プリンタの耐震設計の研究 : 有限要素法適用のためのモデル化

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With rapid development of computers and the peripheral equipments, they are unavoidable to be used under severe circum-stances such as high temperature changes, electrical noises, mechanical vibrations and shocks. In view of the recent situation where airplanes and automobiles are widely equipped with such devices, the mechanical vibrations and shocks are, in particular, inevitable factors on the evaluation of the performance of such devices. One of typical output equipments supposed to be used in hard environments is a printer. This is apt to produce disordered characters in its figure and shade of color in severe circumstances. This paper aims to have a clue for optimum design of its anti-vibration structure, resulting in characters with high quality. For numerical analysis, a Finite Element Method (FEM) is applied. The condition of distribution of elements and the way of deciding constraints at nodes must affect the numerical results. So, the authors assumed several combined models to judge the adequateness of such modeling by comparing them with the experimental results. The condition under which the results obtained by FEM such as the natural frequencies, natural vibration modes and transmissibility coincide with the experimental ones is expressed as follows; The contact part of the lower and upper cases could be treated as connected rigidly as well as ribs which connect the both cases to strengthen the structures. It is also clarified in this paper that the analysis by FEM with considerably rough distribution of divided elements is enough for the comparison with the experimental results.
社団法人日本時計学会の論文
1988-03-20

プリンタの耐震設計の研究 : 有限要素法適用のためのモデル化

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