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ASMEの内圧式における0.6と国標の0.5は、何を根拠にしているのか

2016-08-17 View Original

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ASMEの内圧式はt=PR/(SE-0.6P)またはSE=P(R+0.6t)/t。GBではδ =PDi/(2-Pc)=PR/(-0.5P)=またはσ=P(Di+δ )/2δ =P(R+0.5δ )/δ。溶接係数は考慮されていない。形式はほぼ同じで、0.6と0.5の違いがあるだけです。ASMEで0.6が採用されているのは、どのような理由に基づくのでしょうか?

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