滚筒洗衣机悬挂系统部件结构强度的多体动力学分析  

Multi-body dynamics analysis of the structural strength of the suspension system components of a drum washing machine

作　　者：任子林 杨洪永 许鹏 龙斌华 REN Zilin;YANG Hongyong;XU Peng;LONG Binhua(Gree Electric Appliances,Inc.of Zhuhai,Zhuhai,519070)

机构地区：[1]珠海格力电器股份有限公司,广东珠海519070

出　　处：《家电科技》2023年第4期46-51,共6页Journal of Appliance Science & Technology

摘　　要：以某一型号滚筒洗衣机悬挂系统为例,首先分别采用多体动力学和线性静态分析方法计算了固定约束工况的滚筒洗衣机外筒强度,并将其计算结果进行了对比和分析。其次,基于多体动力学分析了重力对外筒强度计算结果的影响。最后,利用滚筒洗衣机全模型,校核了外筒、轴、轴承座和三脚架的强度。结果表明:线性静态分析与多体动力学分析得到的外筒最大位移差和最大应力差均随旋转部件转速的增大而增大。重力的考虑使外筒最大位移增大2.70%、最大应力增大1.59%。强度校核滚筒洗衣机全模型得到外筒、轴、轴承座和三脚架的安全系数均在2.5以上。计算得到滚筒洗衣机前/后轴承额定寿命分别为633 h和768 h。Taking the suspension system of a specific type of drum washer as an example.Firstly,the strength of a drum washer is calculated under fixed restraint conditions by multi-body dynamics and linear static analysis methods,respectively,and the calculation results are compared and analyzed.Secondly,based on multi-body dynamics,the influence of gravity on the strength calculation results of the tub is analyzed.Finally,the strength of the tub,shaft,housing bearing,and flange shaft is checked by the complete model of a drum washer.The results show that the maximum displacement and the maximum stress difference of the tub increase with the rotational speed of the rotating parts were obtained through linear static and multi-body dynamics analysis.The consideration of gravity increases the maximum displacement of the tub by 2.70%and the maximum stress by 1.59%.The safety factors of the tub,shaft,housing bearing,and flange shaft are above 2.5 by checking the complete model of a drum washer.By calculation,the rating life of the front/rear bearings of a drum washer is 633 h and 768 h.

关 键 词：滚筒洗衣机 多体动力学 线性静态分析 强度计算 

分 类 号：TM925.33[电气工程—电力电子与电力传动]