Abstract
The uniaxial tension test is a convenient method for the determination of mechanical properties of a material. A typical curve in the system nominal stress-Cauchy strain is presented in Fig. 5.1, in which the following characteristic points are indicated: 1: proportional limit σ p ; 2: elastic limit σ H ; 3: yield point σ o ; 3–4: platform of ideal plasticity; 4–5: plastic hardening; 5: necking point; 6: rupture point. The character of stress-strain curves for various materials is different. For materials for which one does not observe a well-marked yield point, for example alloy steel, one introduces the notion of yield strength corresponding to some fixed elongation, for instance 0.2% (σ o 2). Many materials do not give evidence of existence of a linear segment (annealed aluminium for example).
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© 1992 Springer-Verlag London Limited
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Służalec, A. (1992). Stress-Strain Curve. In: Introduction to Nonlinear Thermomechanics. Springer, London. https://doi.org/10.1007/978-1-4471-1906-7_5
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DOI: https://doi.org/10.1007/978-1-4471-1906-7_5
Publisher Name: Springer, London
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Online ISBN: 978-1-4471-1906-7
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