Would you like to realize these objectives?
- Analytically predict the anisotropic fracture material behavior of composites.
- Evaluate the impact properties of large structures made of composite materials.
- Choose the optimal design using composite materials
Analysis Approach for FRP Laminates
The material behavior of FRP ( Fiber Reinforced Plastics) laminates can be flexibly controlled by adjusting the type of material and the orientation angle of the fibers in the layers. Using a multi scale analysis approach, a wide range of problems can be addressed analytically, from understanding the material behavior of each layer to predicting the specific product level of the FRP laminate
Example of Impact Fracture Analysis of Laminated FRP
The following example shows the analytical prediction of impact failure behavior of FRP laminates. 8 layers of FRP was used . Each containing fiber aligned in a certain direction. The results were compared for three different combinations of fiber orientation angles, showing that the stress distribution and fracture behavior significantly varied with the lamination configuration.
Prediction of Material Behavior and Identification of Material Properties of Composite Materials by Virtual Material Testing
- Virtual material testing technology can be used to predict the material properties needed for fracture analysis
- Support for highly accurate and general inelastic problems.
Multiscale.Sim supports not only implicit but also explicit analysis. With this function, it is possible to observe material behavior in any deformation mode and fracture behavior inside the material structure during testing, while taking into account fracture behavior such as material interface de bonding, delamination and transverse cracks that occur inside FRP.
Prediction of Anisotropic Property Values of Laminated Materials Using Lamination Theory
Using the laminate theory provided by Ansys Composite PrepPost TM, it is possible to predict and observe the equivalent anisotropic elastic behavior of FRP laminates based on the combination of fiber orientations. In the case of structures with complex curved surfaces, the orientation of the fibers changes before and after molding. By using the drape analysis function provided by the tool, equivalent material properties that take into account changes in orientation due to molding can be evaluated and applied to actual FEM analysis. Since the evaluation of equivalent material constants is done in a very short time, it is easy to perform case studies with various stacking patterns.
Advantages of This Solution
- Deformation modes that are difficult to implement in actual tests can be easily realized.
- Fracture behavior inside the material during the test can be observed. It’s difficult to observe this in an actual test.
- It can visually and quantitatively evaluate the difference in material behavior when the lamination pattern is changed.
- Impact fracture analysis of large structures can be performed considering the stacking pattern.
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