Abstract
The author summes up his research on the effects of internal frictional-resistance on the chain-pull of the perforated conveyer-trough by means of measuring its dynamic side wall pressure and the flow patterns of the conveyed materials (beach gravels).The results obtained are as follows:-1) The weaker the scraping action of the chain and the stronger the side wall frictional coefficient, the greater becomes the structural-variation-resistance based on the mutual slips of conveyed granular fluid materials.2) Accordingly, the structural-variation-resistance keeps the close relationship with the flow-patterns of the conveyed fluid materials.3) The greater the structural-variation-resistance, the greater becomes the dynamic pressure on the side wall.4) When the granular fluid materials with the same size are used, under the same heightwidth ratio, the narrower the trough-width, in the greater ratio becomes the structural-variation-resistance.
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