All software use MS Excel for various reasons. Data is easily entered into Excel and viewing the results is equally convenient. Most users are familiar with Excel, thereby minimizing the learning curve. Furthermore, by unlocking the sheets, users can customize their output options.

By combing the strengths of MS Excel with the power of VBA (Visual Basic for Applications), the result is an excellent engineering tool. Some software programs also call upon an opensource nonlinear FE (finite element) software package called CalculiX, which further enhances their capabilities.

Basic Features
Classical Laminate Analysis Yes
Classical Laminate Analysis - Single Page Compact Interface Yes
First Ply Failure Yes
Progressive Damage Failure *See Note
Section Analysis for Different Flange and Web Properties Yes
General Beam Analysis Future
Basic Column Analysis Yes
Short/Intermediate Column Analysis (Johnson-Euler) Yes
Carpet Plots Yes
Cutout Analysis Yes
Plate Vibration Future
Basic Sandwich Analysis Future
Analysis of Cylindrical Tubes Future
Multiple Load Case Capability Yes
English and SI Units Future

Bolted Joints
Basic Bearing-Bypass Analysis Yes
Fastener Load Distribution Analysis Yes
Eccentric Fastener Pattern Analysis Yes
Advanced Bearing-Bypass Analysis - General Loading Yes

Advanced Features
Plate Stability with Transverse Shear Deformation - Basic Yes
Plate Stability with Transverse Shear Deformation - Advanced Yes
Plate Stability with General Loading Yes
Plate Stability with General Supports Yes
Graphical Display of Buckled Mode Shape Yes
Pressure Analysis with Transverse Shear Deformation - Basic Yes
Pressure Analysis with Transverse Shear Deformation - Advanced Yes
Pressure Analysis with General Loading Yes
Pressure Analysis with General Supports Yes
Sandwich Analysis for All Failure Modes Future
Stability and Pressure Analysis for Curved Plates Yes
Radius Opening (Delamination) Analysis Future
User Defined Functions, Equations, and Integration of Modules Yes

*Progressive damage analysis, though commonly taught in academia, is not typically implemented for practical analysis of composites. It is therefore intentionally not included. See MIL-HDBK-17 or CMH-17 for further explanation. Our Practical Composite Analysis Book, when released, thoroughly covers composite failure criteria.