Skip to main content Accessibility help
×
Home

A correction method of elastic modulus in compression tests for linear hardening materials

  • Wei Liu (a1) (a2), Yong Huan (a1), Jie Dong (a1), Yujing Dai (a1) and Ding Lan (a2)...

Abstract

A correction method for linear hardening materials is brought forward to obtain the true (or nearly true) modulus of cylindrical specimens with middle aspect ratios in compression tests. By considering the stress concentration near the interface between the specimen and the compression platen caused by slanted contact, a “sandwich” model is developed. A correction formula is derived and all parameters can be obtained from the tested stress–strain curve. Experiments were performed on Al 2024 specimens with four aspect ratios. The corrected results are closer to the intrinsic modulus than the tested values, which verify the effectiveness of the correction method.

Copyright

Corresponding author

Address all correspondence to Yong Huan at huany@lnm.imech.ac.cn

References

Hide All
1. Chau, K.T.: Young's modulus interpreted from compression tests with end friction. J. Eng. Mech. 123, 1 (1997).
2. Jones, R.M.: Apparent flexural modulus and strength of multimodulus materials. J. Compos. Mater. 10, 342 (1976).
3. Sun, J.Y., Zhu, H.Q., Qin, S.H., Yang, D.L., and He, X.T.: A review on the research of mechanical problems with different moduli in tension and compression. J. Mech. Sci. Technol. 24, 1845 (2010).
4. Medri, G.: A nonlinear elastic model for isotropic materials with different behavior in tension and compression. J. Eng. Mater. Technol. — Trans. ASME 104, 26 (1982).
5. Backofen, W.A.: Deformation processing. Metall. Trans. 4, 2679 (1973).
6. Kuhn, H.: Uniaxial compression testing. In ASM Handbook Volume 08 Mechanical Testing & Evaluation, edited by Kuhn, H. and Medlin, D. (ASM International, Materials Park, OH, 2000), pp. 340.
7. Schroers, J. and Johnson, W.L.: Ductile bulk metallic glass. Phys. Rev. Lett. 93, 255506-1 (2004).
8. Liu, Y.H., Wang, G., Wang, R.J., Zhao, D.Q., Pan, M.X., and Wang, W.H.: Super plastic bulk metallic glasses at room temperature. Science 315, 1385 (2007).
9. Song, S.X., Beib, H., Wadsworthc, J., and Nieha, T.G.: Flow serration in a Zr-based bulk metallic glass in compression at low strain rates. Intermetallics 16, 813 (2008).
10. Williams, J.G. and Gamonpilas, C.: Using the simple compression test to determine Young's modulus, Poisson's ratio and the Coulomb friction coefficient. Int. J. Solids Struct. 45, 4448 (2008).
11.ASTM E9-09, Standard Test Methods of Compression Testing of Metallic Materials at Room Temperature, ASTM International, West Conshohocken, PA, 2009. http://www.astm.org

A correction method of elastic modulus in compression tests for linear hardening materials

  • Wei Liu (a1) (a2), Yong Huan (a1), Jie Dong (a1), Yujing Dai (a1) and Ding Lan (a2)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed