The German Aerospace Center (DLR) selected MultiMechanics, a developer of advanced multi-scale simulation software for advanced materials, to predict cracks in the production of ceramic matrix composite (CMC) parts.
DLR's Institute of Structure and Design in Stuttgart, Germany has set up a simulation technology team to begin the simulation of an important intermediate step in the preparation of ceramic substrates-the high temperature cracking process of the precursor. In the process, CFRP is heated to a high temperature of 1600 degrees Celsius and then cooled. The research team tried to analyze the effect of temperature changes on the material microstructure and corresponding material behavior. The analysis results are crucial for the future production of ceramic matrix composite parts for DLR. Ceramic-based composite materials are mainly used in rocket nozzles, thermal protection systems and other components required to return to the Earth's atmosphere.
"The MultiMech software is able to simulate microcracks and their effects on integral components. With it, we can clearly see the direction of crack growth and know that How cracks will change the material and how it will affect the final material microstructure. "
With MultiMech software, engineers can change the strength of the interface between the fiber and the ceramic matrix and evaluate the effect of this parameter on crack initiation and propagation. With this knowledge, engineers can optimize and adjust materials based on microstructure mechanics, which is a key step to more accurately grasp the mechanical behavior and fracture behavior of the overall component.
Flavio Souza, President and Chief Technology Officer of MultiMechanics, said: "DLR is a global leader in advanced technology research in the aerospace industry and we are proud to provide technical support for the design and development of advanced ceramic matrix composite parts for DLR. Over the past decade, We have been working to accurately link the microstructure of advanced materials with the performance and manufacturing process of the entire component, so that users can see the benefits and value of multi-scale modeling. "
Neraj Jain said: "The combination of MultiMech software and existing finite element analysis software Abaqus and Ansys can improve production efficiency and bring us closer to the goal of optimizing ceramic matrix composites. The methods of crack simulation and multi-scale modeling enable We can better seize the opportunity in many future projects. "