摘要
基于GB 15084—2013设计了某商用车后视镜镜片。考虑后视镜的安装与注塑工艺要求,对内侧框架、外侧框架及连接卡扣进行了设计。对后视镜装配体进行模态分析,获得固有频率和振型,并计算了谐响应,结果表明,后视镜在承受64 Hz(固有频率)振动时,球头圆孔位置、加强筋底部、框架转角处与圆弧过渡处等区域强度较弱。对后视镜结构进行改进,再次分析发现,镜体的等效应力与变形均处于允许范围内,达到强度与寿命要求。
The rearview mirror for a commercial vehicle was designed based on GB15084—2013.Considering the installation and injection molding process requirements of the rearview mirror,the inner frame,outer frame and connecting clips were designed.Modal analysis was carried out to obtain the intrinsic frequencies and vibration patterns,and then the harmonic response was calculated.The results show that when the rearview mirror was subjected to vibration at 64 Hz(inherent frequency),the strength was weaker in areas such as the location of the round hole of the ball head,the bottom of the reinforcement,the corner of the frame and the transition area of the circular arc.The mirror structure was improved.The analysis shows that the equivalent stress and deformation are within the permissible range,and meet the strength and life requirements.
作者
倪红星
陈荣创
吴张新
Ni Hongxing;Chen Rongchuang;Wu Zhangxin(Hubei Key Laboratory of Critical Materials of New Energy Vehicles,Hubei University of Automotive Technology,Shiyan 442002,China;Dongfeng(Shiyan)Linhong Auto Parts Co.Ltd,Shiyan 442002,China)
出处
《湖北汽车工业学院学报》
2021年第4期26-30,37,共6页
Journal of Hubei University Of Automotive Technology
基金
湖北省自然科学基金(2020CFB374)
大学生创新创业训练项目(DC2019056)。
关键词
后视镜
镜体设计
模态分析
结构优化
rearview mirror
mirror design
modal analysis
structural optimization
