S114023 温度環境の変化による巻取りロール内部の非定常熱応力の測定([S11402]機素潤滑設計部門第17回卒業研究コンテスト(2))

概要

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Thin and flexible continuous medium such as paper or film is called web. The web is supported by a number of rollers and conveyed, finally wound into a roll. Afterward the wound roll will be conducted heat treatment or transportation. As environmental temperature change during the heat treatment or transportation, internal stress of wound roll will be changed over time. If the internal stress of a wound roll is altered, defects such as slippage or wrinlding are generated. To prevent these defects, it is necessary to make prognostication of unsteady stress inside the wound rolls cowed by temperature environment change. In this study, thermal stress predict of wound rolls was measured under temperature change conditions, and the effectiveness of thermal stress analytical model was verified. As a result, radial stress was found to be increased with the ambient temperature increases winding roll. Meanwhile, tangential stress was decreased to negative values near the inner layer. In addition, the results of measurements and thermal stress analysis were, coincide and we confirmed the validity of the thermal stress theoretical model.
一般社団法人日本機械学会の論文
2011-09-11