基于行人小腿保护的保险杠结构稳健性优化设计

为了增强保险杠结构的小腿保护功能，提出了将试验设计技术、径向基函数近似建模技术、全局优化算法和基于蒙特卡罗模拟技术的6σ质量设计相结合的稳健性优化设计方法，并应用该方法进行了保险杠结构的优化设计。优化结果表明，该方法大大提高了车辆的行人保护功能。由于在优化过程中考虑了设计变量的不确定影响，该方法比确定性的优化方法更具有可靠稳健性。因此，从一定程度上讲，该方法是一种求解复杂工程问题的稳健性优化设计方法，深入应用该方法能大幅提高产品的设计质量。

Robustness Optimization Design of Bumper Structure Based on Protection of Pedestrian Lower Leg

In order to improve lower leg protection of bumper structure, this paper presented a systematic method combining experimental design, radial basis function approximation modeling technology, the global optimization algorithm and 6-Sigma quality design based on Monte Carlo simulation, which was applied to optimize the bumper structure. Due to taking the uncertainty of design variables into consideration, the optimization results are more reliable and robust than that of the deterministic optimization method. Therefore, to some extent, this paper proposed a robustness optimization design method for solving complex engineering problems, and further application of this method can improve the design quality of products greatly.