4.3. Sensitivity Analysis Methods

In general, structural performance measures are categorized as global and local measures. Global measures, such as volume or weight, vibration frequency, compliance, and buckling load, are measured for the entire structure. On the other hand, measures such as stresses or displacements are defined at specific points or small areas (e.g., average stress in a finite element). Design variables in general include shape and nonshape. Nonshape design variables do not alter the geometric shape of the structure, such as sizing and material. Design variables that alter the geometric shape of the structure include domain shape and configuration of frame structures. In addition, topology optimization considers element density ...

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