Abstract
The products are needed to function under various outdoor circumstances. In some cases, they have to resist hail impact. It is difficult to reproduce hail impact because hail falls at a speed of dozens meters per second. If the stress by the hail impact is obtained analytically, it is useful for reliability design against hail. In this study, the stress evaluation of the glass hit by ice ball using impact analysis was performed to predict the stress hit by the hail. As a result, it is concluded to predict the stress hit by ice ball using impact analysis regarding ice ball as elastic perfectly plastic solid.