摘要
基于ABAQUS软件,为汽车排气系统不锈钢厚法兰建立了采用网格重划分技术及网格局部细化技术的有限元模型。保持其他影响因素不变,考察凹凸模间隙和齿圈压板位置对坯料剪切变形区静水压应力量值和分布的影响。分别取凹凸模间隙为0.03,0.04和0.05 mm,当凹凸模间隙为最小值0.03 mm时,坯料剪切变形区静水压应力的均值最大、方差最小,大值静水压应力分布状况最为广泛且均匀。分别取齿圈压板位置为2.4,2.7和3.0 mm,当齿圈压板位置为中值2.7 mm时,坯料剪切变形区静水压应力有着与凹凸模间隙取最小值0.03 mm时类似的情形。同时,仿真结果已得到生产应用。
For the stainless steel thick flange of automotive exhaust system,based on the grid technology with redivision and local refinement technology,the finite element model was established by software ABAQUS,and under the other influencing factors unchanged,the influences of the clearance between die and punch and the ring gear pressure plate location on the magnitude and distribution of hydrostatic stress in the shear deformation zone for blank were investigated. Then,the clearance between die and punch was taken as 0. 03,0. 04 and 0. 05 mm respectively. When the clearance between die and punch was the minimum value of 0. 03 mm,the mean value of hydrostatic stress in the shear deformation zone of blank was the largest and the variance was the smallest,and the large-value hydrostatic stress distribution was the most extensive and uniform. Furthermore,the ring gear pressure plate location was selected 2. 4,2. 7 and 3. 0 mm respectively,and when the ring gear pressure plate location was the middle value of 2. 7 mm,the hydrostatic stress in the shear deformation zone of blank was similar to that when the clearance between die and punch was the minimum value of 0. 03 mm. At the same time,the simulation results were applied in production.
作者
谈正光
张雨
Tan Zhengguang;Zhang Yi(Wuxi Pengde Vehicle Parts Co.,Ltd.,Yixing 214211,China;School of Automotive&Rail Transit,Nanjing Institute of Technology,Nanjing 211167,China)
出处
《锻压技术》
CAS
CSCD
北大核心
2020年第6期64-70,共7页
Forging & Stamping Technology
基金
江苏省经信委2015年两化深度融合创新示范工程项目(苏经信企信[2015]660号)。
关键词
不锈钢厚法兰
精冲
静水压应力
模具间隙
齿圈压板位置
stainless steel thick flange
fine-blanking
hydrostatic stress
mold clearance
ring gear pressure plate location
