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2 months ago in Granular Physics By Mani

What constitutive laws or models are used to describe particle interactions in powder bed systems?

This question arises from granular mechanics and materials engineering. Powder beds behave differently from solids or fluids. I’m looking for foundational interaction laws.

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By Auwal Aliyu Jaji Answered 2 weeks ago

From my experience, powder bed interactions are typically modeled using contact mechanics rather than classical continuum laws. I have seen Hertz–Mindlin contact models combined with friction, cohesion, and damping used extensively, especially within discrete element methods. In practice, constitutive behavior emerges from calibrated micro-scale parameters. I would recommend focusing on DEM-based literature, as it best captures the non-linear and history-dependent nature of powder bed behavior.

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