The finite element method is applied to simulate the cold expanding of the joint as well as the bell and spigot fitting process of internal and external pipes, therefore to determine the interference and overlapping length, analyze the joint forces and give the uniform strength condition of joint and pipe.

The analysis results show tha t the larger interference between the spindle and the toolholder or a higher draw bar force is benefit to improving th.

Analysis and experiment of the optimum shrink range between chain plate and bush for agricultural machinery chain by using finite element method;

The research on amount of interference for shrink-on cylinder;

The article analyzes characteristics and abrasion factor of leather cap type pig according operation feature, and then proposes reasonable magnitude of interference.

The maximum and the minimum magnitude of interference of the shield canister and the magnet steel hoop are calculated,and the shield and the magnet steel hoop are fitted by shrin.

By reducing the hydraulic oil pressure of the grinding roll in operation,enhancing the magnitude of interference fit between the roll core and the roll ring,and increasing the junction area between .