近似三次元理論による直交積層板の衝撃応答解析

概要

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The CFRP laminated plate [0_6/90_6] sym under impact was analyzed by means of an approximated three-dimensional theory similar to that shown for the isotropic laminated plate. The impact force history due to the elastic sphere is analyzed by means of the Hertzian contact theory. In the experiment, the plate was impacted by steel spheres of φ5 mm and φ10 mm with almost equal impact energy by use of an air gun. The delamination of each interfacial boundary was observed with an ultrasonic microscope. The total amount of damage was larger for a smaller inpactor under equal impact energy. To explain this experimental result theoretically, the out-of-plane stresses on the interfacial boundaries were calculated. Theoretical results show good agreement with the tendencies of experimental results.
一般社団法人日本機械学会の論文
1993-03-25