A theory was developed to investigate the effect of thermal-softening in rod impact test for the determination of the dynamic material properties of Polycarbonate, on the basis of one-dimensional shock wave propagation phenomena. High velocity rod impact test was performed with flat-ended cylindrical rod specimens. From the geometrical measurements of deformed rod, dynamic material properties were determined by both previous theories and the theory suggested in this work. The variation of temperature rise due to adiabatic plastic deformation with impact velocities and the effect of thermal-softening on the dynamic yield stress were analyzed.
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
Bever, M. B., Holt, D. L. and Titchener, A. L., 1973, “The Stored Energy of Cold Work,”Progress in Material Science, Vol. 17, Pergamon Press Ltd., Oxford.
Bitans, K. and Whitton, P. W., 1972, “High-Strain-Rate Investigations, with Particular Reference to Stress/Strain Characteristics,”Int. Metal. Rev., Vol. 17, pp. 66–78.
Chou, S. C., Robertson, K. D. and Rainey, J. H., 1973, “The Effect of Strain Rate and Heat Developed During Deformation on the Stress-Strain Curve of Plastics,”Exp. Mech., Vol. 13, pp. 422–432.
Date, H., 1982, “Elato-Plastic Wave Propagation in a Finite Bar with Consideration of Temperature Rise Caused by Plastic Work,”J. Soc. Mat. Sci. (Japan), Vol. 31, pp. 1073–1079.
Date, H., 1984, “Estimation of Yield Stress of Poly Vinyl Chloride at High Strain Rate Using Projectile Impact Technique,”J. Soc. Mat. Sci. (Japan), Vol. 33, pp. 1482–1487.
Date, H., 1990(a), “A Practical Form of Constitutive Equation Covering a Wide Range of Strain at High Strain Rate,”J. Soc. Mat. Sci. (Japan), Vol. 39, pp. 1657–1661.
Date, H., 1990(b), “Estimation of Poly(Vinyl Chloride) Specimen Temperature Under Impact Loading,”J. Soc. Mat. Sci. (Japan), Vol. 39, pp. 1266–1270.
Date, H., 1992, “Time Dependent Characteristics of Proposed Constitutive Equation Covering Wide Range of Strain at High Strain Rate,”J. Soc. Mat. Sci.(Japan), Vol. 41, pp. 23–27.
Dawson, P. C., Swallowe, G. M. and Xinwu, Z., 1991, “Temperature Rises During High Rate Deformation of Polymers,”J. De Physique IV, Colloque C3, Suppl. Au J. De Physique III, Vol. 1, pp. 701–706.
Gillis, P. P., Jones, S. E. and Foster, J. C., 1987(a), “On the Equation of Motion of the Undeformed Section of a Taylor Impact Specimen,”J. Appl. Phys., Vol. 51, pp. 499–502.
Gillis, P. P., Jones, S. E. and Dehn, H., 1987(b), “Some Further Results on the Taylor Impact Test,”Mech. Mat., Vol. 6, pp. 293–301.
Gillis, P. P. and Jones, S. E., 1989, “A Direct Correlation of Strength with Impact Velocity in the Taylor Test,”J. Eng. Mat. Tech., Vol. 111, pp. 327–330.
Gust, W. H., 1982, “High Impact Deformation of Metal Cylinders at Elevated Temperatures,”J. Appl. Phy., Vol. 53, pp. 3566–3575.
Hawkyard, J. B., 1969, “A Theory for the Mushrooming of Flat-Ended Projectiles Impinging on a Flat Rigid Anvil, Using Energy Considerations,”Int. J. Mech. Sci., Vol. 11, pp. 313–333.
Hayashi, T. and Yamamura, H., 1980, “On the Softening of Plastic Materials by the Temperature Rise Due to the Dynamic Deformation,”Trans. Japan Soc. Mech. Eng. Ser. A, Vol. 46, pp. 1096–1103.
Holzer, A. J., 1979, “A Tabular Summary of Some Experiments in Dynamic Plasticity,”J. Eng. Mat. Tech., Vol. 101, pp. 231–237.
Hutchings, I. M., 1979, “Estimation of Yield Stress in Polymers at High Strain-Rates Using G. I. Taylor’s Impact Techniques,”J. Mech. Phys. Solids, Vol. 26, pp. 289–301.
Hutchings, I. M. and O’Brien, T. J., 1981, “Normal Iimpact of Metal Projectiles Against a Rigid Target at Low Velocities,”Int. J. Mech. Sci., Vol. 23, pp. 255–261.
Johnson, G. R. and Cook, W. H., 1983, “A Constitutive Model and Data for Metals Subjected to Large Strains, High Strain Rates and High Temperatures,”Proc. 7th Int. Sym. on Ballistics, The Hague, The Netherlands, pp. 541–547.
Johnson, G. R. and Holmquist, T. J., 1988, “Evaluation of Cylinder-Impact Test Data for Constitutive Model Constants,”J. Appl. Phys., Vol. 64, pp. 3901–3910.
Kukureka, S. N. and Hutchings, I. M., 1981, “Measurement of the Mechanical Properties of Polymers at High Strain-rates by Taylor Impact,”Proc. 7th Int. Conf. on High Energy Rate Fabrication, pp. 29–38.
Lee, E. H. and Tupper, S. J., 1954, “Analysis of Plastic Deformation in a Steel Cylinder Striking a Rigid Target,”J. Appl. Mech., Vol. 21, pp. 63–70.
Min, O. K., Nam, C. H. and Lee, J. M., 1992, “Effect of Aspect-Ratio in Rod Impact Test for the Determination of Dynamic Material Properties of Polycarbonate at High-Strain-Rate,”Polymer(Korea), Vol. 16, pp. 375–382.
Min, O. K., Lee, J. M., Nam, C. H. and Hwang, J. J., 1993, “Rod Impact Test for the Determination of Dynamic Yield Stress of Metals,”Trans. Korean Soc. Mech. Eng. (Korean), Vol. 17, pp. 78–89.
Rietsch, F. and Bouette, B., 1990, “The Compression Yield Behaviour of Polycarbonate Over a Wide Range of Strain Rates and Temteratures,”Eur. Polym. J., Vol. 25, pp. 1071–1075.
Staker, M. R. et al., 1985, “High Strain Rate Testing,”in Metals Handbook Ninth Edition, American Society for Metals, Vol. 8.
Swallowe, G. M., Field, J. E. and Horn, L. A., 1986, “Measurement of Transient High Temperatures during the Deformation of Polymers,”J. Mat. Sci., Vol. 21, pp. 4089–4096.
Taylor, G. I., 1948, “The Use of Falt-Ended Projectiles for Determining Dynamic Yield Stress,”Proc. R. Soc., A 194, pp. 289–299.
Ward, I. M., 1983,Mechanical Properties of Solid Polymers, John Wiley & Sons.
Wilkins, M. L. and Guinan, M. W., 1973, “Impact of Cylinders on a Rigid Boundary,”J. Appl. Phys., Vol. 44, pp. 1200–1206.
Zerilli, F. J. and Armstrong, R. W., 1987, “Dislocation-Mechanics-Based Constitutive Relations for Material Dynamics Calculations,”J. Appl. Phys., Vol. 51, pp. 1816–1825.
About this article
Cite this article
Lee, J., Min, O. Effect of thermal-softening in rod impact test for the determination of dynamic material properties of polycarbonate. KSME Journal 9, 29–40 (1995). https://doi.org/10.1007/BF02954352
- Rod Impact Test
- Dynamic Material Properties