摘要
考虑设计变量和其他随机变量的变异性影响,提出了一种提高轨道车辆零部件稳健性的优化设计方法。通过极小化质量特性的平均损失实现目标函数的稳健性,通过质量控制系数构建约束函数,建立了轨道车辆零部件稳健性优化设计模型。以HXD2型机车轴箱弹簧静挠度稳健性优化设计为例,验证了该方法的有效性和合理性。分析表明:优化结果的稳健性优于原产品,且质量减轻9.83%。
A optimization design method improving the robustness of components for railway vehicle is developed,that includes the variability of design variables and other variables,and the robustness optimization design model of components for railway vehicle is set up,that realize the object function robustness by minimizing the average loss of quality characteristic,and constructs the constrain condition by the quality control coefficient.the validity and rationality of this model are verified using the robust optimization design of the axle box spring for locomotive HXD2.The results shows that the robustness of optimization scheme is better than that of original product,and the mass is cut by 9.83%.
出处
《内燃机车》
2011年第8期19-21,45,共4页
Diesel Locomotives
基金
甘肃省自然科学基金(2008-GS-02607)
甘肃省高等学校基本科研业务费资助项目(20994)
甘肃省高校导师基金(090406)
关键词
轨道车辆
稳健设计
结构优化
轴箱弹簧
静挠度
railway vehicle
robustness design
structural optimization
axle box spring
static flexibility
