Influence of Strengthening Material Behavior and Geometry Parameters on Mechanical Behavior of Biaxial Cruciform Specimen for Envelope Material.

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ID: 13721
2019
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Ranked #431 of 812 articles by views in Materials (Basel, Switzerland)

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Abstract
The stratospheric airship envelope material is operated in biaxial stress, so it is necessary to study the in-plane biaxial tensile strength. In this paper, a theoretical model is developed to evaluate the mechanical properties of in-plane biaxial specimens. Being applied to the finite element analysis, the theoretical model is employed to evaluate the influence of strengthening material behavior (E*) and geometry parameters on the mechanical behavior in the central. The follows results are drawn: (i) smaller the length of the central region (L), E* and larger the central region corner radius (r) contribute to smaller coefficient of variation (CV); (ii) smaller L and larger E* contribute to smaller stress concentration factor (k), k in the limit state of r is larger than that in other conditions. (iii) The CV and k under stress ratio of 1:1 are smaller than those under other stress ratios. The study can provide a useful reference for the design of biaxial specimens.
Reference Key
qu2019influencematerials Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Qu, Zhipeng;Xiao, Houdi;Lv, Mingyun;Wang, Xihe;Wang, Pengfei;Xu, Lei;
Journal Materials (Basel, Switzerland)
Year 2019
DOI
E2680
URL
Keywords Keywords not found

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