Through combining the actual condition of the piping layout of offshore platform and calculating the unbalance force caused by pulse,it confirms the method is the best.

Unbalance forces of the engine is the main reason for vibration of motorcycles.

On unbalanced forces in 3D elasto-plastic FEM analysis;

Under the action of a given load the area where unbalanced force area existed is the location of initial failure occurred.

The main ingredient of the theory is that the unbalanced forces of a deformable body in elasto-plastic elaborated.

Based on the concept of constraint-equilibrium in non-equilibrium thermodynamics, deformation reinforcement theory,which analyzes the mechanical behaviors of unstable structure with unbalanced forces exceeding the yield surface,is presented.

It points out that under the given external loads,the area which comes to unbalanced forces is the first place to be destroyed in the structure.

This paper introduces multirope friction winder appear steel wire rope strain imbalance phenomena in using,and harm to strain imbalance of steel wire rope,and analysis produce reason of strain imbalance,accordingly pertinence put forward eliminate strain imbalance of multirope friction winder steel wire rope method.