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Laser fracture splitting technology significantly improves the processing quality and efficiency of engine crankcase main bearing block. In order to research the splitting mechanism of ductile iron material fracture notch cauterized by Nd: YAG Laser, the FEAmodel of fracture splitting processing of engine crankcase main bearing block has been developed successfully. The splitting parameters of ductile iron material (QT500-7) main bearing block is analyzed. The numerical simulation results indicate that: among all the key parameters affecting the quality of fracture splitting, the effect of notch depth on fracture splitting load is more obvious than that of the notch opening angle and radius. The value of splitting load decreases rapidly with the increasing notch depth, while the splitting load increases with the increasing notch angle and radius. The optimum value of the notch depth, angle, and radius should be respectively at 0.5 mm, 60 o, and 0.2 mm. The results have been proved by experiments. The optimum parameters obtained from the ABAQUS simulation and experiments provide a numerical reference for significantly reducing the splitting load and optimizing the fracture splitting process, help to achieve the rapid development of engine block process and promote the green manufacture of automobile industry.
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Keywords:
- laser fracture splitting technology /
- notch /
- ductile iron /
- finite element method
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[2] Sawyer C A, Guzman J, Boswell-Koller C N, Sherburne M P, Mastandrea J P, Bustillo K C, Ager J W, Haller E E, Chrzan D C, 2011 J. Appl. Phys. 10 094307
[3] Lin Y F, Zh G, Zhu H Y, Huang C H, Li A H, Wei Y 2009 Acta Phys. Sin. 58 3909 (in Chinese) [林燕风, 张戈, 朱海勇, 黄呈辉, 李爱红, 魏永 2009 58 3909]
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[6] Zheng Q F 2010 Ph. D. Dissertation (Changchun: Jilin University) (in Chinese) [郑祺峰 2010 博士学位论文 (长春: 吉林大学)]
[7] Akihiro MATSUGASAKO 2011 KOBELCO Technol Rev. 30 57
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[9] Liu Z F, Yang Z G, He S K, Jiang S H 2011 Modern Components 3 48 (in Chinese) [刘赞丰, 杨志刚, 何善开, 江水浩 2011 现代零部件 3 48]
[10] Yang S H, Kou S Q, Gu Z W, Jin W M, Zhao Y 2000 J. Hit 32 129 (in Chinese) [杨慎华, 寇淑清, 谷诤巍, 金文明, 赵勇 2000 哈尔滨工业大学学报 32 129]
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[12] Zheng L M, Kou S Q, Yang S H, Li L L, Li F 2010 Opt. Laser Technol. 42 985
[13] Amit S, Vinod Y 2012 Opt. Laser Technol. 44 159
[14] Lu J, Ni X W, He A Z 1996 Laser and Material Interaction Physics (Beijing: Mechanical Industry Press) pp35--37 (in Chinese) [陆建, 倪晓武, 贺安之 1996 激光与材料相互作用物理学 (北京: 机械工业出版社)第35---37页]
[15] Fan T Y 1978 Fracture Mechanics (Nanjing: Jiangsu Science and Technology Press) p333 (in Chinese) [范天佑 1978 断裂力学基础 (南京: 江苏科学技术出版社) 第333页]
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[17] Zhang D, Harris S J, McCartney D G, Pashby I R, Powell J, Shipway P H, Voisey K T 2008 Mat. Sci. Eng. A 489 273
[18] Xie D, Qian Q, Li C A 2009 Numerical Methods and Engineering Applications of Fracture Mechanics (Beijing: Science Press) p145 (in Chinese) [解德, 钱勤, 李长安 2009 断裂力学中的数值计算方法与工程应用 (北京: 科学出版社) 第145页]
[19] Filippo Berto 2012 Int. J. Fatigue. 38 188
[20] He D Y 2009 Ph. D. Dissertation (Changchun: Jilin University) (in Chinese) [何东野 2011 博士学位论文 (长春: 吉林大学)]
[21] Zhang X Z, Cai, Q Z, Chen, Q F, Zhou, G F, Xiong Y Z 2011 Research on Iron and Steel 39 15 (in Chinese) [张贤忠, 蔡启舟, 陈庆丰, 周桂峰, 熊玉彰 2011 钢铁研究 39 15]
[22] Zhang X Z, Cai, Q Z, Chen, Q F, Zhou G F, Xiong Y Z 2011 J. Mater Sci. 46 1789
[23] Boo K S, Cho H S 1990 Proc. Instn. Mech. Engrs. 204 175
[24] Wang J W 2011 Ph. D. Dissertation (Changchun: Jilin University) (in Chinese) [王金伟 2011 博士学位论文 (长春: 吉林大学)]
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[1] Gault B, Chen Y M, Moody M P, Ohkubo T, Hono K, Ringer S P 2011 J. Appl. Phys. 10 094901
[2] Sawyer C A, Guzman J, Boswell-Koller C N, Sherburne M P, Mastandrea J P, Bustillo K C, Ager J W, Haller E E, Chrzan D C, 2011 J. Appl. Phys. 10 094307
[3] Lin Y F, Zh G, Zhu H Y, Huang C H, Li A H, Wei Y 2009 Acta Phys. Sin. 58 3909 (in Chinese) [林燕风, 张戈, 朱海勇, 黄呈辉, 李爱红, 魏永 2009 58 3909]
[4] Yu B H, Dai N L, Wang Y, Li Y H, Ji L L, Zheng Q G, Lu P X 2007 Acta Phys. Sin. 56 5821 (in Chinese) [余本海, 戴能利, 王英, 李玉华, 季玲玲, 郑启光, 陆培祥 2007 56 5821]
[5] Shao D, Hu B, Zheng Q G 2009 Laser and Advanced Manufacturing Technology and Equipment Integration (Beijing: Science Press) p56 (in Chinese) [邵丹, 胡兵, 郑启光 2009 激光先进制造技术与设备集成 (北京: 科学出版社) 第56页]
[6] Zheng Q F 2010 Ph. D. Dissertation (Changchun: Jilin University) (in Chinese) [郑祺峰 2010 博士学位论文 (长春: 吉林大学)]
[7] Akihiro MATSUGASAKO 2011 KOBELCO Technol Rev. 30 57
[8] Zhao Y, Yang S H, Zheng Q F, Jin W M 2011 J. JLU (Engineering and Technology Edition) 41 984 (in Chinese) [赵勇, 杨慎华, 郑祺峰, 金文明 2011 吉林大学学报(工学版) 41 984]
[9] Liu Z F, Yang Z G, He S K, Jiang S H 2011 Modern Components 3 48 (in Chinese) [刘赞丰, 杨志刚, 何善开, 江水浩 2011 现代零部件 3 48]
[10] Yang S H, Kou S Q, Gu Z W, Jin W M, Zhao Y 2000 J. Hit 32 129 (in Chinese) [杨慎华, 寇淑清, 谷诤巍, 金文明, 赵勇 2000 哈尔滨工业大学学报 32 129]
[11] Kou S Q, Yang S H, Zhao Q H, Zhang Z Q 2007 J. Hit 39 1147 (in Chinese) [寇淑清, 杨慎华, 赵庆华, 张志强 2007 哈尔滨工业大学学报 39 1147]
[12] Zheng L M, Kou S Q, Yang S H, Li L L, Li F 2010 Opt. Laser Technol. 42 985
[13] Amit S, Vinod Y 2012 Opt. Laser Technol. 44 159
[14] Lu J, Ni X W, He A Z 1996 Laser and Material Interaction Physics (Beijing: Mechanical Industry Press) pp35--37 (in Chinese) [陆建, 倪晓武, 贺安之 1996 激光与材料相互作用物理学 (北京: 机械工业出版社)第35---37页]
[15] Fan T Y 1978 Fracture Mechanics (Nanjing: Jiangsu Science and Technology Press) p333 (in Chinese) [范天佑 1978 断裂力学基础 (南京: 江苏科学技术出版社) 第333页]
[16] A F M Arif, Bekir Samir Yilbas Thermal 2008 Int J Adv Manuf Technol. 37 698
[17] Zhang D, Harris S J, McCartney D G, Pashby I R, Powell J, Shipway P H, Voisey K T 2008 Mat. Sci. Eng. A 489 273
[18] Xie D, Qian Q, Li C A 2009 Numerical Methods and Engineering Applications of Fracture Mechanics (Beijing: Science Press) p145 (in Chinese) [解德, 钱勤, 李长安 2009 断裂力学中的数值计算方法与工程应用 (北京: 科学出版社) 第145页]
[19] Filippo Berto 2012 Int. J. Fatigue. 38 188
[20] He D Y 2009 Ph. D. Dissertation (Changchun: Jilin University) (in Chinese) [何东野 2011 博士学位论文 (长春: 吉林大学)]
[21] Zhang X Z, Cai, Q Z, Chen, Q F, Zhou, G F, Xiong Y Z 2011 Research on Iron and Steel 39 15 (in Chinese) [张贤忠, 蔡启舟, 陈庆丰, 周桂峰, 熊玉彰 2011 钢铁研究 39 15]
[22] Zhang X Z, Cai, Q Z, Chen, Q F, Zhou G F, Xiong Y Z 2011 J. Mater Sci. 46 1789
[23] Boo K S, Cho H S 1990 Proc. Instn. Mech. Engrs. 204 175
[24] Wang J W 2011 Ph. D. Dissertation (Changchun: Jilin University) (in Chinese) [王金伟 2011 博士学位论文 (长春: 吉林大学)]
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