The axisymmetric steady state deformations of an infinite cylindrical rod made of a rigid/perfectly plastic material and striking a known cavity in a rigid target are analyzed by the finite element method. The contact between the deforming rod and the target surface is assumed to be smooth. It is found that the axial force experienced by the rod depends strongly upon the square of its speed. Re...

We show that the well–known NUT solution can be correctly interpreted as describing the exterior field of two counter–rotating semi– infinite sources possessing negative masses and infinite angular mo-menta which are attached to the poles of a static finite rod of positive mass.

Abstract We provide resolvent asymptotics as well various operator-norm estimates for the system of linear partial differential equations describing thin infinite elastic rods with material coefficients that rapidly oscillate along rod. The is derived simultaneously respect to rod thickness and period oscillations, which are taken be same order. analysis carried out separately on two invariant ...

To ensure the safety of bridges during horizontal rotation, we propose a method through which it is possible to evaluate stability structures in real time by measuring vibration acceleration rotating structure. First, characteristics collected rotation typical high-speed railway bridge were compared with results finite element analysis. Second, analytic formula calculate ratio and pier-bottom-s...

electrostatic potential as well as the local volume charge density are computed for a macromolecule by solving the poisson-boltzmann equation (pbe) using the finite element method (fem). as a verification, our numerical results for a one dimensional pbe, which corresponds to an infinite-length macromolecule, are compared with the existing analytical solution and good agreement is found. as a ma...