Performing Mode Superposition Harmonic Analysis Using Ansys Mechanical Lesson 1

The harmonic response analysis determines the steadystate response of a structurethat is subjectedto loadsthat vary sinusoidallyovertime. Thisenablesusto verifywhetherthedesigns will successfully overcome resonance, fatigue, and other harmful effects of forced vibrations. There are two ways to solve harmonic response analysis including the full harmonic and mode superposition methods. In both methods, all loads must be sinusoidally timevarying and must have the same frequency, nonlinearities are not permitted, and transient effects are not calculated. The modesuperposition method sums factored mode shapes from a modal analysis to calculate the structures response. This method is faster and less computationally intensive than the full method. The solution can be clustered about the structures natural frequencies providing smoother results and more accurate tracing of the response curve. Prestress effect and