CAJ | 학술논문

运用有限元分析软件对厚板齿形零件的精冲过程进行了数值模拟，对比分析了齿顶、齿根部位主要变形区静水应力及应变的分布情况。结果显示，齿顶处静水压应力小于齿根处；齿顶应变区的宽度大于齿根应变区的宽度，齿顶剪切区变形程度大，硬化程度严重。齿根、齿顶处的应变分布与精冲试验所得零件的硬化程度相吻合。探究了齿顶处形成大塌角和易产生撕裂的原因。研究结果为厚板齿形零件的精冲工艺提供了理论指导。
운용유한원분석연건대후판치형령건적정충과정진행료수치모의，대비분석료치정、치근부위주요변형구정수응력급응변적분포정황。결과현시，치정처정수압응력소우치근처；치정응변구적관도대우치근응변구적관도，치정전절구변형정도대，경화정도엄중。치근、치정처적응변분포여정충시험소득령건적경화정도상문합。탐구료치정처형성대탑각화역산생시렬적원인。연구결과위후판치형령건적정충공예제공료이론지도。
The numerical simulation was made on the fine blanking process of thick plate tooth profile part by using the finite element analysis software; and the distribution of hy-drostatic stress and strain in the main deformation zone of addendum and tooth root were comparatively analyzed. The result shows that the hydrostatic stress in the addendum is less than that in the tooth root; the width of strain zone in the addendum is larger than that in the tooth root; the deformation and hardening degree in the addendum shear zone is large. The strain distribution in the addendum and tooth root agrees to the hardening de-gree of test samples. Finally the causes of large corner collapse and tear problem easily formed in the addendum were explored.