RUNNING PERFORMANCE
A study of additive design as
a bridge between current standards and
a breakthrough in marathon performance.
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IMAGE AND FOOTAGE OF ALL TESTED LATTICE SAMPLES ALONG WITH MIDSOLE PROTOTYPE
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PRESENTATION OF LATTICE DESIGN VARIATIONS AND RESERACH ANALYSIS
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GALLERY OF PERSONAL MARATHON TRAINING, CURRENT INDUSTRY STANDARDS, AND DEVELOPMENT 3D-PRINTED FOOTWEAR
A NEW WAVE
OF CREATION
The structural innovation of foam midsoles has reached a plateau due to the lack of internal controllability inherent in traditional injection molding.
The capacity for advancement is dependent on
greater fluidity in construction.
The start of this project had aligned with the inception of the footwear industry's exploration of 3D-printed structures.
With additive manufacturing, the midsole can now be framed as a void to be filled with linkages
of highly-variable structures.
ANIMATION OF MECHANICAL COMPRESSION TESTS ON LATTICE SAMPLES
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AN EXHIBITION OF TESTED LATTICE VARIABLES: UNIT CELL TYPE, BASE GEOMETRY, THICKNESS GRADIENT, AND CELL ARRANGEMENT
Greater energy return heightens running efficiency
and reduces overall muscular force per stride.
Lattice anatomy is highly controllable and can be
tuned to exhibit varying mechanical behaviors.
Using energy return as the main performance parameter,
can additive structures outcompete conventional foam?
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SHOWCASE OF STAGE 1 PROTOTYPE ALONG WITH ITS RESULTING BEHAVIOR UNDER SIMLUATED COMPRESSION OF RUNNING STEPS
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SHOWCASE OF STAGE 2 PROTOTYPES ALONG WITH THEIR RESULTING BEHAVIOR UNDER SIMLUATED COMPRESSION OF RUNNING STEPS
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SHOWCASE OF STAGE 3 PROTOTYPES ALONG WITH THEIR RESULTING BEHAVIOR UNDER SIMLUATED COMPRESSION OF RUNNING STEPS
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SHOWCASE OF STAGE 4 PROTOTYPES ALONG WITH THEIR RESULTING BEHAVIOR UNDER SIMLUATED COMPRESSION OF RUNNING STEPS
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SHOWCASE OF STAGE 5 PROTOTYPES ALONG WITH THEIR RESULTING BEHAVIOR UNDER SIMLUATED COMPRESSION OF RUNNING STEPS
FUTURE
OUTLOOK
The best performing lattice prototype displayed an energy return ~6% less than the Nike ZoomX running midsole within the same testing constraints.
Further structural explorations lie in translating
the sample arrangements to a full midsole model
while preserving the same mechanical behavior and remaining lightweight.
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RENDER OF DEVELOPED VORONOI STRUCTURE
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RENDER OF DEVELOPED VORONOI STRUCTURE
CREDITS
HARDWARE
Form 2 - FormLabs
Servohydraulic System - Instron
SOFTWARE
nTopology
Adobe Suite
MATERIAL
Elastic Resin - FormLabs
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