This thesis aims to characterize a new type of removable spike for football boots, named SASpik, that will decrease the shocks and stresses on the athletes’ lower limbs. The primary objective consists in the long-term defense of the players’ joints integrity and it has been pursued by the employment of materials that enable to absorb shocks and damp impulsive loads suffered by the athlete while running. Particularly the innovative device is characterized by the interposition of an elastomeric element between the sole in contact with the player and the portion of device that sinks into the ground. This bearing therefore acts as a damper during the impacts with the ground, thus decreasing the articular suffering caused by the impulsive loads applied. The design of the device has been developed with the help of finite element simulations, which have allowed us to refine the first draft before the realization of samples. Simulations’ result have been validated through mechanical tests conducted in laboratory, from which it was possible to compute the additional energy absorption that occurs in the devices SASpik compared to the standard aluminum spikes. Then the SASpik devices were field-tested by professional athletes who have confirmed the beneficial effects at the muscles and joints.
L’obiettivo del presente lavoro di tesi consiste nella caratterizzazione di un nuovo tipo di tacchetto smontabile per scarpe da calcio, denominato SASpik, che consenta di diminuire gli shock e le sollecitazioni a carico degli arti inferiori degli atleti. L’obiettivo primario consiste nella tutela a lungo termine dell’integrità articolare degli atleti ed è stato perseguito tramite l’impiego di materiali che consentano di assorbire gli urti e smorzare i carichi impulsivi subiti dall’atleta durante la corsa. In particolare il dispositivo innovativo oggetto di studio è caratterizzato dall’interposizione di un elemento elastomerico tra la suola a contatto con il giocatore e la parte di dispositivo che affonda nel terreno. Questo cuscinetto funge quindi da smorzatore durante gli urti con il terreno, diminuendo di conseguenza la sofferenza articolare causata dai carichi impulsivi applicati. La progettazione del dispositivo è stata sviluppata tramite l’ausilio di simulazioni agli elementi finiti, le quali hanno permesso di affinare il primo progetto prima della realizzazione delle campionature. I risultati delle simulazioni sono stati validati tramite prove meccaniche condotte in laboratorio, da cui è stato possibile computare l’assorbimento energetico addizionale che si verifica nei dispositivi SASpik rispetto ai tacchetti standard. Successivamente il tacchetto SASpik è stato provato sul campo da atleti professionisti che ne hanno confermato gli effetti benefici a livello muscolo-articolare.
Progettazione e prove meccaniche su tacchetti compositi per il calcio e il rugby
GIOVI, ALICE
2011/2012
Abstract
This thesis aims to characterize a new type of removable spike for football boots, named SASpik, that will decrease the shocks and stresses on the athletes’ lower limbs. The primary objective consists in the long-term defense of the players’ joints integrity and it has been pursued by the employment of materials that enable to absorb shocks and damp impulsive loads suffered by the athlete while running. Particularly the innovative device is characterized by the interposition of an elastomeric element between the sole in contact with the player and the portion of device that sinks into the ground. This bearing therefore acts as a damper during the impacts with the ground, thus decreasing the articular suffering caused by the impulsive loads applied. The design of the device has been developed with the help of finite element simulations, which have allowed us to refine the first draft before the realization of samples. Simulations’ result have been validated through mechanical tests conducted in laboratory, from which it was possible to compute the additional energy absorption that occurs in the devices SASpik compared to the standard aluminum spikes. Then the SASpik devices were field-tested by professional athletes who have confirmed the beneficial effects at the muscles and joints.File | Dimensione | Formato | |
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2012_10_Giovi.pdf
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https://hdl.handle.net/10589/69846