温度場とひずみ場間の連成が最大熱応力に及ぼす影響について : 一次元平板の場合

概要

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The present paper deals with influence of thermomechanical coupling on the maximum thermal stress in a one-dimensional plate in detail. Inverstigations were done by varying the factors related to the maximum thermal stress ratio. The factors examined were the coupling parameter, Biot's number and Poisson's ratio. Though close form solutions were obtained for a plate heated on its both surfaces, the numerical analysis was performed for a plate heated on one surface. The results obtained are summarized as follows: (1) The rate of in crease of the maximum thermal stress ratio for the coupling parameter tens to decrease gradually. (2) The maximum thermal stress ratio is largest when Biot's number at the unheated surface side is 0 and that at the heated surface side is neaely 4. (3) The maximum thermal stress ratio increases almost linearly with the decrease of Poisson's ratio. The avove maximum termal stress ratio is the quanity defined by ∣(σ^^-_<δmax>-σ^^-_<0max>)/σ^^-_<0max>∣×(%), where σ^^-_<δmax> and σ^^-_<0max> are coupled and uncoupled maximum thermal stress, respectively.
社団法人日本材料学会の論文
1985-11-15