@article{oai:jaxa.repo.nii.ac.jp:00031506,
 author = {福田, 博 and 河田, 幸三 and FUKUDA, Hiroshi and KAWATA, Kozo},
 issue = {3_A},
 journal = {東京大学宇宙航空研究所報告},
 month = {Jul},
 note = {複合材料の繊維端末部から生じるクラックの発生と進行の模様について,有限要素法による数値実験を行なった.二つの破壊基準を用いることにより,モデル実験であらわれた二つの破壊のパターンを作り出すことができた.隣接する繊維がクラックの進行をとめる作用をするかどうかも検討した., When a tensile loading is applied to a unidirectionally reinforced material including a discontinuous fiber by imperfect processing, a crack initiates at .the neigh-borhood of the end of the broken fiber and it propagates in the matrix. The crack propagates either 1) in the direction perpendicular to the fiber axis or 2) along the interface of the fiber and matrix. In the present paper, the above-mentioned patterns of crack propagations are simulated using finite element method under the assumption of the matrix being elastic and brittle. Interfacial shear stress and maximum principal stress are used for the fracture criteria of the matrix. The facts that the former corresponds to 1) and the latter to 2) are found. The numerical results showed the same patterns of fractures as those obtained by experiments., 資料番号: SA0124408000},
 pages = {464--470},
 title = {不完全加工複合材料の破壊},
 volume = {10},
 year = {1974}
}