Geometrical effect on the behavior of circular and elliptic tubes under dynamic axial loading
Date
2012-02-27Author
Fauziah, Mat
Rakhmad Arief, Siregar, Dr.
Khairul Azwan, Ismail, Dr.
Sazali, Yaacob, Prof. Dr.
Othman, Inayatullah, Capt (Rtd) Dr.
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A numerical investigation of circular and elliptic
tubes is performed under dynamic axial loading using non-
linear finite element code LS DYNA. The material of the
tubes is treated as piecewise linear elastic. The model
developed is validated with earlier numerical results. The
influence of geometrical parameters such as wall thickness,
semi apical angle and cross section on the load carrying
capacity of the structures is evaluated. The tubes are
varying with thicknesses between 0.5 to 0.9 mm and semi
apical angles between 0 to 10 degrees throughout their
height. The results showed distinctive performance
characteristics of straight and conical tubes of elliptic and
circular shapes. The findings of this study would assist the
future development of thin-walled tubes as energy
absorbing structures.
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