Design of slab-column connections under combined vertical force and unbalanced moment;

Considering the interaction of raft foundation and ground base,using the finite element calculation method of ADINA to analyze the punching shear performance, failure law of raft foundation central column and distribution state of ground base reaction force of the bottom of raft slab under combined action of vertical load and unbalanced moment.

An analysis method for the connections of prestressed concrete slab to interior column under shear and unbalanced moment is proposed in this paper by applying the plastic limit state theory.

By the discussion of the nonlinear responses of plane frames excited by earthquake waves and based on the internal characteristic of displacement and force of RC frame that result in the change of joint moment equilibrium manner, the variation of structural dynamic elastoplastic responses owing to the local time - frequency properties of earthquake waves is studied in this paper.

In this paper,basis on mechanical structure of certain minor caliber multiple launch rocket system and tactical demand of air defense and antimissile,it is analyzed in detail that friction torque,unbalanced moment,impact moment of burning gas flow and variable rule of moment of inertia,which provide the foundation for more research of position servo system of multiple launch rocket system.

A measurement and compensation method was proposed in order to eliminate the coupling effect on tracking accuracy and stabilizing capability due to unbalanced moment of inertial platform.