A PVW-based framework predicts viscoelastic crack delay times and crack evolution under arbitrary loads while introducing a path-independent J-integral that yields a generalized Griffith criterion for delayed fracture.
URL https://link.aps.org/ doi/10.1103/PhysRev.37.405
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The branching exponent α* ≈ 2.72 in biological vascular networks is a mathematical necessity due to the incommensurability of optimization constraints, established by no-go, gauge invariance, and architectural invariance theorems.
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Theory of fracture initiation and propagation in viscoelastic media
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