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Vibrations of an alpine ski under structural randomness
Author(s) -
Eberle Robert,
Oberguggenberger Michael
Publication year - 2019
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201900345
Subject(s) - bending stiffness , randomness , stiffness , bending , structural engineering , bernoulli's principle , vibration , beam (structure) , engineering , physics , mathematics , aerospace engineering , acoustics , statistics
In alpine skiing the vibrations of the skis influence the performance of a skier considerably. An alpine ski can be modelled as an Euler‐Bernoulli beam with which the vibrations of the ski can be analysed mathematically. The main characterising property of a ski is its bending stiffness, which can be measured in the lab. Since a ski is a composite material the measured bending stiffness shows variations. These variations can be taken into account by adding a random field to an average bending stiffness. An experiment of a clamped ski is investigated theoretically.