Optimization Analysis

Optimization analysis is a method for improving a tested subject under various predefined physical constraints, such as frequency, weight, strength, and thermal distribution. Modern optimization methods require an understanding of the subject, its constraints, and a general direction for the solution.

Optimization tools improve the design phases, shorten development processes, and enhance planning efficiency. It is one of the most effective multidisciplinary methods in engineering.

Types of Optimization

 

  1. Topology Optimization

Material distribution within a defined design space based on a well-defined set of constraints. The process finds optimal values for boundary conditions and system constraints within the design space.

  1. Topographical Optimization

An advanced form of shape optimization. This approach maximizes the stiffness of components without adding mass. It can also optimize modal frequencies depending on the goal. Topographical optimization applies only to parts defined by surface geometry.

  1. Shape Optimization

Used to refine an existing design by adjusting shape variables created using meshing technology.

  1. Size Optimization

Identifies optimal model parameters, such as material properties, cross-sectional dimensions, and thickness.

  1. Composite Material Optimization

A highly advanced method to find layer structures and interactions based on resins and a defined set of constraints. This combines three optimization processes – shape, size, and layer distribution.

Example of an Optimization Project

Lifting Arm for an Aerospace Mechanism:

  • Goal: Reduce the arm’s weight by at least 10% while maintaining a target frequency of 120 Hz.
  • Process:
    1. The arm was initially tested in its current state.
    2. Shape optimization was applied under three constraints: weight, strength, and frequency.
    3. After optimization, the general structure was obtained, requiring adjustments for manufacturability.

Results:

  • Weight was reduced by 15%.
  • Self-frequency improved by 40% while maintaining structural strength.
  • The optimized arm met design requirements and saved engineering time and resources.