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1. The Ultimate load-carrying capacity of a thin-walled shuttle cylinder structure with cracks under eccentric compressive force | |||
CAO Caiqin,LIU Kan,DONG Junzhe | |||
Mechanics 13 July 2016 | |||
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Abstract:The eccentric compression thin-walled shuttle cylinders structure is introduced, and elastic eigenvalue buckling of this kind of column with circumferential cracks is numerically simulated by the finite element method (FEM). Besides, based on the numerical results, ultimate load-carrying capacity analysis of eccentric compression thin-walled shuttle cylinders structure with cracks was studied in which geometric nonlinearity is included. The influences of some parameters, including the crack length, eccentricity, slenderness ratio and tapering ratio of thin-walled shuttle cylinders structure, have been taken into consideration. The results show that the ultimate load carrying capacity and the stability behavior can be improved by increasing the tapering ratio or decreasing slenderness ratio, eccentricity and crack length. And they also show that the eccentricity has a relationship with the influence of the crack length on stability behavior, that is, the ultimate load-carrying capacity is improved by decreasing the crack length only when the eccentricity is less than a certain value. Otherwise, when an eccentricity is larger than a certain value the crack length will have no effect on the ultimate load -carrying capacity of structure. | |||
TO cite this article:CAO Caiqin,LIU Kan,DONG Junzhe. The Ultimate load-carrying capacity of a thin-walled shuttle cylinder structure with cracks under eccentric compressive force[OL].[13 July 2016] http://en.paper.edu.cn/en_releasepaper/content/4699851 |
2. Debond propagation in sandwich structure under uniaxial in-plane compression | |||
Chen Jinlong,Gong Wenran,Qin Yuwen | |||
Mechanics 16 January 2009 | |||
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Abstract:Sandwich structures are made of thin and stiff face sheets and weaker core. The upper and lower face sheets are bonded to the core by glue. In practice, there are always face/core debonds exists in sandwich structure, these debonds are usually induced during manufacturing or by hard object impact during service. The purpose of this paper is to predict the mechanical behavior and the propagation of the debond of a compression loaded panel containing a face/core debond. During the research, we used the FEA software to simulate the mechanical behavior and the propagation of the debond of the compression loaded panel. This research concentrates on the simulation of panel with circular debond, we simulate the glue with three sets of spring elements. Compared with the experimental results and those computed by energy release rate, we proved the reasonability of the results. We also discussed the choosing of debond propagation criterion and found that the criterion we used in this paper operates easily and has higher precision. | |||
TO cite this article:Chen Jinlong,Gong Wenran,Qin Yuwen. Debond propagation in sandwich structure under uniaxial in-plane compression[OL].[16 January 2009] http://en.paper.edu.cn/en_releasepaper/content/27997 |
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