Basic of Stress Strain Curve. For concrete the stress-strain curve is non-linear. Pin On It S A Jeep Thing This method is based on the actual stress-strain curves of steel and concrete. . Figure 9 True stress-strain curve of the specimens From this curve the true stress at maximum load can be obtained. This method is based on the elastic theory which assumes that concrete and steel are elastic and the stress strain curve is linear for both. Eventually the metal is strengthened by the deformation and the load increases with further. The image to the right shows the engineering stress vs. The stress and strain shown in this graph are called engineering stress and engineering strain respectfully. 29th Apr 2021. Soft steel when tested in tension frequently displays a peculiar characteristic known as a yield point. In experimental stress analysis the effect of the modulus of elasticity is typically ignored. The...