基于剩余寿命的柱塞泵可再制造性评估

Remanufacturability evaluation of piston pump based on remaining life

为了实现对柱塞泵可再制造性的定量评估,首先以柱塞泵为研究对象,进行其疲劳寿命研究。建立了柱塞泵刚-柔-液联合仿真模型,研究了在柱塞泵运行过程中转速、负载压力对柱塞最大应力和疲劳寿命的影响规律。结果显示:随着转速提高,柱塞所受到的最大应力呈指数递增,柱塞的疲劳寿命则呈指数递减;随着负载压力的增大,柱塞所受到的最大应力呈线性增大,柱塞的疲劳寿命则呈对数递减。在柱塞泵疲劳寿命分析的基础上,建立了以剩余寿命和零部件可加工性为指标的技术评估体系,并综合考虑了经济和环境指标,提出了柱塞泵可再制造性量化评估模型和方法,并进行了工程应用分析,验证了所提出方法的合理性和可行性。

In order to quantitatively evaluate the remanufacturability of piston pump,the fatigue life was studied with the piston pump as the research object.The rigid-flexible-liquid joint simulation model of the piston pump was established,and the effects of rotational speed and load pressure on the maximum stress and fatigue life of the piston pump were studied.The results showed that the maximum stress on the piston pump increased exponentially with the rotational speed increasing,while the fatigue life of the piston pump decreased exponentially.With the increase of load pressure,the maximum stress increased linearly,and the fatigue life decreased logarithmically.Based on the fatigue life analysis of the piston pump,a technical evaluation system with remaining life and parts processability as indexes was established,and economic and environmental indexes were comprehensively considered.A quantitative evaluation model and method for the remanufacturability of the piston pump were proposed,and engineering application analysis was carried out to verify the rationality and feasibility of the proposed method.