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Journal of the Japanese Society of Snow and Ice
Article . 2007 . Peer-reviewed
Data sources: Crossref
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Simplified formula for stationary creep deflection of ice dome

アイスドームの定常クリープ変位算定式
Authors: Tsutomu KOKAWA;

Simplified formula for stationary creep deflection of ice dome

Abstract

既往のスパン10mm~30m級アイスドームのフィールド実験におけるクリープ変形過程を検討し,崩壊までの変形-時間曲線は大略,時間の経過に対して,I変位がほぼ直線的に増大する区間,即ち定常的クリープ過程と,IIその後から崩壊までの変位が加速的に増大する区間,即ち加速的クリープ過程の二つの過程から成ることを示した.このうち,本論文では定常的区間におけるクリープ変形の算定式を提案した.算定式の誘導は,(1)氷をニュートン粘性体と仮定しさらにクリープ材料の不変量理論とシェルの膜理論を適用して,球形アイスドームの鉛直変位式を導き,(2)その変位式において未定パラメータである氷の粘性係数を既往の10m~30m級アイスドームのフィールド実験で得られたクリープ変位測定値を用いて評価するという方法によった.その結果,粘性係数の平均値は約3500kgfcm-2dayであった.以上により,アイスドームの定常クリープ過程における鉛直変位の実用式を示した.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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