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2 STRUCTURES / nCode Design Code // / Core Functionality Virtual Strain Gauge and Virtual Sensor - Enables correlation between test and FEA results. Gauges (single or rosette) or displacement sensors may be graphically positioned and oriented on FEA models as a post-processing step. Time histories due to applied loads can be extracted for direct correlation with measured strain data and displacement data. Signal Processing - Enables basic data manipulation, analysis and visualization. Duty cycles can be defined by selecting f rom and building multiple cases. Composite duty cycle with repeats can be created. Crack Growth - Enables f racture mechanics analysis using industry standard methodologies for specified locations on the FEA model. Built-in growth laws include NASGRO, Forman, Paris, Walker and more. Select f rom a provided library of geometries or supply custom stress intensity factors. FEA Display - Enables the graphical display of FEA models with contours of stress results. Animates displacements f rom FEA results or generates an animation file to understand the deformed shape under loading. Custom Analysis - Enables Python or MATLAB scripts to be used to extend existing analysis capabilities — perfect for proprietary methods or research projects. Materials Manager - Enables material data to be added, edited and plotted. A standard database with fatigue properties for many commonly used materials is included. Vibration Manager - Enables vibration specification data to be entered, edited and viewed. A standard database with over 100 vibration entries is included. / Solver Engines – Standard Strain-Life (EN) - The Strain-Life method is applicable to a wide range of problems including low-cycle fatigue, where the local elastic-plastic strain controls the fatigue life. The standard EN method uses the Coffin-Manson-Basquin formula, defining the relationship between strain amplitude εª and the number of cycles to failure Nf. Material models can also be defined using general look-up curves. This enables you to interpolate multiple material data curves for factors such as mean stress or temperature. Stress-Life (SN) - The primary application of the Stress-Life (SN) method is high-cycle fatigue (long lives), where nominal stress controls the fatigue life. Includes the ability to interpolate multiple material data curves for factors such as mean stress or temperature. Further options are also provided to account for stress gradients and surface finishes. Python scripting is also available for defining custom fatigue methods and material models. / Solver Engines – Additional Strain Gauge Positioning - Calculates the optimum position and number of gauges required to enable the subsequent reconstruction of applied load histories. The Loads Reconstruction feature uses the virtual strains created by unit loads along with the measured strain histories f rom gauges matching the virtual gauges to reconstruct the force histories that caused the measured strains. Safety Factor Enables the calculation of a stress-based factor of safety. Widely used as a key design criterion for engine and powertrain components. Dang Van Multiaxial fatigue limit criterion used to predict the endurance limit under complex loading situations. Produces a safety factor as output. Utilizes material parameters calculated f rom tensile and torsion tests, and can account for manufacturing effects by using equivalent plastic strain in the unloaded component.

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