Can we design sports shoes that don’t squeak? Here’s what the science says
An international team of researchers is exploring the physics behind the squeaking of sports shoes and whether it can be eliminated without sacrificing grip.
Researchers from around the globe are addressing the common problem of squeaky sports shoes, particularly noted in sports like basketball and tennis. The sound produced during play arises from the interaction between soft and rigid materials, specifically the stick-slip phenomenon. This involves a cyclical process where the softer material, such as rubber, alternates between sticking and slipping, resulting in both noise and energy loss through friction.
This study goes beyond merely silencing shoes; it delves into the fundamental physics of material interaction. Existing theories about sound generation in these contexts focus on the elastic energy stored in the deformed soft material when it sticks, which is then rapidly released as kinetic energy which produces sound upon slipping. Understanding this mechanism is crucial for engineers looking to innovate in sports footwear design.
The implications extend beyond just comfort; improving shoe designs might lead to enhanced performance and reduce distractions for athletes. If researchers can successfully engineer solutions that maintain grip without the squeaking sound, it could reshape performance standards in sports gear, influencing both manufacturers and players alike.