Delayed buckling of spherical shells due to viscoelastic knockdown of the critical load

  title={Delayed buckling of spherical shells due to viscoelastic knockdown of the critical load},
  author={Lucia Stein-Montalvo and Douglas P. Holmes and G. Coupier},
  journal={Proceedings of the Royal Society A},
We performed dynamic pressure buckling experiments on defect-seeded spherical shells made of a common silicone elastomer. Unlike in quasi-static experiments, shells buckled at ostensibly subcritical pressures, i.e. below the experimentally determined critical load at which buckling occurs elastically, often following a significant delay period from the time of load application. While emphasizing the close connections to elastic shell buckling, we rely on viscoelasticity to explain our… 

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