Thermal analysis for a part manufactured by additive manufacturing by studying the paths of tools

A method of determining the thermal behavior of a part for the production by additive manufacturing using at least one tool, comprising, for a set of points of a path of said tool intended for said production, steps implemented by a processing unit of an optimization device (100) of:

• determining (S1) values of a set of primary parameters relating to said additive manufacturing production;
• determining (S4, S5) values of a reduced set of dimensionless parameters, as a function of the values of said set of primary parameters and a correlation function linking said dimensionless parameters;
• generating (S6) a heat map for at least one layer of said part, as a function of said dimensionless parameters, said heat map being recorded in digital format and associating a value representative of a temperature with said points,
• determining at least one risk zone within said heat map;
• adapting at least one parameter of said tool (200) as a function of said at least one risk zone, said at least one parameter optionally being a parameter of said path.