다양한 차량 헤드램프 진동 시험용 지그에서의 최적설계 적용 가능성 평가

다국어 초록 (Multilingual Abstract)

The vibration test jig design should address the conflicting goals of improving natural frequency and reducing weight. Recently, an optimal design methodology has been proposed to achieve these objectives. This study investigated its applicability to various headlamp models. Step-by-step optimization was conducted for four headlamp models, focusing on main ribs, reinforcing ribs, and holes. As a result, natural frequency improved in all models, with some achieving up to a 78.8 Hz increase and 16.6 kg weight reduction compared to the conventional design. The main and reinforcing ribs played a key role in enhancing natural frequency, with triangular rib structures identified as the most effective. Optimized hole design successfully contributed to weight reduction by eliminating unnecessary mass while maintaining the target frequency. To improve optimization efficiency, holes were designed with structures resembling rib shapes, reducing design variables. This study demonstrated the superior performance of the optimal design methodology over conventional empirical methods in achieving both natural frequency improvement and weight reduction. However, some limitations remain, including the lack of experimental validation and insufficient consideration of structural modes. Despite these limitations, this study establishes a foundation for applying optimal design beyond headlamp jig design, extending to other complex design challenges.