The Laminate Cutout Analysis Tool (LCAT) is a Smart Engineering Simulation App providing a means to compute the strain distribution around a circular, elliptical, or racetrack cutout in a composite plate subjected to biaxial and shear loading. Additionally, LCAT determines the margin of safety for strain and the orthotropic strain concentration factor.
Laminate Cutout Analysis Tool
From the simple and intuitive interface, LCAT automatically builds, solves, and post-processes a Planar StressCheck finite element mesh of the desired laminated cutout shape/orientation and provides solution verification feedback.
Key Features and Advantages
- Solutions obtained with StressCheck, verified by p-extension.
- Built-in Results Viewer provides dynamic viewing of the FE mesh, the strain fringe contours and the strain directions.
- Supports US and SI units.
- Modeling approach validated with experimental results.
- Automatic computation of the laminate properties using CLPT given the lamina material and stacking sequence.
- The strain distribution around a cutout in the laminate composite being prepared for a repair.
- Margin of Safety calculation for the unrepaired cutout before sizing the repair patch.
- A simple and intuitive user interface allows input engineering data in pre-defined templates with step by step validation feedback.
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“The addition of incremental theory of plasticity in StressCheck has greatly improved our ability to accurately predict the fatigue life of joints with interference fit fasteners and cold worked holes. This ability is especially important, not only in support of maintaining aging aircraft but also in analyzing some of the new cold working techniques that have been introduced in recent years.
Prior to this implementation, analysts often relied on closed-form approximations or simple factors that were often overly conservative and sometimes even unconservative when used in life prediction. Now, not only can we more accurately predict residual stresses in these complex structural joints, but we can also do so in a timely manner given the modeling and analysis efficiency that exists with a p-version FEA code such as StressCheck.”F-15 Structures Manager
The Boeing Company