Structural Analysis Using Non-Linear Material Properties (FEA)
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The document discusses the benefits and features of using cloud-based simulation for structural analysis, particularly focusing on non-linear material properties in finite element analysis (FEA). It highlights a live demonstration of a combustion chamber's thermal and mechanical stresses, provided by Explotechnik AG, showcasing various materials' stress-strain behaviors and the use of simulation insights for better design decisions. Additionally, it emphasizes SimScale's capabilities in offering real-time support and collaboration solutions for users to accelerate their design processes.
![Material Properties
Model split for visibility
Material Brass S355 Steel
Stress-Strain
behavior
Linear elastic Plastic-
Temperature
dependent
Poisson’s ratio 0.375 0.3
Thermal expansion
coefficient
1.99e-5 1.2e-5
Density [kg/m3] 8530 7870
Conductivity
[W/(m.K)]
120 60
Specific heat
[J/(kg.K)]
375 480
Brass
S355 Steel](https://image.slidesharecdn.com/slidesharestructuralanalysisusingnon-linearmaterialspropertiesfea-190829111710/85/Structural-Analysis-Using-Non-Linear-Material-Properties-FEA-18-320.jpg)
Structural Analysis Using Non-Linear Material Properties (FEA)
- 1. STRUCTURAL ANALYSIS—ONLINE FEA NON-LINEAR MATERIAL PROPERTIES DAVID SHORT in collaboration with Explotechnik AG
- 2. 1. Benefits of Using Simulation 2. Introduction to SimScale 3. Today’s Topic: Structure Analysis using Non-linear Material Properties 4. Live Demonstration 5. Results Summary 6. Q & A
- 6. ACCELERATE YOUR DESIGN PROCESS Easily test performance, optimize durability, or improve design efficiency with cloud-based simulation.
- 7. ALL-IN-ONE Structural mechanics, fluid dynamics, and thermodynamics. REAL-TIME SUPPORT Chat, phone, and email. Consultancy, webinars, and training. COLLABORATION Join the community, benefit from public projects, and share knowledge. FAST & EASY Get results faster on any device thanks to cloud technology. COST-EFFICIENT Start risk-free without an upfront investment. SECURE High security with government-approved Advanced Encryption Standard (AES).
- 9. FEA Capabilities ● Static Stress ● Transient Dynamics ● Harmonic Vibration ● Thermal Stress ● Eigenmodes ● Impact & Contact ● Linear & Nonlinear ● Parts & Assemblies ● Various Materials Nonlinear Stress Analysis of a Gantry Crane Assembly Contact Stress of a Consumer Snap Fit Mechanism Drop Test Simulation of a Drone Thermal Stress Analysis of Thermal Shock in a Valve
- 10. Static load in a double girder gantry crane. FINITE ELEMENT ANALYSIS – STRUCTURAL SIMULATION TYPES Cell phone crashing onto the floor. Airfoil’s warped displacement field of the 8th eigenmode. Static Dynamic Frequency
- 11. FINITE ELEMENT ANALYSIS – NONLINEARITIES Geometric Materials Physical Contacts Large Deformations Plastic Hyperelastic Creep Separating Contacting
- 13. Non-Linear Material Properties ● Plastic material definition ● Hyperelastic material definition ● Temperature dependant properties: ○ Density ○ Thermal conductivity ○ Specific Heat New Feature: Temperature dependant plastic stress-strain relations. Ability to input stress-strain curves for different temperatures.
- 14. Practical Application Explotechnik AG Combustion Chamber The setup and geometry for today’s example simulation has been kindly provided by Explotechnik AG. Explotechnik AG utilise a large range of SimScale’s FEA capabilities, including non-linear statics, dynamics, and thermomechanics. This specific application looks at the thermal and mechanical stresses undergone by a combustion chamber structure during operation. Experimental measurements are used as thermal and pressure loading inputs for simulation.
- 15. SETUP
- 16. How to get started! CAD IMPORT Upload your CAD model or import it from other cloud services into SimScale. SIMULATION SETUP All steps to define and run a simulation are done within SimScale. DESIGN DECISION Use the simulation insights to make better and faster design decisions.
- 17. Geometry Combustion chamber model provided by Explotechnik AG. Model split for visibilityFull model Brass S355 Steel
- 18. Material Properties Model split for visibility Material Brass S355 Steel Stress-Strain behavior Linear elastic Plastic- Temperature dependent Poisson’s ratio 0.375 0.3 Thermal expansion coefficient 1.99e-5 1.2e-5 Density [kg/m3] 8530 7870 Conductivity [W/(m.K)] 120 60 Specific heat [J/(kg.K)] 375 480 Brass S355 Steel
- 19. Material Properties: S355 Steel Stress-Strain behaviour The steel exhibits different mechanical behavior as temperature changes. A complete description of the behavior can be given as material definition on the SimScale platform. Yield Point Additional data point e.g. UTS
- 20. Material Properties: S355 Steel Stress-Strain behaviour
- 21. Loading of Chamber During Operation Thermal Shock Max Temp = 1730°C
- 22. Loading of Chamber During Operation Pressure Max Internal Pressure = 64.2 Bar
- 24. Results Average Temperature on Load Application Surfaces
- 26. Stress concentration on exposed edges Results Von Mises Stress
- 27. ● Minimum principal stress = Maximum compressive stress ● Finite elements on the application surface are under compression Results Von Mises Stress