Theoretical and Numerical Study and Comparison of the Inertia Effects on the Collapse Behavior of Expanded metal tube Absorber with Single and Double Cell under Impact Loading

Document Type : Research Article

Authors

1 Mechanical Engineering department, Engineering Faculty, Lorestan University, Khorram-Abad, Iran

2 Mechanical Engineering department, Semnan University, Semnan, Iran

Abstract

The present study provides the theoretical and numerical comparison and study of the dynamic behavior of a four-rod and four-elastic-plastic joint model under the inertia effects in both single and double cell modes. The theoretical study was carried out by solving nonlinear equations in MATLAB with dynamic equations of motion. Numerical analysis was also carried out with ABAQUS. The objective of this study is to derive the equation of energy absorption in terms of the inertia parameter to the expanded metal tube structure under impact loading and also to study the dynamic behavior of effective parameters and collapse mechanism of the structure in both single and double cell modes. Finally, the analysis of the effect of double cell absorber was carried out for the values of effective parameters in dynamic response. The results show that the collapse of the absorber will be symmetric in two directions.

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References

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Amirkabir Journal of Mechanical Engineering
Volume 50, Issue 5
January and February 2019
Pages 999-1014

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