Based on the instances of turning or grinding spindly shaft and the theory on tiny vibration ofelastomer, this paper educes the natural mode of vibration in the process of typically machining, analyzes its eff-ect on the formation of surface corrugation, puts forward the measure against surface corrugation.

Nonlinear natural vibration of monolayer cable net point-supported glass curtain wall;

Similarities in natural vibration of stiff cable structures and truss arch structures;

Nonlinear natural vibration of cable-truss of steel netlike roof;

An approach was put forward in which inherent resonance controlled at less than 130Hz by pu.

The transfer matrix method, which is usually used in solving the problems of natural frequencies and natural modes in engineering,is also used in the present paper to find the solution to the transverse free vibration of continuous equispan beams on elastic springs.

The asymptotic solution for second_order,linear,homogeneous equation with large parametes is used and the longitudinal natural vibrations of viscoelastic straight rods with variable sections are analyzed.