Analyses on Mechanical Properties of the Cylindrical Double-V Micro-Structure University of Michigan - Ann Arbor

Format:

Conference/Event

Author/Creator:

Gao, Gao, author.

Contributor:

Ma, Zheng-Dong

Wang, Yuanlong

Zhong, Hong

Conference Name:

WCX World Congress Experience (2018-04-10 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2018

Summary:

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

Notes:

Vendor supplied data

Publisher Number:

2018-01-0118

Access Restriction:

Restricted for use by site license