Air-cushioning in impact problems
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چکیده
منابع مشابه
Numerical Evaluation of Cushioning Pressure in Water Entry of Rigid Bodies
Effect of air cushion layer right before impact of a rigid body onto water surface has been investigated in this paper. The study is mainly focused on evaluation of cushioning pressure and the resulting free surface elevation. The air flow is assumed to be an irrotational flow which is governed by Laplace equation. The air problem and the resulting response of the water free surface are suppose...
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The advent of the “Running Boom” in the late 1970’s coincided with the introduction of the first “technical” running shoe products incorporating cushioned soles and features intended to stabilize the foot during ground contact. The sensation of comfort provided by cushioned running shoes appears to have facilitated the participation of many “joggers” who would otherwise not have taken up the sp...
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Worldwide, the pace of development in pedestrian countermeasures is increasing rapidly. To better understand the state of the art in bumper design for pedestrian impact, a survey of literature and patents has been performed. Two general approaches to reducing the severity of pedestrian lower limb impacts were identified: (a) Provide cushioning and support of the lower limb with a bumper and a n...
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In this paper we investigate the use of an innovative sheet folding theory and technology in the design of new cushioning systems. Flat sheets of material are folded into three dimensional patterns. The effectiveness of the folded pattern in absorbing impact energy without subjecting items being cushioned to high acceleration is dependent on the sheet material, the fold configuration (number of...
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The purpose of this study was to investigate the effects of insoles and additional shock absorption foam on the cushioning properties of various sport shoes with an impact testing method. Three commercial sport shoes were used in this study, and shock absorption foam (TPE5020; Vers Tech Science Co. Ltd., Taiwan) with 2-mm thickness was placed below the insole in the heel region for each shoe. E...
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تاریخ انتشار 2013