The Study on the Dynamic Response of Cylindrical Pressure Hull on the Different Shock Loading Empirical Formula

Abstract

This paper focuses on the comparison between underwater explosion (UNDEX) shock loading empirical formulations. First, the numerical simulations for a cylindrical pressure hull subjected to UNDEX loading were conducted and the results are close to the failure modes shown in experiments of Kwon (1993). Second, the empirical UNDEX loading formula of Cole (1948), Keil (1961) and Shin (1994) used in cylinder subjected to underwater shock loading were compared. The simulation results by using three empirical formulas were compared and Shin’s (or Cole’s) empirical formula was shown to be better than the other empirical formulations when subjected to an UNDEX under the same conditions. The analytical results offer a valuable reference to the research of underwater explosion.

Incremental Explosive Analysis and Its Application to Performance-Based Assessment of Stiffened and Unstiffened Cylindrical Shells Subjected to Underwater Explosion

“…The implosion of cylindrical shells subjected to dynamic lateral hydrostatic pressure has been investigated by Gish [5]. Hsu et al [6] made a comparison between various empirical formulas for application of shock-induced pressure on cylindrical shells with numerical models. Their reference for judgment on the accuracy of different formulations was the experimental results of [1].…”