nCode DesignLife is an up-front design tool that identifies critical locations for performing fatigue analysis from leading FEA results data, including ANSYS. Workshop / Tutorial 1: Introduction to the ANSYS nCode DesignLife Interface Workshop / Tutorial 2: Constant amplitude Stress life fatigue analysis. Workshop .
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High temperature fatigue methods: Stresses from a complete finite element model are analyzed in a single analysis process.
This approach substantially reduced engineering costs and helped E-Z-GO get the new design into production faster. Short Fibre Composite module features: Python scripting is also available for defining custom fatigue methods and material models. Distributed Processing enables a DesignLife analysis running in batch mode to be distributed across multiple computers or nodes of a computer cluster.
Enables you to rapidly solve jobs by using the combined processors of many machines. DesignLife provides methods to intelligently identify weld lines in the FE model, thus simplifying the process of setting up a fatigue job. Want to learn more?
ANSYS nCode DesignLife: Fatigue Failure Analysis
Crack Growth Provides a complete fracture mechanics capability using industry standard methodologies for specified locations on an FE model.
The Thermo-Mechanical Fatigue TMF option provides solvers for high temperature fatigue and creep by using stress and temperature results from finite element simulations. Further options are also provided to account for stress gradients and surface finishes. Start-to-end automation avoids the majority of errors and ensures consistency, especially in large organizations in which multiple engineers might be analyzing the results.
The output from the analysis is expressed as a safety factor rather than fatigue designljfe. The Composite Analysis option allows users to evaluate the strength of a structure against industry standard composite failure criteria.
Applications include components that are both mechanically and thermally loaded such as vehicle exhaust systems and manifolds. Structural stress at the weld toe, the hot-spot stress can be estimated by the extrapolation of the surface stress at points near the weld Supports BS welding standard, together with required material curves Enables vibration designlfe data to be entered, edited, and viewed.
Commercial truck owners needing weight and fuel economy savings are considering the benefits of a single wide-base wheel. Rather than limiting this evaluation to a small number of load cases or steps, stresses can be assessed by using the chosen failure criteria throughout realistic duty cycles quasi-static or dynamic. Includes new optimised and spot weld methods. The method is based on the approach developed by Volvo see also SAE paper and validated through years of use on vehicle chassis and body development projects.
Safety Factor enables the calculation of stress based factors of safety. Dang Van is a multi-axial fatigue limit criterion and is a method of predicting desugnlife endurance limit under complex loading situations. The following methods can be used individually or combined to give the most conservative result: Simulate vibration tests driven by random PSDswept sine, sine dwell or sine-on-random loading Predict damage and life per layer and integration point Incorporate results of manufacturing simulation including fibre orientation tensors or residual stresses Model local fatigue properties based on microstructure orientation tensor and stress state Calculate fatigue based on principal stresses or critical plane — including stresses calculated from FE-Digimat and multiaxial stress states Choice of fatigue property model – SN deeignlife interpolation or interface to Digimat Use of homogenized matrix or fibre stresses as well as typical composite ones.
Inputs are linear stress or strain for this SN based technique. Find training Request quote Contact us. Although this is primarily a CAE based analysis, the same method may also be applied to measured stress data. Vibration Manager Enables vibration specification data to be entered, edited, and viewed. The Seam Weld option enables the fatigue analysis of seam welded joints including fillet, overlap, and laser welded joints.
The Adhesive Bonds option enables durability calculations asnys adhesive joints in metallic structures. Simulate complex loading scenarios using any time domain method static or modal superposition, duty cycles, etc.
The primary application of the Stress-Life SN method is high-cycle fatigue long lives where nominal stress controls the fatigue life. The Strain-Life method is applicable to a wide range of problems including low-cycle fatigue with the local elastic-plastic strain controls the fatigue life. See how our customers are using our software: Approximate calculations of the strain energy release rate are made at the edge of the adhesive and, by comparison to the crack growth threshold, a safety factor is calculated.
Time histories due to applied loads can be extracted for direct correlation with your measured strain tutodials displacement data.
Mechanical loads that vary at a different rate to the temperature variations can also be combined. This enables the ability to interpolate multiple material data curves for factors such as mean stress or temperature. Select from a pre-populated library of geometries or supply custom stress intensity factors.
Fatigue Analysis using FEA Results Design for Durability Attendees looking to learn more about the background of fatigue theory are desigjlife to attend our 2-day course called Practical Fatigue Theory. The Short Fibre Composite option uses stress-life fatigue calculations for anisotropic materials such as glass fibre filled thermoplastics.
Material models can also be defined using general look-up curves.
nCode DesignLife – CAE Fatigue Analysis Software – nCode
The Strain Gauge Positioning option calculates the optimum position and number of gauges required to enable the subsequent reconstruction of applied load histories. Material inputs are standard mean stress corrections or user-specified Haigh diagrams to assess durability. Download the latest version.
The theoretical basis of the method was developed by the Volvo Group and the testing and software implementation was carried out as part of a collaborative research project with partners including Jaguar Land Rover, Coventry University and Warwick University.
Duty cycles can be defined by selecting from and building multiple cases.
Uses specific material parameters calculated from tensile and torsion tests. This feature designlief it easy to create a composite duty cycle with repeats. They then ran the thermal-stress analysis again with the new design, exported the stresses to nCode DesignLife, and combined the results with a material model and a description of the repetitive loading that the product is expected to undergo during operation. In addition, selected location loading paths may be visually compared with the material failure envelope.
ANSYS nCode DesignLife
A standard database with fatigue properties for many commonly used materials is included. This method is widely used as a key design criteria for engine and powertrain components like crankshafts, camshafts and pistons.
The stress tensor for each layer and section integration point through the thickness is read by DesignLife from FE results. Stress wnsys corrections FKM Guidelines User defined Critical distance Enables vibration specification data to be entered, edited, and viewed.
Since the fatigue calculation tutorrials each model location is effectively independent, the benefit to adding additional processing threads is very scalable.