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There has been substantial development in computer codes for three-dimensional linear hydroelasticity, but to the authors’ knowledge, there are no problems of sufficient complexity put forth in the open literature to serve as appropriate benchmark problems for a floating structure. We present in this paper detailed descriptions of two such problems for three-dimensional hydroelastic computer codes. The first structure is a rectangular, box-shaped “barge” with dimensions 100 m×10 m×2 m. The second is a Wigley hull with dimensions 100 m×10 m×4.5 m. In both cases, the deformational response is primarily global. Detailed descriptions of each structure, the finite element structural shell models, and the hydrodynamic fluid models, based on the constant panel Green’s function method, are provided. Fine meshes are used to minimize discretization errors. Detailed results, including dry natural periods and modes, wet natural periods, and wave-induced displacements and stresses, are presented. The detail is sufficient for others to use the problems as benchmarks for computer codes.

The purpose of this study is to present the evaluation method of contact resistance between hands and building elements from the view point of safety. In this repot, we firstly carried out sensory test, to make the evaluation scales of posture keeping in slipperiness with hands. Next, we developed the slip meter that could measure the slip resistance of plane samples. Then, coefficients of slip resistance of the plane samples by various slider materials, shapes, vertical loads and pull speeds are searched with the slip meter. Also, the relations are investigated between slip resistance and evaluation scales of posture keeping in slipperiness. As a result, we presented main points of measurement method of slip resistance of building elements and members with hands.

The purpose of this study is to propose the evaluation method of the contact resistance of the hand targeting handrails from a safety perspective.First, sensory tests for making scales of operation support were carried out with handrails. Next, the investigation tool that could measure a contact resistance of the hand targeting handrails was developed which was based on the scales and the mechanism of hand. And then, the evaluation indexes which were the relation between a measured value with this investigation tool and those scales were presented.

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