基于单向拉伸的半固化GLARE层板成形性能分析  

Analysis on forming performance of semi-cured GLARE laminate based on uniaxial tensile

作　　者：李磊 郎利辉[1] 轩永波[2] 王洪锋 Li Lei;Lang Lihui;Xuan Yongbo;Wang Hongfeng(School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,China;Unit 93236,People's Liberation Army,Beijing 100000,China;Unit 93175,People's Liberation Army,Changchun 130000,China)

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191 [2]中国人民解放军93236部队,北京100000 [3]中国人民解放军93175部队,吉林长春130000

出　　处：《锻压技术》2021年第2期200-205,共6页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(51675029)。

摘　　要：通过半固化工艺制备GLARE层板以提高其成形性能,成形后再固化以达到使用要求。为了了解半固化工艺制备的GLARE层板的成形性能,利用单向拉伸试验方法,分别对不同铺层厚度的GLARE2和GLARE3层板进行力学性能测试。试验结果表明,半固化层板的拉伸曲线依然符合传统层板的双线性特征。半固化工艺制备的GLARE2层板的成形性能相较于固化的GLARE2层板提升较小,相反,GLARE3层板的成形性能提升比较明显。通过半固化工艺可以有效地降低屈服强度、提高伸长率、降低成形抗力。特别是GLARE3-3/2层板,具有相对较高的成形性能,其屈服强度为153.0 MPa、抗拉强度为301.7 MPa、伸长率为5.9%。这说明半固化制备工艺可以有效地改善GLARE层板的成形性能,实现大曲率零件的成形。The GLARE laminate was prepared by the semi-curing process to improve its formability,and then it is cured after forming to meet the requirements in service. In order to understand the formability of GLARE laminate prepared by the semi-curing process,the mechanical properties of GLARE2 and GLARE3 laminates with different layer thicknesses were tested by the uniaxial tensile test method. The test results show that the tensile curve of semi-cured laminate still conforms to the bilinear characteristics of traditional laminate,and the formability of GLARE2 laminate prepared by the semi-curing process is less improved than that of the cured GLARE2 laminate. On the contrary,the formability of GLARE3 laminate is significantly improved,and the semi-curing process effectively reduces the yield strength,increases the elongation,and reduces the forming resistance. In particular,the GLARE3-3/2 laminate has relatively high formability with the yield strength of 153. 0 MPa,the tensile strength of 301. 7 MPa and the elongation of 5. 9%. Thus,the semi-curing preparation process effectively improves the formability of GLARE laminate and realizes the forming of parts with large curvature.

关 键 词：纤维金属层板 GLARE层板 拉伸性能 成形性能 半固化 

分 类 号：TG306[金属学及工艺—金属压力加工]