Adhesive contact model between an elastic cylinder and an elastic half space is studied in the present paper, in which an external pulling force is acted on the above cylinder with an arbitrary direction and the conta...Adhesive contact model between an elastic cylinder and an elastic half space is studied in the present paper, in which an external pulling force is acted on the above cylinder with an arbitrary direction and the contact width is assumed to be asymmetric with respect to the structure. Solutions to the asymmetric model are obtained and the effect of the asymmetric contact width on the whole pulling process is mainly discussed. It is found that the smaller the absolute value of Dundurs＇ parameter 13 or the larger the pulling angle O, the more reasonable the symmetric model would be to approximate the asymmetric one.展开更多
讨论了一类高阶中立型多时滞差分方程Δd(x(n)-p(n)x(n-k)+q(n)multiply from i=1 to ∞|x(n-σi)|αsgnx(n-σ1)=0,n=0,1,…的振动性,获得了方程在sum from i=1 to mαi=1条件下振动的一个充分条件,同时又给出该方程非振动解趋于零的...讨论了一类高阶中立型多时滞差分方程Δd(x(n)-p(n)x(n-k)+q(n)multiply from i=1 to ∞|x(n-σi)|αsgnx(n-σ1)=0,n=0,1,…的振动性,获得了方程在sum from i=1 to mαi=1条件下振动的一个充分条件,同时又给出该方程非振动解趋于零的判据。展开更多
In this paper, we consider a certain forced higher-order nonlinear neutral difference equation. By using Krasnoselskii’s fixed point theorem and some new techniques, we obtain necessary and sufficient conditions for ...In this paper, we consider a certain forced higher-order nonlinear neutral difference equation. By using Krasnoselskii’s fixed point theorem and some new techniques, we obtain necessary and sufficient conditions for the existence of non-oscillatory solutions for the system. Our results extend the results of Zhang [5].展开更多
基金supported by the National Natural Science Foundation of China (10672165, 10732050, 10721202)KJCX2-YW-M04, CAS Innovation Program and Start Fund for Returning Overseas person
文摘Adhesive contact model between an elastic cylinder and an elastic half space is studied in the present paper, in which an external pulling force is acted on the above cylinder with an arbitrary direction and the contact width is assumed to be asymmetric with respect to the structure. Solutions to the asymmetric model are obtained and the effect of the asymmetric contact width on the whole pulling process is mainly discussed. It is found that the smaller the absolute value of Dundurs＇ parameter 13 or the larger the pulling angle O, the more reasonable the symmetric model would be to approximate the asymmetric one.
文摘讨论了一类高阶中立型多时滞差分方程Δd(x(n)-p(n)x(n-k)+q(n)multiply from i=1 to ∞|x(n-σi)|αsgnx(n-σ1)=0,n=0,1,…的振动性,获得了方程在sum from i=1 to mαi=1条件下振动的一个充分条件,同时又给出该方程非振动解趋于零的判据。
基金This work is supported by the KEY Project of Chinese Ministry of Education.
文摘In this paper, we consider a certain forced higher-order nonlinear neutral difference equation. By using Krasnoselskii’s fixed point theorem and some new techniques, we obtain necessary and sufficient conditions for the existence of non-oscillatory solutions for the system. Our results extend the results of Zhang [5].
