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排序方式: 共有3119条查询结果,搜索用时 15 毫秒
191.
The bifurcation instability problem for cylindrical shells made of particulate composites with nonlinear elastic matrix and
damaged inclusions is formulated and solved
__________
Translated from Prikladnaya Mekhanika, Vol. 43, No. 8, pp. 80–91, August 2007. 相似文献
192.
V. I. Fabrikant 《Zeitschrift für Angewandte Mathematik und Physik (ZAMP)》2006,57(3):464-490
The contact problem for an arbitrary punch acting on a transversely isotropic elastic layer bonded to a rigid foundation is
solved by the generalized images method developed by the author earlier. The problem is reduced to that of an electrostatic
problem of infinite row of coaxial charged disks in the shape of the domain of contact. The solution can be obtained by the
method of iteration, collocations or any other standard procedure for solving integral equations. Exact inversion can be obtained
in the case of a circular domain of contact. The mean value theorem can be used for estimation of the resultant force and
tilting moment acting on a punch of arbitrary shape and circular domain of contact. A limiting case of general solution gives
the solution for an isotropic layer.
(Received: August 11, 2003) 相似文献
193.
This paper treats the plane-strain free-boundary problem describing the equilibrium of a closed cylindrical non-linearly elastic membrane that contains a heavy liquid and a weightless compressible gas and that sits upon a rigid horizontal plane. The material points of the membrane in contact with the rigid plane, the liquid, and the gas are unknowns of the problem. We carefully formulate the geometrically exact equations, and then show that solutions must have attractive regularity, symmetry, and similarity properties, which are not intuitively obvious. There is an interesting interplay between the material behavior and the live pressure loadings generated by gases and heavy liquids. The properties of the equilibrium states depend crucially on the material behaviour of the membrane. In particular, for certain materials the number of equilibrium states changes abruptly as certain parameters describing the liquid and gas change. Thus the system can suffer instabilities of snapping type (with their attendant hysteresis effects), which we term slumping instabilities. 相似文献
194.
本文叙述一种具有六弹簧弹性支承悬臂离心机的一种快速整机动平衡技术的原理和方法。本文提出的方法系根据模态平衡原理,但并不需要预先获得各阶模态曲线。本文还叙述了单测点平衡以及同时进行高、低速平衡的原理和方法。经此方法平衡后的离心机,能在整个操作转速的范围内平稳地运转。 相似文献
195.
196.
B. Mukeru 《中国物理C(英文版)》2023,47(2):024104-024104-5
An analysis of the breakup of the \begin{document}$ ^{31}{\rm Ne} $\end{document} ![]()
![]()
weakly-bound neutron-halo system on a lead target is presented, considering the \begin{document}$ 2p_{3/2} $\end{document} ![]()
![]()
and \begin{document}$ 1f_{7/2} $\end{document} ![]()
![]()
ground-state configurations. It is shown that a high centrifugal barrier almost wipes out the breakup channel, thus assimilating the breakup of a weakly-bound system to that of a tightly-bound system, and also reduces the range of the monopole nuclear potential. Consequently, a high centrifugal barrier prevents the suppression of the Coulomb-nuclear interference (CNI) peak by weakening couplings to the breakup channel and reducing the range of the monopole nuclear potential, two main factors that would otherwise suppress such a peak. The present study also identifies couplings to the breakup channel and a long-ranged monopole nuclear potential as the main factors that lead to the suppression of the CNI peak. A low centrifugal barrier together with a Coulomb barrier would also effectively prevent the suppression of the CNI peak in proton-halos as reported in the case of the \begin{document}$ ^8{\rm B} $\end{document} ![]()
![]()
proton-halo. 相似文献
197.
198.
199.
柔性系统力学中的主要课题 总被引:4,自引:0,他引:4
本文对多刚体系统力学的研究结果进行简要的小结,介绍了柔性系统的力学模型以及该领域中的主要研究课题. 相似文献
200.
ELASTICPULSEBUCKLINGOFCYLINDRICALSHELLSUNDERRADIALIMPULSIVELOADINGHuangChengyi(黄承义)LiuTuguang(刘土光)ZhengJijia(郑际嘉)(Departmento... 相似文献