plastic strain

The flow stress is a function of plastic strain.

The difference between Elastic and Plastic strain was also clearly explained.

In other situations, the yield stress model provides a direct means of computing the plastic strain rate.

In the analysis, fracture is assumed to have occurred when the equivalent plastic strain reaches a critical value.

Plastic strain occurs above the elastic limit but below the maximum stress the rock can withstand.

As a result, the residual plastic strain has much greater thermal stability than the more heavily cold worked microstructures.

Hollomon's equation is a power law relationship between the stress and the amount of plastic strain:

The material is elastic during unloading and no additional plastic strain is accumulated.

Also, precise strain measurements have shown that plastic strain begins at low stresses.

Such strain effects can result in unwanted cracking of the material, as is the case with residual plastic strain.

This resistance reaches an ultimate as the soil reaches failure and develops plastic strains.

Field of Expertise: Behaviour of polycrystalline metals at large plastic strains.

The transformation of a microdomain freezes the local plastic strain to its current value and contributes to the third order internal stresses.

The plastic strain value, , of an idealised elastic-plastic concrete is given by:

Some testing was done within a moiré interferometric set-up, designed to map the plastic strain field within the metal layers.

Each curve set depends on the plastic strain and plastic strain rate.

Two stress integration algorithms based on the implicit calculation of plastic strain are implemented and tested for the double-yield surface model.

One of the advantages to using shape memory alloys is the high level of recoverable plastic strain that can be induced.

In those situations the plastic strain rate is calculated in the same manner as in rate-independent plasticity.

(c) The plastic strain increment is proportional to the respective deviatoric stress:

These aspects include excess pore pressure, dynamic strength, dynamic shear modulus, and plastic strain.

(3) implies that the plastic strain increment:

For strain hardening rocks, the yield surface evolves with increasing plastic strain and the elastic limit changes.

On the other hand, for stress levels higher than , plastic strain becomes progressively larger than elastic strain.

If loading takes the stress state to the plastic domain then the increment of plastic strain is always greater than zero, i.e., .