DCB SPECIMEN;
TIMOSHENKO BEAM;
WINKLER FOUNDATION;
POTENTIAL ENERGY RELEASE RATE;
D O I:
10.1163/156855195X00203
中图分类号:
TB33 [复合材料];
学科分类号:
摘要:
A double cantilever beam (DCB) specimen is analyzed by utilizing a Timoshenko beam supported by an elastic foundation with an extensional stiffness. The deflections and stresses of the DCB specimen are compared with the results based on the other beam models as well as the potential energy release rates. It is found that the present results for graphite-epoxy composites are as accurate as those by Whitney using a higher order beam theory.