I'm new to MATLAB I'm having trouble with these steps.

I have building a wing structure, i want to do some analysis on this structure by using Finite Element Analysis Apprach, so, i followed the steps shown on this link : https://www.mathworks.com/matlabcentral/fileexchange/47051-flexible-body-models-in-simscape-multibody (simscape multibody flex beam), please can any one help on:

–Export mass and stiffness matrices from FE software ( this step is done)

• Import data into Simscape Multibody ?
• Superimpose deflection onto rigid body motion ?
• Valid for small deflections ?

Thanks in advance