OS-E: 2035 Stress and Strain Responses Based on the Neuber Correction Method
The objective is to reduce the stress concentration at the fillet regions of the model
by changing its shape.
Define the shape modifications and the nodal movements to reflect the shape changes. The
valve is modeled using first order Tetra elements. Figure 1. FE Model with Loadcases and Loadstep
Minimize the static stress to a value less than 330 using Neuber correction
response
Design Variables
Shape Design Variables
This example has a half symmetric valve, which is modeled using first order tetra elements
and has a force applied on it at a specific location. A shape ID is created using HyperMorph and the Shape design variables is created. A static stress
response is created with Neuber correction and a mass response defined by an equation to
minimize the change in the mass. A design constrain is defined for static-stress response.
Results
Figure 2. Maximum Average Neuber Stress Figure 3. Shape Change in the Model after Optimization
