This note presents a simple approach to the direct determination of the confining pressure, q, for a cylindrical specimen encased in a metallic sleeve. The stress analysis of the problem shows that, for a pressure-insensitive material (e.g. metal), q is the quantity by which the stress level of the confined specimen is elevated with respect to the unconfined. As such, q is directly determined by comparing the results of two tests, one with and the second without confinement. For a pressure-sensitive material, q must be determined independently from a plastic stress analysis of the confining sleeve. Then, the same approach can be applied to determine the pressure sensitivity of the material. The present results greatly simplify testing of confined cylindrical specimens for both pressure-insensitive and sensitive materials.
This is a preview of subscription content, log in to check access.
Buy single article
Instant access to the full article PDF.
Price includes VAT for USA
Subscribe to journal
Immediate online access to all issues from 2019. Subscription will auto renew annually.
This is the net price. Taxes to be calculated in checkout.
Bardia P, Narasimhan R (2006) Characterisation of pressure-sensitive yielding in polymers. Strain 42:187–196.
Bridgman PW (1945) Flow and fracture. AIME Trans 162:569–583.
Chen W, Ravichandran G (1997) Dynamic compressive failure of glass ceramic under lateral confinement. J Mech Phys Solids 45(8):1303–1328.
Chen W, Ravichandran G (2000) Failure mode transition in ceramics under dynamic multiaxial compression. Int J Fract 101(1–2):141–159.
Hanina E, Rittel D, Rosenberg Z (2007) Pressure sensitivity of adiabatic shear banding in metals. Appl Phys Lett 90(2):021915.
Kachanov LM (1974) Foundations of the theory of plasticity. Mir, Moscow.
Lu J, Ravichandran G (2003) Pressure-dependent flow behavior of Zr41.2Ti13.8Cu12.5Ni10Be22.5 bulk metallic glass. J Mater Res 18(9):2039–2049.
Ma Z, Ravi-Chandar K (2000) Confined compression: a stable homogeneous deformation for constitutive characterization. Exp Mech 40(1):38–45.
About this article
Cite this article
Rittel, D., Hanina, E. & Ravichandran, G. A Note on the Direct Determination of the Confining Pressure of Cylindrical Specimens. Exp Mech 48, 375–377 (2008). https://doi.org/10.1007/s11340-007-9070-8
- Direct determination