Missile Concrete Impact (Coupled ALE - FEM Simulations)

Описание: 🚀 Numerical Simulations of Missile Impact on Reinforced Concrete. 🏛️

The missile is modelled with the Arbitrary Lagrange Eulerian (ALE) method which is suitable for the simulations of materials which undergo severe deformation. In this method, the materials 'flow' inside a background mesh or a volume which is similar to CFD analysis. However, with ALE, the volume can be either fixed in space or moving as shown in this example. Moreover, we have the option to allow the volume to rotate and expand/shrink. 🔍🔧

The concrete is modelled with Johnson-Holmquist Concrete material model whereas the missile is simulated with well-known Johnson-Cook material model. As for the reinforcement bars, which has a diameter of 5 mm, bilinear material model with strain rate parameters (Plastic Kinematics) is used. Due it is being modelled with beam elements, using a bilinear material model is fine and there is no need for a more complex material model. ⚠️📊

Furthermore, since the expected damage is local, the concrete was modelled in two separate parts: an impact zone having a fine mesh size, and non-impact zone with a moderate mesh size. Appropriate contacts algorithms were defined to connected between the two zones to ensure proper transfer of the forces and stresses. 💡

👉 Curious to learn how to model missile impacts? It will be on of the topics covered in the upcoming "Impact and Penetrations" workshop on 28 Oct - 1 Nov.

📅🕒 More details and to register, follow this link: [https://lnkd.in/gfcX6myv] #Simulation #ALE #ANSYS #fem #cfd #concrete #LSDYNA #Engineering #MaterialScience #defence #protective #fea #cae #defense #learningopportunity #structures