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Problem Description

Robust Parameter Design selects designs insensitive to the variation of given parameters. 

This example demonstrates:

  • Robust Parameter Design

 

Problem description

This is the two-bar truss as considered previously. The problem has two variables: the thickness of the bars (x1) and the leg width (x2). The bar thicknesses are noise variables while the leg widths are adjusted (control variables) to minimize the effect of the variation of the bar thicknesses. A value of the base variable must be obtained that makes the stress response insensitive to variation of the area variable.

 

 

Design Formulation

The design formulation is as follows:

  • Minimize the weight of the structure subject to the probability of the maximum stress in the bars exceeding the failure stress.

 

Problem Solution