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

Area of Science:

• Opto-mechanical engineering
• Mechanical vibration analysis
• Laser systems engineering

Background:

• Semiconductor laser diode array beam combining systems face reliability challenges under vibration.
• Vibration can degrade performance and reduce operational lifespan.
• Existing anti-vibration designs may not offer optimal multi-objective performance.

Purpose of the Study:

• To develop an integrated optimization approach for enhancing the vibration resistance of laser diode array systems.
• To improve operational reliability under vibration conditions.
• To achieve balanced multi-objective optimization for anti-vibration structures.

Main Methods:

• Integrated optimization combining central composite design (CCD) and multi-objective particle swarm optimization (PSO).
• Establishing a response surface model correlating housing stiffener parameters with vibration response indicators.
• Applying multi-objective PSO for Pareto front optimization to balance design objectives.

Main Results:

• Significantly increased first-order natural frequency from 356.3 Hz to 1036.1 Hz.
• Reduced maximum deformation under random vibration from 0.2618 mm to 0.055 mm.
• Achieved a minimal mass increase of 165.47 g, with only minor decreases in laser power (3.3%) and peak irradiance (5.3%).

Conclusions:

• The integrated CCD-PSO methodology effectively optimizes anti-vibration structures for precision opto-mechanical systems.
• The optimized design demonstrates substantial improvements in vibration resistance and operational reliability.
• The approach is effective and engineerable for demanding mechanical environments.