To shorten computation time for vibrational analysis, and to reduce the time and labor for extracting an aimed vibration mode.
An analysis model of a tire as an object of vibrational analysis is prepared (step S101). Next, an analysis condition is set (step S102), and a vibration analysis is performed (step S103). In the vibration analysis, a displacement of each node, in a node group for one round in a circumferential direction and existing at a same position within a meridional cross section of the analysis model, is defined by overlapping a product of at least one of sine and cosine waves as n-cycles of one circumferential round, in the analysis model with an additional freedom degree. In the vibration analysis, displacement of each node is computed based on the definition.
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松岡久祥,定常波離散化タイヤモデルの開発,第13回設計工学・システム部門講演会講演論文集,2003年10月30日,pp.49-52
松岡久祥、大熊政明、安藤正登,円筒形構造物に対する定常波離散化による新しい実験的モード特性同定法およびタイヤのモデル化への適用,日本機械学會論文集(C編),2002年11月25日,Vol.68, No.675,pp.3322-3328
Jun Takamura