COMPUTINGS INVOLVED IN CHECKING SHAFTING ALIGNMENT TO MEET THE REQUIREMENT FOR BEARINGS LOADS BY JACK-UP METHOD

Abstract

The article presents the theoretical basis of shafting alignment, establishes a system of equations for calculating the bearing reactions when knowing the dimensions and loads on the shafting, the arrangement, initial off-sets and the stiffness of the bearings; matrix of influence coefficients; measuring procedure and conditions for determining the bearing reactions and off-sets of the bearings after the shafting has been preliminarily installed; Algorithm and necessary conditions to determine the stiffness of supports using the Symbolic Stool Box of Matlab. In addition, the article also briefly presents the results of the programs to calculate the stiffness and reactions of the bearings, as well as the deflection line of the shafting when the Jack up results are available, where data of the shafting is taken from a ship with 4 RTA 62U engine built at Ha Long shipyard.SSSSSSSSSSSDDDDDDDDDDDDDDĐSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS