Energy absorption characteristics of thin-walled steel and FRP hybrid structure - influence of hybrid structure conditions on maximum force and energy absorption

摘要

For the coexistence of improvement and lightening of the collision safety, we devised a hybrid type structural material for energy-absorption. It was reported that impact energy absorption characteristics of a hybrid structure increased to about 1.7 times that of the conventional structure in the previous report. However, the increase of maximum force remains as a future issue to be dealt with. A hybrid structure which was able to decrease the maximum force with the energy absorption characteristic improved - was manufactured, and the performance was confirmed with an impact test. And, we examined the effect of foam on the energy absorption characteristics. The following results have been realized. 1. The maximum force can be made to be the same as the conventional structure, and improve only the energy absorption characteristic. 2. There is no difference in the energy absorption characteristic in the foam at magnifications of 50 fold and 20 fold.