An Analysis of Reaction Forces in Crankshaft Support Systems

During measurements, the crankshafts of marine engines are usually supported on a set rigid prisms. Such prisms maintain constant height position, cause different values reaction forces and, consequently, may elastic deformations crankshafts. Thus, measurements dimensions and geometry crankshaft be distorted. This article proposes measuring system developed to support with flexible supports. These supports implemented given forces, which ensured elimination deformations, regardless possible deviations, i.e., in coaxiality main journals. The these were calculated using finite element method (FEM). calculations showed that order eliminate must change not only individual supports, but also shaft rotation angle during measurement. numerical experiments application results uniform contact adjacent journal uniformity occurs quality geometry. necessity use for engine was confirmed. research ensuring deflections under assumption nodal can treated as corresponding resultant realized by prismatic heads.