基于响应面法的卷簧扭振减振器优化

Optimization of Coil Spring Torsional Vibration Absorber Based on Response Surface Method

在柴油机中,发动机扭矩波动会不可避免地产生曲轴系扭转振动,经常使用卷簧减振器进行减振,其中减振器的力学性质和工作可靠性是判断减振器优良的重要标准。针对减振器受力效果进行数学建模,将其力学计算进行程序的编写,并基于响应面法,以卷簧片中的三个因子对卷簧扭振减振器的减振效果进行数学建模,对卷簧扭振减振器承受应力前期线性阶段的减振效果进行优化,即在刚度一定的条件下,使簧片强度达到期望目标。经过优化,得出了更优的设计方案。通过对卷簧扭振减振器的优化,体现响应面法在结构优化中的高效性。

In diesel engine, the torsional vibration of crankshaft will inevitably occur due to the fluctuation of engine torque. Coil spring dampers are often used for vibration reduction. The mechanical properties and working reliability of dampers are important criteria for judging the excellent performance of dampers. In this paper, based on response surface method, three factors in the reed are used to model and program the vibration reduction effect of the spring torsional vibration absorber. The vibration reduction effect of the spring torsional vibration absorber in the pre-stress partial linear stage is optimized, that is, under the condition of certainstiffness, the spring strength can reach the desired goal. After optimization, a better design scheme is obtained. By optimizing the coiled spring torsional vibration absorber, the response surface method has a very high efficiency in structural optimization.