Advances and Challenges in Numerical Modeling of Impact Welding Process
Fri, Nov 15 2019, 10 - 11:15am
In impact welding, extremely high plastic strain regions develop; traditional FE analysis methods are not able to accurately simulate the process due to excessive element distortion near the contact region. Despite the great successes in developing hybrid and adaptive re-meshing techniques, mesh-based numerical methods suffer from difficulties in some aspects which limit their applications in high-strain-rate problems. Recently, with the exponential growth in computer power, the next generation of computational methods, so called mesh-free methods, have received significant attention, such as smoothed particle hydrodynamics (SPH). In this talk, the results from impact welding simulations between different metals including AM-Steel/AM-Steel, Copper/Copper, and Aluminum/Steel will be presented. Also, the future outlook to investigate the effect(s) of diffused coating on weldability using SPH platform will be discussed.
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