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| 1 | 竖井顶模铸造纯铝凝固过程温度场和应力场的数值模拟显示文摘针对竖井顶模半连续铸造纯铝在凝固过程中的温度场和应力场进行数值模拟.建立了纯铝半连续铸造凝固过程中传热及热应力数学模型和有限元模型.充分考虑了材料及边界条件的非线性特征,对边界条件进行了简化和设置.利用Procast软件对纯铝半连续铸造凝固过程的温度场进行了模拟,并通过现场测温试验,验证了温度场的正确性和有效性.同时,应用Procast应力分析模块模拟和分析了凝固过程的应力场和缩孔缩孔分析,并对裂纹进行了预测,通过与现场产品的裂纹对比,进一步证明了应力场和缩孔缩松的模拟和预测的有效性,从而能够为减少缺陷提高质量提供理论上的指导. | 贾瑞娇 严继康 邱哲生 杨钢 施哲 甘国友 周永全 易健宏 | 2013 | 昆明理工大学学报(自然科学版)2013，38，2： | 8 |
| 2 | Deformation Uniformity of Cold-Rolled Q235 Steel Rebar by FEM in Bending and Rolling Processes显示文摘An analytic model based on ANSYS/LS-DYNA has been developed on the cold rolling process for Q235 steel rebar with 12 mm in diameter. The elastic-plastic finite element method (FEM) and the cold deformation resistance model of Q235 steel were adopted in this model. Deformation uniformity of the final product has been analyzed using this model. The results indicate that the uniformity of the final product is obtained only as the centerline of the bending rolls is vertical to the centerline of the driven roll and parallel to the centerline of the drive roll in the whole rolling process. Besides, the number of the bending rolls must even realize the continuous bending and reverse bending process. Also, the number of the bending rolls must match the deformation degree of the workpiece in the cold rolling process. The validity of this finite element model was verified by the size and distribution of grains from the billet to the rebar in a practical cold rolling process. | SUI Feng-li1, CHEN Qi-wei1, ZHU Guo-hui1, LIU Bao-dong2 (1. Anhui Key Laboratory of Materials and Processing, School of Materials Science and Engineering, Anhui University of Technology, Maanshan 243002, Anhui, China 2. Dongyang Steel Making Co Ltd, Shenyang 110026, Liaoning, China) | 2012 | Journal of Iron and Steel Research(International)2012，19，8： | 4 |
| 3 | 钢-铜包覆管连续减径轧制变形过程研究显示文摘针对冷凝器、热管等热交换器使用的小直径、超长钢-铜包覆管的技术特征,提出了三辊连续减径轧制生产新工艺。结合两种金属固有特性、金属塑性变形理论、三辊连轧技术等,详细制定了包覆管前处理、装配、加热、连续轧制以及热处理方案;通过有限元模拟和试验研究,对其连轧过程中的金属流动规律、管材内径、外径、壁厚变化进行了比较和分析,并测试了包覆管的结合强度。结果证明用该工艺生产超长小直径钢-铜包覆管是可行的。 | 曾庆芦 叶力平 李铂涛 刘昊 帅美荣 | 2016 | 热加工工艺2016，45，3： | 0 |
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