Numerical Simulation and Experimental Study on Fluid-Filled Hemispherical Shell under Impact

Abstract:

The dynamic response of fluid-filled hemispherical shell in mass impact is studied by experiment using DHR9401. Combining the time history of impact force with experimental observation of the deformation process, it can be seen that the dynamic response can be divided into four stages: the flattening around the impact point, the forming and expanding outward of shell plastic hinge, the plastic edge region flatten by the punch, and elastic recovery. The experimental results show that: Because the shell filled with liquid, the local impact load that the shell suffered is translated into area load and loads on the inner shell uniformly, so that it has a high carrying capacity. Numerical simulation is used to study the time history of energy absorption of different shell structures. The result shows that the crashworthiness of sandwich fluid-filled shell is improved greatly. Under the certain impact energy, deformation of its inner shell is very small, which can provide effective security space.

• Periodical: Applied Mechanics and Materials (Volume 364)
• Pages: 172-176
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.364.172
• Online since: August 2013
• Authors: Hui Wei Yang, Bin Qin, Zhi Jun Han, Guo Yun Lu
• Keywords: Dynamic Response, Fluid-Filled Shell, Hemispherical Shell, Impact

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