노치 ( Notch )를 가진 試片의 有限要素法에 의한 彈塑性 極限 荷重解析

Elacstic-\Plastic Limit Load Analysis of Notched Specimen by the Finite Element Method

Many papers have shown limit loads of v-notched tension specimens in plane stress by the elastic-plastic finite element method. But they are always higher than the theoretical maximum loads. The present approach tries to find the reasons and formulates correction factor applicable to any notch shape using virtual work principle with triangular elements. The corrected limit loads are in good agreement with theoretical upper bound solutions and they are little influenced by mesh size and specimen length, which make the computing time save.