Strain Measurement in the Steel Shell Surface Impacted by a Falling Ball

Abstract:

In order to study the maximum strain of steel shell surface under the impact of a falling ball, a thin shell model and the strain time history curves of impact are achieved by ANSYS/LS-DYNA. A deformation behavior of the shell was calibrated from the test which uses a ball free fall and some resistance strain gauges pasted to the inner surface of an iron shell box. The gauges are connected as inputs to a Wheatstone bridge circuit and an Oscilloscope is used to observe the output. The results show the impact test and ANSYS/LS-DYNA simulation results are smoothly consistent with the strain of the test at the maximum strain amplitude of the model, and the maximum difference is 9.5%. Accurate results can be achieved by combining the test method and the simulation approach as an industrial application.

• Periodical: Applied Mechanics and Materials (Volumes 548-549)
• Pages: 401-405
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.548-549.401
• Online since: April 2014
• Authors: Wei Liu*, Jie Song, Hua Guan, Xiao Han, Jian Zhong Wu, Wen Ge Yang, Xiao Pan Li
• Keywords: Falling Ball, Impact Test, LS-DYNA, Shell, Strain Measurement, Transient Simulation

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