Analysis on Flexible and Rigid Blank-holders Technology Applying on Thin Sheet Metal in Multi-point Forming

Abstract

Abstract: Different technologies about rigid blank-holder forming and flexible blank-holder forming are simulated, and the influence on wrinkle, crack and forming limit from the two different technologies is also analyzed. Furthermore this process is numerically simulated by explicit software LS-DYNA for U-shaped parts with two kinds of thickness. The results show that in the rigid blank-holder forming, the formed part will wrinkle when the deformation is great, and will rupture when the blank-holder force is great. But under the same condition, by using the flexible blank-holder forming technology, the formed part is good, moreover, when the width of blank-holder surface is reduced to 1/2 of the original one. Good forming result can be obtained by increasing the blank-holder force. The flexible blank-holding technology can greatly increase the utilization efficiency of sheet metal, improve the forming limit sheet metal, and avoid various defects.

Key words: Flexible blank-holder, Forming limit, Multi-point forming, Numerical simulation Rigid blank-holder, Sheet metal

CLC Number:

TG386.3

SUN Gang;LI Mingzhe;DENG Yushan;LI Xiangji. Analysis on Flexible and Rigid Blank-holders Technology Applying on Thin Sheet Metal in Multi-point Forming[J]. , 2008, 44(5): 147-151.

[1]	CUI Xuexi, WAN Min, WU Xiangdong, GUAN Bobin, ZHOU Bingying. Method for Determining Localized Instability Based on Strain Evolution [J]. Journal of Mechanical Engineering, 2023, 59(22): 234-244.
[2]	MU Zhenkai, ZHAO Jun, YU Gaochao, HUANG Xueying, SUN Honglei. Determination Methods of Anisotropic Coefficient R-values of Sheet Metal and Its Evolution in Subsequent Yielding [J]. Journal of Mechanical Engineering, 2022, 58(6): 91-100.
[3]	GAO Song, SUN Yingli, LI Qihan, HE Tonggui, LIANG Jicai, XU Chuanwei. Precision Forming of the Asymmetric 3D Stretch-press Bending Parts for the Windows of the High Speed Trains [J]. Journal of Mechanical Engineering, 2021, 57(18): 222-228.
[4]	RONG Hai, YING Liang, HU Ping, HOU Wenbin. Theoretical Prediction and Numerical Simulation Investigation of the Thermal Forming Limit of 7075 Aluminum Alloy Based on Continuum Damage Mechanics [J]. Journal of Mechanical Engineering, 2020, 56(24): 51-60.
[5]	LIU Jingyuan, CUI Xiaolei. Plastic Deformation Mechanisms and Rolling Technology of Uranium and Uranium Alloy [J]. Journal of Mechanical Engineering, 2020, 56(18): 22-34,42.
[6]	XIE Yanmin, ZHANG Fei, PAN Beibei, FENG Meiqiang, YUE Yaopeng. Optimization of Drawbeads Based on Parallel Infilling Strategy and Kriging Models [J]. Journal of Mechanical Engineering, 2019, 55(8): 73-79.
[7]	YU Gaochao, ZHAO Jun. Evolution of Mechanical Properties in Cyclic Tension-compression Loading on Sheet Metal [J]. Journal of Mechanical Engineering, 2019, 55(4): 33-41.
[8]	GAO Song, YU Changchun, LIANG Jicai, LI Qihan, HAO Zhaopeng, LIU Xiaoyong, ZHAO Xilu. Multi-points 3D Stretch-press Bending Technology for Aluminum Profile [J]. Journal of Mechanical Engineering, 2019, 55(20): 152-159.
[9]	YANG Zhuoyun, ZHAO Changcai, DONG Guojiang, CHEN Guang, ZHU Liangjin, DU Bing. Forming Limit Research of 5182 Aluminum Alloy Sheet Based on Lou-2013 Ductile Fracture Criterion [J]. Journal of Mechanical Engineering, 2019, 55(16): 47-57.
[10]	ZHANG Lei, HUANG Chuanhui, ZHU Enxu, WANG Lei, DONG Yan. Data-driven Modeling-based Variation Analysis for the Compliant Sheet Metal Assemblies [J]. Journal of Mechanical Engineering, 2019, 55(10): 34-41.
[11]	DU Bing, GUAN Fenglong, SONG Pengfei, HAN Zhaojian, ZHANG Xin, ZHAO Changcai. Numerical Simulation Methods of Sheet Metal Wrinkling Instability Problem [J]. Journal of Mechanical Engineering, 2018, 54(24): 42-50.
[12]	KONG Zheng, KONG Ning, ZHANG Jie, LI Hongbo. Mechanical Property of Dual Phase Steel and Its Effect on the Forming Limit [J]. Journal of Mechanical Engineering, 2017, 53(12): 140-146.
[13]	YANG Li, JIN Zhenlin, QIN Siji, ZOU Fenggang, HUANG Yongchao. Modeling and Optimization of Composite and Servo-driven Actuator for Blank-holder Force Control [J]. Journal of Mechanical Engineering, 2015, 51(3): 139-145.
[14]	LIU Yulin;CHEN Wenliang;BAO Yidong;DING Liping. Non-probabilistic Robust Optimization for Polygon Blank Shape Based on Interval Analysis [J]. , 2014, 50(10): 65-71.
[15]	MENG Bao;WAN Min;WU Xiangdong;YUAN Sheng;XU Xudong;LIU Jie. Development of Dynamic Loading System for Sheet Metal Hydrodynamic Deep Drawing and Its Application [J]. , 2013, 49(24): 60-66.

Analysis on Flexible and Rigid Blank-holders Technology Applying on Thin Sheet Metal in Multi-point Forming

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments