Hyperelastic behavior of two rubber materials under quasistatic and dynamic compressive loadings — testing, modeling and application

Y. Mao; Y. Li; Y. Chen; Y. Miao; Q. Deng; W. Niu

doi:10.14314/polimery.2015.516

Published : 2015-08-30

Vol. 60 No. 7-8 (2015)

Hyperelastic behavior of two rubber materials under quasistatic and dynamic compressive loadings — testing, modeling and application

Y. Mao Y. Li Y. Chen Y. Miao Q. Deng W. Niu

DOI: https://doi.org/10.14314/polimery.2015.516

Abstract

The mechanical properties of two rubber materials, RB-55 rubber and FM-32 foam rubber, were tested under quasistatic and dynamic compressive loadings with a universal testing machine and a nonmetallic split Hopkinson pressure bar (SHPB), respectively. The results show that the hyperelasticity dominates the mechanical characteristics of the both materials. And the strain rate dependencies can be observed over the wide strain rate range from 10-2 s-1 to order 103 s-1. But in the rather narrow bands of 10-2—100 s-1 and 2 • 103 —6 • 103 s-1, the strain rate effects are not significant. In order to numerically simulate rod-explosive loading tests where the two rubber materials were used as a combined buffer, the strain rate-independent hyperelastic behaviors at the strain rate of order 103 s-1 were characterized by Ogden constitutive models, incompressible for RB-55 rubber and compressible for FM-32 foam rubber, respectively. The numerical prediction of the structural responses agrees very well with the experimental results. This means the testing and modeling are successful.

Keywords

rubber ; hyperelastic behavior ; compressive loading ; constitutive model guma ; właściwości hipersprężyste ; obciążenie ściskające ; model konstytutywny

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Mao, Y., Li, Y., Chen, Y., Miao, Y., Deng, Q., & Niu, W. (2015). Hyperelastic behavior of two rubber materials under quasistatic and dynamic compressive loadings — testing, modeling and application. Polimery, 60(7-8), 516–522. https://doi.org/10.14314/polimery.2015.516

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Y. Mao maoyj@caep.cn

Affiliation
China Academy of Engineering Physics, Institute of Systems Engineering, Mianyang 621900, Sichuan, China

Y. Li

Affiliation
Northwestern Polytechnical University, School of Aeronautics, Xi’an 710072, Shaanxi, China

Y. Chen

Affiliation
China Academy of Engineering Physics, Institute of Systems Engineering, Mianyang 621900, Sichuan, China

Y. Miao

Affiliation
Northwestern Polytechnical University, School of Aeronautics, Xi’an 710072, Shaanxi, China

Q. Deng

Affiliation
Northwestern Polytechnical University, School of Aeronautics, Xi’an 710072, Shaanxi, China

W. Niu

Affiliation
China Academy of Engineering Physics, Institute of Systems Engineering, Mianyang 621900, Sichuan, China