防撓せる板の有效幅 : 一.基礎的考察

概要

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In the practical strength calculations of stiffeners, beams, frames, etc. fitted to plates, we usually take into consideration some so-called "effective breadths, " in order to make up the unsuitable assumptions in the ordinary beam theory and to meet the actual behaviors of the plates. So far, the full nature of the effective breadths, however, has not been brought into light, and necessarily some empirical and hypothetical rules have hitherto been employed. The author gives a theoretical method to determine the effective breadths, referring, as an example, to the plate of infinite breadth with a flat-bar stiffener carrying any given load, and also gives some notes connected thereto. In the method, every panel in the structure under consideration is to be treated separately, as domains of the systems of "stresses due to bending" and "stresses in plane, " having special boundary conditions by which all the systems are united to form the whole stress system of the structure. The boundary conditions are derived in a reasonable manner and their validities are exemplifiled by some experiments. The applications of the method to the cases of usual plates with parallel stiffeners are remained to be dealt with in detail in the subsequent section of the auther's papar.
社団法人日本船舶海洋工学会の論文
1934-11-20