In this paper, some new oscillation criteria for a second order nonlinear differential equation with dampings are established. These criteria improve and generalize the related results given in [1-4].
With the rapidly increasing use of composite materials, a great deal of interest in the interface crack has been generated among the technicians, metal physicists and materials scientists. To the authors’ knowledge, ...With the rapidly increasing use of composite materials, a great deal of interest in the interface crack has been generated among the technicians, metal physicists and materials scientists. To the authors’ knowledge, many researches on this subject have been taken. However, they are usually applied to two-dimensional cases. For the three-dimensional ones, very few analyses have been done because of the great complexity on mathematics and mechanics. In this study, based on the point-force solutions for two perfectly展开更多
基金The Project supported by the Science Foundation of Yunnan State Education Commission
文摘In this paper, some new oscillation criteria for a second order nonlinear differential equation with dampings are established. These criteria improve and generalize the related results given in [1-4].
基金National Natural Science Foundation of Chinathe National Ph.D. Foundation
文摘With the rapidly increasing use of composite materials, a great deal of interest in the interface crack has been generated among the technicians, metal physicists and materials scientists. To the authors’ knowledge, many researches on this subject have been taken. However, they are usually applied to two-dimensional cases. For the three-dimensional ones, very few analyses have been done because of the great complexity on mathematics and mechanics. In this study, based on the point-force solutions for two perfectly
