光塑性実験におけるひずみ凍結に関する基礎研究 : 二軸応力場におけるひずみ-しま次数関係

概要

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Recently, to clarify the mechanism for material deformation during plastic working and to outline the guidelines for plastic design, it is necessary to develop the methods of stress-strain analyses in the elastoplastic and plastic states. In the previous paper, the authors attempted to find a possible strain freezing method in photoplastic experiments, and the results showed that a very fine linear relationship is maintained between the isochromatic fringe order N and principal strain difference (ε_1-ε_2) over a very wide range under the uniaxial tensile stress state. In this paper, we discuss the type of relationship between the fringe order and principal strain in the biaxial stress state. The discussions on the results obtained are based on the Moire method and photoplastic method in the use of the strip sheet and cross-type specimens of polycarbonate.
一般社団法人日本機械学会の論文
1990-05-25