Influences of Collared Ribs and Core-Holes on the Static Stiffness of Cylindrical Column : Study on the C.A.D for Machine Tool Structures, Part 1

概要

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In the Computer Aided Design for a machine tool structure being developed, there are two important problems to be solved to compute the overall stiffness of a machine tool. One is the limitation of the core size of computer, which affects largely the computing accuracy. Another is how a machine tool structure is replaced by a suitable model available to the computation with good propriety. To make some countermeasures for these problems, one trial of CAD was carried out here with the cylindrical column having collared ribs and core-holes. From the results, it can be concluded that the cylindrical column in closed cross-section is well replaced by an one-dimensional beam-like element notwithstanding the existence of collared ribs and core-holes. This means that there may be some possibility of a new CAD technique to solve the present problems. In addition to this investigation, the effects of collared ribs and the influences of core-holes on the static stiffness of cylindrical column have been also described here.
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