Variation of Elastic Energy Shows Reliable Signal of Upcoming Catastrophic Failure

  title={Variation of Elastic Energy Shows Reliable Signal of Upcoming Catastrophic Failure},
  author={Srutarshi Pradhan and Jonas T. Kjellstadli and Alex Hansen},
  journal={Frontiers in Physics},
We consider the Equal-Load-Sharing Fiber Bundle Model as a model for composite materials under stress and derive elastic energy and damage energy as a function of strain. With gradual increase of stress (or strain) the bundle approaches a catastrophic failure point where the elastic energy is always larger than the damage energy. We observe that elastic energy has a maximum that appears after the catastrophic failure point is passed, i.e., in the unstable phase of the system. However, the slope… 

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