How are the muscles forces calculated when using AnyMechOutputFileForceExport

Hello everyone,

I'm currently struggling to grasp how the muscle forces are computed and recorded in the XML file after employing the AnyMechOutputFileForceExport function.

Could the process when utilizing this feature in AnyBody be explained to me?

Thank you in advance for your assistance.


Hi Mariam,

You can always check our Ref. Manual, it normally contains all the information and some class examples. Secondly, one can always search forum for the relevant keyword.

But the AnyMechOutputFileForceExport class uses two object arrays for the segments of interest and corresponding ref. frames that are used to output muscle and other forces:

Kind regards,

Hi Pavel,

Thank you for your response.

I checked the manual, but it either does not provide the answer I need or I did not understand it fully.

Could you please explain the calculations used in AnyBody to convert muscle forces (which I understand are represented as Fm in the model) into the forces decomposed into the three spatial directions in the XML file?

I am encountering unit issues when implementing the muscle forces in my FE model, so understanding this process would be very helpful for me.

Kind regards,