"OPRUGA V4.9 1.45" likely refers to a specialized mechanical engineering software tool used for the (the word "opruga" means "spring" in Serbian/Croatian/Bosnian). Version 4.9 (specifically 1.45) is a legacy iteration of such a program often used in academic and industrial settings in the Balkan region.
The "full text" generated by the software (often as a calculation report) includes: Dicap D sub i Decap D sub e L0cap L sub 0 (free length), and Stress Verification: Calculated shear stress ( OPRUGA V4.9 1.45
Numerical analysis of leaf spring stacks, often used in freight wagon design. 2. Key Input Parameters A full technical analysis using OPRUGA typically requires: Material Properties: Shear modulus ( ), tensile strength ( Rmcap R sub m ), and allowable shear stress ( τallowedtau sub a l l o w e d end-sub ). Common materials include spring steel (e.g., 51Si7). Load Requirements: Minimum ( F1cap F sub 1 ) and maximum ( F2cap F sub 2 ) operating forces. Dimensional Constraints: Maximum outer diameter ( Decap D sub e ) or minimum installation length ( L0cap L sub 0 3. Typical Output (Report Content) "OPRUGA V4