ESTABLISHMENT OF A DESIGN-BASIS SPECIFICATION FOR A DEVICE FOR A TURBOMACHINE STRUCTURE

The invention relates to a method for establishing a design-basis specification for a device to be mounted on a turbomachine structure, such as a case, said method comprising the following steps: - selecting (S8) an incident that may occur on the structure, such as the loss of a turbomachine rotor element; - simulating (S14) the presence of the device on the structure, at a mounting point, using a mechanical oscillator having at least one natural frequency (ƒ0) and at least one damping ratio (ξ ); - varying the natural frequency and/or the damping ratio according to at least two values; - determining (S18) a design-basis acceleration of the mechanical oscillator in response to the incident for each of the values of the natural frequency and the damping ratio; - delivering (S20) the specification comprising the design-basis accelerations and the corresponding natural frequency and damping ratio values.