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.

Taken queuing theory as theoretical model,a closed-form solution to the critical load leading the network congestion and the betweenness of the topology attribution in networks was obtained.