Transactions of Materials and Heat Treatment

Title：Blanking life model of V-groove bar based on dual-frequency excitation system

Authors： Hua Chunjian Ren Haojing Lu Yunjian

Unit： Jiangnan University

KeyWords： dual-frequency excitation system V-groove bar stress intensity factor blanking life model low stress loading technology with compound frequency excitation

ClassificationCode：TB534

year,vol(issue):pagenumber：2019,44(7):177-183

Abstract：

For the study of V-groove bar blanking under dual-frequency excitation system, it is extremely important to establish the relationship between the blanking life and the geometry parameters and loading state of V-groove bar. First, the calculating formula of stress intensity factor SIF in the crack tip of V-groove bar was derived, and according to the established dynamic model of dual-frequency excitation system, the stress spectrum in the crack tip of V-groove bar was plotted. Then, the complex stress was simplified, and the SIF value in the crack tip of V-groove bar was obtained under the compound frequency excitation. Furthermore, based on the crack extension life formula, the blanking life model under the single frequency excitation was generalized, and based on the SIF superposition principle, the blanking life model under the compound frequency excitation was generalized. Finally, the experimental results were consistent with that of the model analysis by the designed experiment under the dual-frequency excitation system, and the correctness of the established blanking life model was verified.

Funds：

国家自然科学基金资助项目（61573168）；中央高校基本科研业务费专项基金资助项目（JUSRP11008）

化春键（1975-），男，博士，副教授，E-mail：277795559@qq.com

Reference：

[1[化春键,袁浩.一种新型高低频复合振动装置的研究[J[.机械设计与制造工程，2016, 45(2):90-94.

Hua C J, Yuan H. Study on a new type of high and low frequency composite vibration device[J[. Machine Design and Manufacturing Engineering, 2016, 45(2):90-94.

[2[化春键,陆云健,袁浩.新型双变频振动结构及其振动特性研究[J[.现代制造工程, 2018, (6):1-5,11.

Hua C J, Lu Y J, Yuan H. A new type of double-frequency conversion vibration structure and its vibration characteristics [J[. Modern Manufacturing Engineering, 2018, (6): 1-5,11.

[3[张立军,赵永瑞,赵升吨.预制棒料V形槽尖端裂纹实验装置的改进[J[.制造技术与机床, 2012, (10):128-130.

Zhang L J, Zhao Y R, Zhao S D. Improvement of experimental device for prefabricating V-shaped notch tip crack[J[. Manufacturing Technology & Machine Tool, 2012, (10):128-130.

[4[赵仁峰, 赵升吨,钟斌,等.低周疲劳精密下料新工艺及试验研究[J[.机械工程学报,2012,48(24):38-43.

Zhao R F, Zhao S D, Zhong B, et al. Experimental study on new low cycle fatigue precision cropping process[J[. Journal of Mechanical Engineering, 2012, 48(24): 38-43.

[5[宫经全,张少钦,李禾, 等.基于相互作用积分法的应力强度因子计算[J[.南昌航空大学学报:自然科学版，2015, 29(1):42-48.

Gong J Q, Zhang S Q, Li H, et al. Computation of the stress intensity factor based on the interaction integral method [J[. Journal of Nanchang Hangkong University: Natural Science Edition, 2015,29(1):42-48.

[6[贾旭,胡绪腾,宋迎东.基于三维裂纹尖端应力场的应力强度因子计算方法[J[.航空动力学报，2016,31(6):1417-1426.

Jia X, Hu X T, Song Y D. Calculation method of stress intensity factor based on the three-dimensional stress field at the crack tip[J[. Journal of Aerospace Power, 2016, 31(6): 1417-1426.

[7[中国航空研究院. 应力强度因子手册[M[. 北京：科学出版社，1993.

China Aviation Research Institute. Stress Intensity Factor Handbook [M[. Beijing: Science Press, 1993.

[8[Madia M, Beretta S, Schdel M, et al. Stress intensity factor solutions for cracks in railway axles[J[. Engineering Fracture Mechanics, 2011, 78(5): 764-792.

[9[张晓斌. 中国标准动车组轮轴载荷谱与应力谱的试验研究[D[. 北京：北京交通大学，2018.

Zhang X B. The Study on Stress and Load Spectrum of the Wheel Axle of CR [D[. Beijing: Beijing Jiaotong University, 2018.

[10[程靳，赵树山.断裂力学[M[.北京：科学出版社，2006.

Cheng J, Zhao S S. Fracture Mechanics [M[. Beijing: Science Press, 2006.

[11[王玉光,吴圣川,李忠文,等.一种基于低周疲劳特性的含缺陷车轴剩余寿命预测模型[J[.铁道学报,2018,40(11):27-32.

Wang Y G, Wu S C, Li Z W, et al. A low cycle fatigue characteristics based residual life prediction model for railway axles with flaws[J[. Journal of the China Railway Society, 2018, 40(11):27-32.

[12[化春键, 赵升吨, 宋涛, 等. V型槽几何参数对裂纹萌生的影响规律[J[.西安交通大学学报，2004，38(9):947-950.

Hua C J, Zhao S D, Song T, et al. Influence of the geometric parameters of the V shaped groove on initialization of ideal crack in precision cropping[J[. Journal of Xi′an Jiaotong University, 2004, 38(9): 947-950.

[13[Zhang L J, Zhao S D, Lei J, et al. Investigation on the bar clamping position of a new type of precision cropping system with variable frequency vibration[J[. International Journal of Machine Tools & Manufacture, 2007, 47(7): 1125-1131.

[14[化春键,陆云健,袁浩.双频振动载荷下带V型槽铝合金棒料的断裂行为[J[.中国机械工程，2017,28(14):1753-1758.

Hua C J, Lu Y J, Yuan H. Fracture behavior of aluminum alloy bars with V-shape notchs under dual frequency vibration loads[J[. China Mechanical Engineering, 2017, 28(14): 1753-1758.

Service：

【This site has not yet opened Download Service】【Add Favorite】