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Opciones del Producto nCode DesignLife
nCode DesignLife es la herramienta de análisis de fatiga con CAE de nueva generación que trabaja con todos los códigos FE de vanguardia y produce predicciones realísticos de vida en fatiga y zonas criticas en cuestión de fatiga. DesignLife comparte la arquitectura de nCode GlyphWorks - proporcionando una integración sin igual de datos CAE y de pruebas. DesignLife puede ser comprado en separado o junto con GlyphWorks.
Las funciones principales de DesignLife incluye:
Virtual Strain Gauge (Indicador virtual de deformación) – es una característica estándar de DesignLife que proporciona una única y poderosa manera de correlacionar pruebas con resultados de análisis de elementos finitos. Posicione y oriente gráficamente indicadores de deformación en su modelo FE como un paso de pos-procesamiento. Extraiga después historiales cronológicos debido a las cargas aplicadas para una correlación directa con los datos medidos de su indicador de deformación. Asesar una correlación nunca ha sido tan fácil!
Schedule Create (Creador de Programas) – Permite al usuario crear casos múltiples que modelan un ciclo de uso. Por medio de una interfaz intuitiva, Schedule Create hace fácil la tarea de crear un programa de durabilidad completo.
Signal Processing (Procesamiento de señales) – Incluye funcionalidad de GlyphWorks Fundamentals para manipulación básica, análisis y visualización de datos.
Materials Manager (Gestor de Materiales) – Habilita la edición, adición y graficado de datos de materiales. Esta provisto con una base de datos estándar de materiales frecuentemente usados.
Python Scripting – Esta capacidad única permite que scripts creados con Python sean usados para extender la capacidad de análisis en vez de tener que escribir código de análisis de fatiga desde cero. Es perfecto para métodos de propietario o proyectos de investigación.
Strain-Life (EN)
Applicable to a wide range of problems including low-cycle fatigue with the local elastic-plastic strain controls the fatigue life. Includes the ability to interpolate multiple material data curves for factors such as mean stress or temperature.
EN Solver Includes:
Material models
- Standard EN
- EN mean multi-curve
- EN R-ratio multi-curve
- EN temperature multi-curve
Mean stress corrections
- Morrow
- Smith Watson Topper
- Interpolate multiple curves
Plasticity corrections
- Neuber
- Hoffman-Seeger
- Seeger-Heuler
Multiaxial assessment
- Biaxial
- 3D Multiaxial
- Auto-correction
Stress-Life (SN)
Primary application 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. Python scripting is also available for defining custom fatigue methods.
SN Solver Includes:
Material models
- Standard SN
- SN Mean multi-curve
- SN R-ratio multi-curve
- SN Haigh multi-curve
- SN Temperature multi-curve
- Bastenaire SN
- Custom SN using Python scripting
Mean stress corrections
- FKM Guidelines
- Goodman
- Gerber
- Interpolate multiple curves
Stress gradient corrections
- FKM Guidelines
- User defined
Dang Van
Dang Van is a multi-axial fatigue limit criterion and is a method of predicting the endurance limit under complex loading situations. The output from the analysis is expressed as a safety factor and not a fatigue life.
More on Dang Van...
- Output from the analysis is always expressed as a safety factor not a fatigue life
- Specific material parameters are calculated from tensile and torsion tests
- Primary application for engine and powertrain-type applications where there are very large numbers of loading cycles of combined loading such as bending and torsion producing multi-axial stress states
Download available:
White Paper: Taking into Account the Forming Process in Fatigue Design Computations
Spot Weld
This option enables the fatigue analysis of spot welds in thin sheets. The approach is based on the LBF method (see SAE paper 950711) and is well-suited to vehicle structure applications.
More on Spot Weld...
- Spot welds are modelled by stiff beam elements (e.g. NASTRAN CBAR) as supported by many leading FE pre-processors.
- Also supported – CWELD, ACM formulations using solid elements.
- Cross sectional forces and moments are used to calculate structural stress around the edge of the weld spot.
- Life calculations are made around spot weld using linear damage summation and reporting worst case.
- Python scripting is also available for modelling other jointing methods such as rivets or bolts.
Seam Weld
This option enables the fatigue analysis of seam welded joints including fillet, overlap, and laser welded joints. The method is based on the approach developed by Volvo (see also SAE paper 982311) and validated through years of use on vehicle chassis and body development projects.
More on Seam Weld...
- Automated FE data processing makes job set-up quick and simple.
- Weld toe, root and throat failure
- Thickness correction
- Mean stress effects
- BS7608 welding standard is also supported together with require material curves.
Vibration Fatigue
Vibration Fatigue enables the simulation of vibration shaker tests driven by random (PSD) or swept-sine loading. It provides the capability to predict fatigue in the frequency domain and it is more realistic and efficient than time-domain analysis for many applications with random loading such a wind and wave loads.
More on Vibration Fatigue...
- FE models are solved for frequency response analysis and the vibration loading is defined in DesignLife.
- Include static offset case and complete duty cycles of combined loading.
- Perfect add-on product is Accelerated Testing to derive a tailored test profile from multiple loading spectra.
