ハニカムパネルの曲げ加工方案の研究

概要

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Welded (brazed) honeycomb panels, which had been newly developed as light weight but rigid aluminium structural members, were experimentally subjected to press bending. Square panels were bent into spherical shape. As a result of detailed examinations of the panels under bending operation, the press bending procedures have been established. Several problems relevant to honeycomb panel bending are discussed. Flexible radius dies were invented and used with the spherical radius of 2 metres. Panel dimensions were ; about a metre square, 20, 30 and 40 mm high, 1 mm thick face sheets, cell size of 20 mm, 0.2 mm thick core. Experiments showed that the panels were able to be successfully bent by press bending, provided that necessary precautions were paid carefully. Numerical simulation of press forming honeycomb panels was carried out using the programme called DYNA3D. The outcomes agreed well with experiments and supplemented the test results, thus making it possible to develop press bending procedures.
社団法人日本船舶海洋工学会の論文