Study on critical load and elastic stability of drilling riser;

A calculating method of critical loading for dual-extension hydraulic legs of hydraulic powered supports;

Supporting-displacement-based critical load calculation for jib strings of rubber tired gantry cranes;

Analysis of critical load for lateral buckling of beam;

Lateral-torsional buckling critical load under the effect of I-type member s transverse concentrated load;

Study of critical loads of thin-walled cylinder pressure vessel with crack;

According to the thin shell plastic stability theory, based on the plastic instability coefficients and energy rule,the theoretical for calculating critical loads of plastic wrinkling on the ends of the hydroformed tube is establ.

The first three critical loads and corresponding bifurcation solutions are calculated.

The buckling critical loads are obtained with varying holes.

Calculation method on buckling critical loads for welding aluminum alloy beam;

The modes of instability and the critical loads at critical condition are obtained.

If these elastic restraints action of buckling resistance is taken into account the critical loads of steel members may apparentely been increased and plenty of steel material is saved.

The least critical loading of composed annular plates is reducing as the join radius is (increasing,)and is increasing as the ration of E_1/E_2 is increasing,but their va.

Geometrical parameter c=a/b of annular plates is primary factor that the critical loading of shear buckling is affected by it.