# Vibration Resistance Optimization of Housing Based on CCD and Multi-Objective PSO

## TL;DR

This paper presents a new method combining CCD and PSO to optimize housing structures for better vibration resistance in laser systems.

## Contribution

The novel contribution is an integrated CCD-PSO approach for multi-objective vibration resistance optimization in opto-mechanical systems.

## Key findings

- Optimized design increased first-order natural frequency from 356.3 Hz to 1036.1 Hz.
- Maximum deformation at critical positions reduced from 0.2618 mm to 0.055 mm.
- Laser output power decreased by only 3.3% under vibration, confirming improved reliability.

## Abstract

To improve the operational reliability of semiconductor laser diode array beam combining systems under vibration conditions, this study introduces an integrated optimization approach combining central composite design (CCD) with multi-objective particle swarm optimization (PSO). The methodology involves establishing a response surface model correlating housing stiffener parameters with vibration response indicators, subsequently applying multi-objective PSO for Pareto front optimization. This integrated strategy enables balanced multi-objective optimization of the anti-vibration structure. By modifying the original design into a vibration-resistant configuration, the approach delivers substantial performance enhancements: significantly increased first-order natural frequency, effectively suppressed maximum deformation under random vibration, and well-controlled mass addition. Comparative results demonstrate remarkable improvements over the initial design. The optimized parameter set elevates the first-order natural frequency from 356.3 Hz to 1036.1 Hz while reducing maximum deformation at critical positions from 0.2618 mm to 0.055 mm, with a minimal mass increase of merely 165.47 g. Vibration environment simulation verification demonstrates that after optimization, the output laser power decreases by only 3.3%, and the peak irradiance drops by 5.3%. These improvements substantially enhance system reliability under demanding mechanical conditions, confirming the effectiveness and engineering applicability of the CCD-PSO methodology for anti-vibration design in precision opto-mechanical systems.