金属基复合板基层覆层比对矫直中性层偏移量的影响  

The influence of base-cladding layer ratio to the neutral layer offset in the bimetal composite plate straightening process

作　　者：李海 桂海峰 王亚东 邢彤 张康康 桂海莲[1,2] LI Hai;GUI Hai-feng;WANG Ya-dong;XING Tong;ZHANG Kang-kang;GUI Hai-lian(Engineering Research Center Heavy Machinery Ministry of Education,Taiyuan University of Science and Technology,Taiyuan 030024,China;Material Science&Engineering Science College,Taiyuan University of Science and Technology,Taiyuan 030024,China;Shanxi Diesel Engine Industry Co.,Ltd.,Datong 037036,China;Office of chief engineer,Jiangsu Shagang Group Co.,Ltd.,Zhangjiagang 215600,China)

机构地区：[1]太原科技大学重型机械教育部工程研究中心,山西太原030024 [2]太原科技大学材料科学与工程学院,山西太原030024 [3]山西柴油机工业有限责任公司,山西大同037036 [4]江苏沙钢集团有限公司总工程师办公室,江苏张家港215600

出　　处：《重型机械》2020年第5期42-45,共4页Heavy Machinery

基　　金：国家级大学生创新创业训练项目(2019343);国家重点研发计划课题(2018YFA0707305);国家自然科学基金项目(51675362);山西省科技重大专项(20181102016)。

摘　　要：结合复合板基层覆层材料性能差异的特点,本文对基层与覆层在矫直时的金属流动特点进行系统研究。通过分析基层覆层横截面受力规律,推导出不同金属材料的中性层偏移公式,并利用Abaqus软件对矫直过程进行有限元模拟研究。结果表明,当基层覆层比为3∶1时,中性层偏移量理论计算值与有限元分析误差为11.56%。当基层覆层比为1∶1时,中性层偏移量理论计算值与有限元分析误差为7.39%。通过对不同基层覆层比进行研究,说明基层覆层比是中性层偏移理论的重要影响因素之一,在建立矫直模型时不能忽略。此结论为建立更加精确的矫直模型提供重要的理论参考。According to the differences material properties of the bimetal composite plate,the metal flow characteristics of the base and cladding during straightening are systematically studied in the straightening process.The stress of cross section is theoretically analyzed and the neutral layer offset formula of different metal materials is obtained.The straightening process is simulated by ABAQUS software.When the base-cladding layer ratio is 3∶1,the error between the theoretical value and the finite element analysis is 11.56%.When the base-cladding layer ratio is 1∶1,the error between the theoretical value and the finite element analysis is 7.39%.Based on the results of the different base-cladding layer ratio,it illustrates that the base-cladding layer ratio is one of the important influencing factors of neutral layer offset theory,which could not be ignored in the establishment of straightening model.The results provide a theoretical reference for the establishment of a more accurate straightening model.

关 键 词：矫直 中性层偏移 双金属复合板 有限元法 

分 类 号：TH333.2[机械工程—机械制造及自动化]