By using elastic stability theory and in combination with field work,a method in calculating space when installing sucker rod lifter is worked out and an example is provided.

And a quantitative approach is also provided to determine the elastic stability and survival ability of the single-pile wellhead while the future wellhead retention operation above the seawater is goi.

Based on the principle of energy,the paper discusses the elastic stability of high pier with non-uniform section.

It has been concluded that the inner loop of a three-loop autopilot is an attitude autopilot,it can make an unstable missile stable;missile aerodynamic coefficient change and fin control surface bias do not have effects on the steady state outputs of three-loop autopilots.

Study on the elastic stability of bottom holes assembly with controllable eccentric stabilizer and its application;

Study on critical load and elastic stability of drilling riser;

Elastic stability of open end cylindrical shell arising from shell hydroformng is studied by the nonlinear elastic stability theory.

Modeling study on tilt-rotor's aeroelastic stability in cruise flight

The multi-body analysis of the aeroelastic stability of the tiltrotor aircraft is presented.

This paper addresses the developed structural modeling and aerodynamic modeling of aeroelastic stability analysis software for rotor blade with new tip.