Tolerance Design of Low Noise Humidifier using Monte Carlo and Multi-body Dynamic Simulation

基於Monte Carlo和多體動力學模擬的低雜訊加濕器公差設計

李晶雨(Jungwoo Lee) ； 張俊赫(Junhyuck Jang) ； 沁在勳(Jaehoon Sim) ； 鄭義峰(Weuibong Jeong)

《中國機械工程學刊》 40卷5期 (2019/10) Pp. 515-522

摘要

In case of general home appliance product, resin parts are widely used due to economic efficiency and structural design freedom. However, Resin parts have shape and dimensional variations depending on the injection and cooling conditions when they are injected. When various parts are assembled, the accumulated tolerances may cause degradation of product performance or NVH problem. Particularly, the tolerance of the system in which its operating conditions are varied during operation becomes greater. In this study, Monte Carlo simulation is used to obtain the tolerance variation of the humidifier parts considering the changing operating conditions. And multibody dynamics analysis is also used to secure the operability of the driving part and low noise level. Experiments were also carried out to verify the noise and vibration level. This study is expected to be useful in the early stage of research before prototyping.

關鍵字

tolerance design ； Monte Carlo simulation ； multi-body dynamic simulation ； spur gear

並列摘要

在普通家用電器產品的情況下，由於經濟效率和結構設計自由度，塑膠部件被廣泛使用。然而，塑膠部件的形狀和尺寸變化取決於注射時的注射和冷卻條件。當組裝各種部件時，累積 的公差可能導致產品性能下降或NVH問題。特別是，在操作期間其操作條件變化的系統的公差變得更大。在本研究中，考慮到操作條件的變化，使用Monte Carlo模擬來獲得加濕器部件的公差變化。並且多體動力學分析還用於確保驅動部件的可操作性和低雜訊水準。還進行了實驗以驗證雜訊和振動水準。預計該研究在原型製作之前的研究早期階段是有用的。