A Particle Beam Simulation

by Mark A. Hopkins, Dartmouth Coll, Hanover, United States,

Document Type: Proceeding Paper

Part of: Mechanics Computing in 1990's and Beyond


A two-dimensional beam simulation is developed in which the beam is composed of uniform rectangular blocks. Internal forces in the beam are caused by relative motion between adjoining blocks. A viscous-elastic-plastic force model is used. Tensile or compressive failure of the beam occurs when stresses in the top or bottom surfaces exceed the strength of the material. The simulation is numerically explicit and completely consistent with existing discrete particle simulations. For this reason, it is especially suited for modeling problems in which a beam undergoes periodic failure creating a rubble accumulation as blocks are broken from the parent beam. Two such problems are ice jamming in northern rivers and sea ice ridging in the Arctic.

Subject Headings: Numerical models | Particles | Beams | Ultimate strength | Material failures | Failure analysis | Structural failures | Structural analysis | Arctic

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