AbsIncreEnergy

Absolute Energy Increment

In the governing equation,

$$\mathbf{K}\mathbf{\Delta }\mathbf{U}\mathbf{=}\mathbf{R},$$

this converger tests the magnitude of the product of displacement increment and residual, viz.,

$$\left|\mathbf{\Delta }\mathbf{U}\cdot \mathbf{R}\right|⩽tol.$$