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Predicting Performance Outcomes for Heterogeneous Materials Under Complex Loading

Francois Barthelat - Paul M. Rady Department of Mechanical Engineering

The objective of this project is to develop and validate models for the failure of materials and structures under extreme mechanical loads. Engineers can generally predict the failure of materials and structures subjected to relatively moderate loading conditions based on averaged properties. However, in the case of extreme loading conditions or impact, defects and heterogeneities make predictions more challenging, and failure might occur unexpectedly and away from the impact site.

This research project can help predict and prevent the collapse of mines, dams, bridges or buildings; predict earthquakes, which are triggered by mechanical failure along faults in the Earths crust; and even predict avalanches a serious danger in Colorado. An important application could be the prediction and prevention of ruptured aneurysm, which can also be interpreted as a mechanical failure of a blood vessel. In all these examples, these models can incorporate uncertainties in material properties, existing defects, accumulating damage and loading conditions for more accurate predictions and therefore more effective failure prevention.

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