有限要素法による舶用機関部品の応力解析

概要

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In general, the finite element method makes it possible to know the detailed deformation and stress distribution in a structure of complicated shape and boundary conditions, making a calculation model relatively similar to the actual structure and therefore, is expected to be an effective alternative for experimental means requiring comparatively enormous expense and labour. Six kind of numerical structural analyses were carried out on marine machineries with the finite element method, that is, deformations and stress distributions in a turbine rotor subjected to inertia force, piston crown to pressure and thermal load, crank shaft to initial shrinkage force and cylinder liner to thermal load, and stiffness of a crank shaft. In this paper, their calculated results are described and considered, compared with their analytical or experimental ones. It is concluded from the calculations and considerations that the deformations and stress distributions in the former four marine machineries and the stiffness of the last one can be well predicted with the numerical method based on the finite element method.
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