Multiharmonics
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Supported Ansys versions:

2022 R2

Required Product:

Mechanical

Multiharmonics App is based on ACT and DPF. This App leverages DPF’s “fft_multi_harmonic_minmax” to improve the performance of the operations while also allowing a more accurate way of combining harmonic result than SRSS, where phase information is lost.

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Ansys is not responsible for providing maintenance or support for this app.
The app is provided 'as is,' and its use is subject to the user's sole responsibility and discretion.

App Description

Multiharmonics App is based on ACT and DPF (Data Processing Framework). This App leverages DPF’s “fft_multi_harmonic_minmax” to improve the performance of the operations while also allowing a more accurate way of combining harmonic result than SRSS, where phase information is lost. Based on the previous experience and the potential usage on other applications, the ANSYS team decided to create a general use extension that uses this same approach to expose multiharmonic analysis based on the multi-step harmonic capabilities in Mechanical and the DPF operator. This extension aims to promote and facilitate the usage of multiharmonic analysis for customers to improve their design process with more detailed periodic loading. Some of the potential applications for Multiharmonic App are:

Harmonic derived result computation (e.g., Von-Mises stress)
Periodic excitations (more than a single harmonic) as in aero or auto powertrain modeling
Turbomachinery forced response workflow
Gear modeling for powertrain applications
Linear periodic transient effects.