著者

神宮 利夫

出版者

公益社団法人 精密工学会

雑誌

精密機械 (ISSN:03743543)

巻号頁・発行日

vol.41, no.482, pp.280-286, 1975-03-05 (Released:2009-06-30)

参考文献数

3

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It has been experimentally suggested that the plastic deformation beneath any indenter is similar in pattern to the stress distribution obtained by the theoretical elastic analysis. When it is attempted to theoretically analyze the stress distribution beneath the wedge and the circular cylinder indenters, it is seen that the discontinuity occurs in the process of analysis. But, the logical development is revived the validity by introducing the result of rectangular block into the analysis. This paper is to be said that such an approach is useful for the stress analysis of two dimensional indentation.

著者

神宮 利夫 永倉 和郎

出版者

一般社団法人日本機械学会

雑誌

日本機械学會論文集. A編 (ISSN:03875008)

巻号頁・発行日

vol.57, no.544, pp.3069-3076, 1991-12-25

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A robotic manipulator is simplified by numerous beams with pinjoints between them and an anchor pinjoint at the base. The beams under impact loading are allowed to rotate about the axis of the pinjoint. The dynamic response of a vertical chain for a transverse load suddenly applied along every beam is theoretically analysed. The angular and linear acceleration of the mass center of beams, reaction force at the pinjoints, shearing force and bending moment along the beams is presented as a function of impact load. As the vertical chain consisting of one plaster beam and one steel beam, or two with a pinjoint between them, is subjected to the collision of the flier steel rod accelerated by the air gun, the location of the fracture of the plaster beam is measured experimentally. The validation of the theory is confirmed by comparison of the location of the critical bending moment with the position of the fracture of the beam.