Tag Archives: snow

SNOWBOARD VIBRATION

Hi Guys, The following is an interesting (but tech heavy) article that investigates snowboard deck vibrations and the potential implications on elite-level snowboarding performance.

Article Title

Vibration of Snowboard Decks.

Article Authors

Franz Konstantin Fuss, Ben Cazzolato, Ashley Shepherd, and Jason Harding

Abstract

Vibrations of snowboards are closely related to their performance. The aim of this study was to investigate the frequencies of bending and torsional modes, the damping ratios and location of node lines in two boards with different torsional stiffness under free-free boundary conditions with a non-contact laser vibrometer. The frequencies of the first three bending modes were at 16, 37, and 65 Hz. The frequencies of the first three torsional modes were at 30, 54 and 86 Hz in one board, and 10% higher in the 2nd board. The damping ratios of the two boards investigated ranged between 0.3 and 0.6% for bending and between 0.6 and 1% for torsion. The location of the node lines was comparable to a free-free beam with constant cross-section. Vibration analysis should be a standard investigation for benchmarking of snowboards, in addition to mechanical and geometrical parameters.

Full Reference

Fuss FK, Cazzolato B, Shepherd A, Harding JW. (2010) Vibration of Snowboard Decks. In: The Engineering of Sport 8, pp 2863 – 2867, Eds: Sabo A, Kafka P, Litzenberger S, Sabo C; Elsevier, Amsterdam.

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JASON HARDING

ANARCHIST ATHLETE

TECH BASED JUDGING

Hi Guys, The following article is an in-depth review of the best technologically-based, objective performance assessment methods currently under trial in elite-level snowboarding competitions

Article Title

Performance Assessment Innovations For Elite Snowboarding.

Article Authors

Jason William Harding and Daniel Arthur James

Abstract

This paper provides a review of objective performance assessment in elite half-pipe snowboarding.  Half-pipe snowboarding is currently coached and judged in competition using subjective measures.  Like other sports that rely on subjectivity however, the methodology underpinning how coaches assess athletic progression and judges score performance is open for debate.  This paper focuses on technology assisted, objective performance assessment.  Key considerations are the specificity of the information, the accuracy and reliability of results, the processing time required and the current accessibility.

Full Reference

Harding JW, James DA. (2010) Performance Assessment Innovations For Elite Snowboarding. The Engineering of Sport 8 – Engineering Emotion, Saboa, A., Kafkaa, P., Litzenbergera, S., Saboa, C. Elsevier Ltd Amsterdam., 2 (2), 2919 – 2924.

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CLICK HERE TO ACCESS FULL ARTICLE

JASON HARDING

ANARCHIST ATHLETE

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