Investigation of the Dynamic Buckling of Spherical Shell Structures Due to Subsea Collisions

  title={Investigation of the Dynamic Buckling of Spherical Shell Structures Due to Subsea Collisions},
  author={Ping-Ben Liu and Sakdirat Kaewunruen and Dao Chuan Zhou and Shanshui Wang},
  journal={Applied Sciences},
This paper is the first to present the dynamic buckling behavior of spherical shell structures colliding with an obstacle block under the sea. The effect of deep water has been considered as a uniform external pressure by simplifying the effect of fluid–structure interaction. The calibrated numerical simulations were carried out via the explicit finite element package LS-DYNA using different parameters, including thickness, elastic modulus, external pressure, added mass, and velocity. The… 
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Abstract : The report deals with a number of questions concerning the buckling of thin elastic spherical shell segments under uniform external pressure. Both experimental and analytical studies were