Structural Mechanics Structural Mechanics is an FEA beam and shaft stress analysis program that can analyze space frames. Program features include 3D solid modeling, rigid joints, pinned joints, U-joints, automatic node ... Cost: $100 Buy full version       Trial version       Publisher: Delphi Technical Software, LLC     Descriptions Structural Mechanics: Structural Mechanics is an FEA beam and shaft stress analysis program that can analyze space frames. Program features include 3D solid modeling, rigid joints, pinned joints, U-joints, automatic node assignments, cross section & material libraries, dtandard & custom cross section editors and powerful editing features.