スポット溶接によるフレーム材のねじり剛性の評価法 : 第2報, ねじり剛性評価式

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The control of vibration level which an operator is exposed is the focus of recent attention towards the improvement of quality of vehicle-type construction machinery. Especially in the stage of the concept design for this type of machinery, designers have been investigating the vibrational dynamic behavior of a cab using simplified finite elements to reduce the vibration level to which the operator is exposed. However, because the cab has been formed by spot-welded and pressed thin steel plates, and designers have not been able to evaluate its torsional rigidity precisely without an experimental approach, evaluation errors in the model have been a hindrance to the development of a cab from the viewpoint of vibration control and reliability. Therefore evaluation techniques are required in the engineering field of cab design to establish an appropriate model of its structure. In this paper, we suggested to correct the torsional rigidity, that was calculated on the assumption that the beam having spot weldings had a closed section, in order to determine the rigidity of the semi-open section. In order to determine this correction coefficient using values representing the structure of a beam having spot weldings, we obtained relationship between the correction coefficient and the values representing the structure and to predicted the correction coefficient with an expression of multiple regression analysis.
一般社団法人日本機械学会の論文
1996-08-25

スポット溶接によるフレーム材のねじり剛性の評価法 : 第2報, ねじり剛性評価式

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