1.13.2 The submerged sphere problem

Product: ABAQUS/Explicit  

Two test problems in particular have been used in the past to verify the underwater shock simulation capabilities of any code. Both of the problems are submerged shell structures excited by a planar shock wave with a step function profile (plane wave). The first, described in this example, is a spherical shell; the second, described in the following example, is an infinite cylindrical shell. The response of the submerged spherical shell has been analytically calculated by Huang (Huang and Mair, 1996). In this example the test problems are analyzed using both the total and scattered wave formulations, and the results calculated by ABAQUS/Explicit are compared to analytical results.

Problem description

Results and discussion

Input files

Reference

Figures

Figure 1.13.2–1 Quarter-sphere shell model.

Figure 1.13.2–2 Leading node velocity time histories.

Figure 1.13.2–3 Trailing node velocity time histories.