EK554
Non-linear material effects in reinforced concrete are attributed to the stress-strain relationships for concrete and the reinforcing steel and also the bond breakdown between steel and concrete.
EK128
Initially the steel has a linear stress-strain curve whose slope is the Young’s modulus of elasticity.
EK70
For some materials such as concrete in a simple compression test, there is a region beyond the failure or peak point in which the slope of the stress-strain curve is […]
EK69
For most materials after the initial yield point has been reached,the stress-strain curve continues to rise although the slope becomes progressively less, until the slope falls to zero as failure […]
EK03
The superposition is not valid when the material stress-strain relationship is non-linear.