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Analyses on Mechanical Properties of the Cylindrical Double-V Micro-Structure
Technical Paper
2018-01-0118
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The double-V micro-structures (DVMS) are a type of auxetic materials showing the negative Poisson’s ratio which can contract under compression different from the conventional materials. Due to the unique properties, it can have higher stiffness and better impact resistance with lightweight. In this paper, a cylindrical honeycomb tube based on the double-V unit cell is proposed. Firstly, the nominal Poisson’s ration and Young’s modulus in the longitudinal and circumferential directions are derived analytically. The effect of the geometry parameters of the DVMS tube on the mechanical properties is studied thoroughly. Also, the effect of the width in the radial direction on these mechanical properties is analyzed. Secondly, the finite element (FE) method is utilized to obtain the numerical solutions and verify the accuracy of the analytical solutions. The results show that there is a good agreement between the results obtained by the two methods when the width is smaller enough. With the width in a radial direction increasing, the difference between two solutions begins to appear and grow. Therefore, an adjust function related to the inner and outer radius needs to be introduced to improve the accuracy of the analytical prediction.
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Citation
Gao, Q., wang, Y., Ma, Z., and Zhong, H., "Analyses on Mechanical Properties of the Cylindrical Double-V Micro-Structure," SAE Technical Paper 2018-01-0118, 2018, https://doi.org/10.4271/2018-01-0118.Data Sets - Support Documents
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