CSiSections vs Structer

CSiSections is an app that conveniently computes the structural properties of cross-sections of more than 25 shapes. CSiSections is an essential tool for engineers who quickly need the properties of commonly used sections and also for students who want to learn about the calculation procedures for structural properties of various sections. Application / Usage: • Define geometry of parametric cross-sections • Conveniently computes structural properties of simple and complex structural cross-sections Target Users: • Engineers who need structural properties of commonly used sections quickly • Students and teachers who want to know the structural properties of various cross-sections and calculation procedures Key Features: • More than 25 parametric sections, 6 shape categories to choose from • Responsive graphics • Detailed calculation reports Key Input: • Section type, dimensions Key Output: • Basic properties: Area, inertia, radius of gyration, section modulus • Advanced properties: Shear area, torsional constant • Principal properties: Principal angle, principal moment of inertia

Structer is a structural analysis toolbox for students and practicing engineers in aerospace structures. It provides clear calculations and visualizations for common problems in aircraft structural analysis and sizing. StruCalc is intended for educational use, preliminary analysis, and engineering sanity checks. **Included Tools:** • Section Properties & Stress –Area, centroid, moments of inertia, section modulus, and stress analysis for common sections • Beam Internal Loads – Support reactions, shear and bending diagrams for simple beams and combined loading • Mohr’s Circle (2D Stress) – Principal stresses, maximum shear stress, and orientation • Elastic Column Buckling (Euler) – Preliminary buckling screening for slender compression members with effective length factors • Stress Due to Axial and Bending Loads – Compute section stress based on user-defined area, moment of inertias and location. **Methods and Validation:** Calculations use standard closed-form analytical formulas, cross-checked against independent hand calculations and standard engineering references, including: – Megson T.H.G — Aircraft Structures for Engineering Students – Young, W.C. & Budynas, R. G. — Roark's Formulas for Stress and Strain – Bruhn, E.F. — Analysis and Design of Flight Vehicle Structures – Niu, Michael C. Y. - Airframe Stress Analysis and Sizing