Progressive Collapse Mechanics of Reticulated Dome under Impact

Abstract:

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FE models of both the single-layer Kiewitt reticulated domes and the impactor were developed incorporating ANSYS/LS-DYNA. Three failure modes for Kiewitt reticulated dome under impact load are discerned. Moreover, Global collapse of structure belongs to the progressive collapse, and is the most serious failure. After this, stress of members, velocity and strain energy of each component are introduced to display the progressive process of collapse. It shows that the dome does not defend impact load as a whole. Each component of structure is impacted and dented in turn. And the collapse enlarges from impact zone to the supports of dome. Furthermore, collapse relates to energy transform among kinetic energy, stain energy and potential energy of structure. Moreover, collapse will continue, if initial kinetic energy and release of potential energy of structure exceed the strain needed.

Info:

Periodical:

Advanced Materials Research (Volumes 255-260)

Edited by:

Jingying Zhao

Pages:

1760-1764

DOI:

10.4028/www.scientific.net/AMR.255-260.1760

Citation:

D. Z. Wang et al., "Progressive Collapse Mechanics of Reticulated Dome under Impact", Advanced Materials Research, Vols. 255-260, pp. 1760-1764, 2011

Online since:

May 2011

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Price:

$35.00

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