Our Technologies

NUMERICAL MODELING OF WELDING PROCESS (BIM-33)

Welding process has a considerable impact on material involved because of changes of state (melting, solidification, in some cases even vaporization). This results in extreme difficulty in determining final characteristics of the component in terms of both geometric (for example the residual distortion) both of mechanical properties.
Traditional approach is a long iterative "trial and error" process which is based on experience of qualified personnel. Lack of reliable instruments for shape and mechanical properties prediction of the final component increases time and costs of production and greatly limits production capacity and flexibility of enterprises.
Using advanced techniques of numerical modeling is possible, however, to provide such features without having to do actual experiments, occupying therefore business machinery and taking them away from ordinary activities of production.
CETMA has skills and tools to define, depending on material and type of welding considered, the calculation model and to implement it in computer codes; this allows predictive analysis or optimization of the component, with confidence and definition level according to structure complexity and required performance.
In the field of numerical modeling of welding processes, there are no universal solutions applicable to every analyzed problem. CETMA in its multi-disciplinary and multi-year experience on technologies and on different types of materials, has collected a wide range of data and specialized information not readily available that allow to calibrate and validate numerical models dealing with more confidence simulations of welding processes.
Know-how developed can be applied to all sectors in which is required the construction of components by welding processes on both conventional and innovative materials or, in general, thermo-mechanical processes that entail change of state phenomena such for example fusion processes.
Main application field is undoubtedly transport industry sector: aerospace, aviation, automotive, marine and rail.