Abstract
Mechanical behavior of a bolted joint subjected to a rotational loading and a combined loading of a rotational and a transverse load is investigated. It is confirmed that the joint behavior obtained using the proposed analytical model reproduces that obtained by FEM analysis. As to the rotational loading case, the thread surface undergoes complete slip and bolt rotates in the loosening direction in the loosening process while the bearing surface undergoes complete slip and bolt does not rotate in the tightening process. As to the combined loading case in which the joint is subjected to rotation angle of 0.12 degree and transverse displacement of 0.04 mm, the progress of loosening decreases because the bolt rotates in the tightening direction in the tightening process.
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