基于Kriging近似模型的GCHE曲轴稳健性设计
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摘要
缸间齿轮联动液压发动机是一种综合性能较好的新型液压发动机。曲轴位于发动机一侧,曲轴外形为半拐结构,其具有与传统发动机不同的受力情况与工作状况,因此需要对其进行结构优化设计,以实现最佳的工作状态。针对GCHE曲轴结构优化数学模型,基于Kriging近似模型与最优拉丁超立方试验设计方法,创建面向6σ稳健性优化设计的曲轴结构尺寸优化模型。仿真结果表明,该方法可完成对目标性能的最优寻值,并提高约束条件的可靠性和目标函数的稳健性。通过对比确定性优化,稳健设计可使曲轴体积降低1.61%,质量水平达到99.999%。
Gear-linked cylinders hydraulic engine( GCHE) is a kind of hydraulic engine with better comprehensive performance. Its crankshaft is located at one side of the body and its structure is half crank structure. Its loads and working conditions are different from conventional engine. To achieve the best working condition,it is necessary to optimize its structure design. Based on Kriging approximation model and design method of the optimal Latin hypercube,the optimization model of crankshaft structure size for 6σ robust design is created for the optim-ization model of GCHE crankshaft structure. The simulation result shows that this method can be used to achieve the optimal searching for the target and improve the reliability of the constraint condition and the robustness of the objective function. Compared with the deterministic optimization,the robust design not only reduces the volume of the crank-shaft by1.61%,but also achieves the quality level of 99.999%.
Gear-linked cylinders hydraulic engine( GCHE) is a kind of hydraulic engine with better comprehensive performance. Its crankshaft is located at one side of the body and its structure is half crank structure. Its loads and working conditions are different from conventional engine. To achieve the best working condition,it is necessary to optimize its structure design. Based on Kriging approximation model and design method of the optimal Latin hypercube,the optimization model of crankshaft structure size for 6σ robust design is created for the optim-ization model of GCHE crankshaft structure. The simulation result shows that this method can be used to achieve the optimal searching for the target and improve the reliability of the constraint condition and the robustness of the objective function. Compared with the deterministic optimization,the robust design not only reduces the volume of the crank-shaft by1.61%,but also achieves the quality level of 99.999%.
引文
[1]高雷.缸间齿轮联动液压发动机曲柄连杆机构协同优化设计[D].青岛:青岛大学,2016.
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[6]赵弘志,李骏,于秀敏,等.基于稳态模型的CA6GV发动机参数标定优化[J].汽车技术,2010(12):1-6.
[7]赵清海,张洪信,张铁柱,等.液压约束活塞发动机连杆优化设计[J].机械传动,2010,34(1):30-34.
[8]张继游,门永新,彭鸿,等.稳健性和轻量化在整车侧面碰撞性能优化中的应用[J].汽车安全与节能学报,2013,4(4):339-347.
[9]孙光永,李光耀,闫晓磊,等.多目标稳健优化设计方法在车身设计制造中的应用研究[J].固体力学学报,2011,32(2):186-196.
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[11]赖宇阳,姜欣,方立桥,等. Isight参数优化理论与实例详解[M].北京:北京航空航天大学出版社,2012:234-235.
[12]陈立周.稳健设计[M].北京:机械工业出版社,1999:10-13.
[2]王怀敏,张洪信,张铁柱,等. HCPE曲轴优化设计的响应面近似方法[J].青岛大学学报(工程技术版),2011,26(4):1-4.
[3]王文杰,袁寿其,裴吉,等.基于Kriging模型和遗传算法的泵叶轮两工况水力优化设计[J].机械工程学报,2015(15):33-38.
[4]张洪信.一种齿轮联动液压发动机:中国,CN201310015184.4[P]. 2013-04-30.
[5]黄燊,林运蓉,唐吉,等.单缸柴油机曲轴优化设计[J].内燃机,2015(2):15-17.
[6]赵弘志,李骏,于秀敏,等.基于稳态模型的CA6GV发动机参数标定优化[J].汽车技术,2010(12):1-6.
[7]赵清海,张洪信,张铁柱,等.液压约束活塞发动机连杆优化设计[J].机械传动,2010,34(1):30-34.
[8]张继游,门永新,彭鸿,等.稳健性和轻量化在整车侧面碰撞性能优化中的应用[J].汽车安全与节能学报,2013,4(4):339-347.
[9]孙光永,李光耀,闫晓磊,等.多目标稳健优化设计方法在车身设计制造中的应用研究[J].固体力学学报,2011,32(2):186-196.
[10]Sun G,Li G,Zhou S,et al. Crashworthiness design of vehicle by using multiobjective robust optimization[J]. Structural and Multidisciplinary Optimization,2011,44(1):99-110.
[11]赖宇阳,姜欣,方立桥,等. Isight参数优化理论与实例详解[M].北京:北京航空航天大学出版社,2012:234-235.
[12]陈立周.稳健设计[M].北京:机械工业出版社,1999:10-13.