856 実験的手法による偏荷重を受けるマンホール蓋の応力分布に関する研究(材料力学V)

抄録

The major part of stress analysis for a manhole cover is the numerical analysis. The experimental analysis was rarely done recently. In this research, the experimental analysis was done for the manhole cover using the three dimensional stress freezing method. The stress concentrations were confirmed at the edge of the load and the edge of the cover. With the numerical analysis, we confirmed the stress concentrations almost same as the experimental analysis. It has been understood that careful corresponding is necessary in the shape and size of the volume fillet surface in the safety design.