Abstract: Because numerical simulation of welding is difficult to be performed in ordinary manufacture enterprise, distributed networked numerical simulation system of welding is proposed according to the characters of industry. The framework of the system is established and the main functions are presented. The real welding process is simulated numerically by using the system, and the result shows that customers can perform welding simulations without major skills by this system. The system proposed may simplify the complex process of numerical simulation, increase the efficiency, reduce the manufacture cost of welded structures, and improve the agility and competition ability of the enterprise.

Key words: Distributed networked, Numerical simulation, Welding, crack propagation, Damage identification, residual life, Strain mode, Vibrating screen beam