陈嘉伟,欧阳柳,文宇,等.表面织构与复合板联合轧制成形的数值模拟研究[J].精密成形工程,2019,11(4):134-139.
CHEN Jia-wei,OUYANG Liu,WEN Yu,et al.Numerical Simulation of Microstructure and Composite Plate Forming[J].Journal of Netshape Forming Engineering,2019,11(4):134-139. |
| 表面织构与复合板联合轧制成形的数值模拟研究 |
| Numerical Simulation of Microstructure and Composite Plate Forming |
| 投稿时间：2019-06-04 修订日期：2019-07-10 |
| DOI：10.3969/j.issn.1674-6457.2019.04.018 |
| 中文关键词: 复合板 轧制复合 微结构 数值模拟 |
| 英文关键词: composite plate rolling cladding microstructure numerical simulation |
| 基金项目:国家自然科学基金（51275201，51311130129）；吉林大学“大学生创新训练”校级项目（2018B1629） |
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| 中文摘要: |
| 目的 研究结合界面带微织构的复合板的轧制成形过程。方法 基于Deform软件，以CDA-377铜和1100铝复合板为研究对象，模拟铜板表面微织构加工过程以及带微沟槽的铜板与铝板的轧制复合过程，分析整个轧制复合过程中轧制力的变化规律，然后在复合板稳定轧制过程中对板料金属单元进行样点追踪以及应力分析，最后以铝板温度、压下率为变量，分析铝板温度、压下率对稳定轧制阶段轧制力的影响。结果 通过改变铝板温度和压下率进行多次模拟，发现铝板温度为200 ℃，压下率为25%时，在整个复合轧制过程中，咬入阶段轧制力先上升到最大值608 N，随后下降并稳定在366 N左右，并进入稳定轧制阶段；在稳定轧制过程中，铝板基层和凹陷层的应力变化规律基本一致，应变主要集中在铝板一侧；随着铝板温度升高、压下率降低，稳定轧制阶段的轧制力呈下降趋势。结论 微织构复合板轧制过程中轧制力的变化规律、稳定轧制状态下的轧制力受温度和压下率影响的机理与普通复合板基本一致，而稳定轧制状态下结合界面的应力变化规律与微织构相关。 |
| 英文摘要: |
| This paper aims to study on the roll forming process of composite plate with microstructure preprocessed at its bonding interface. Brass-cda-377 copper and aluminum-1100 composite board were taken as research objectives based on the software Deform. The microstructure processing of brass surface and the roll forming process of brass/aluminum composite plate were simulated. Then, the trend of the rolling force in the process of composite roll forming was analyzed and several sampling points were taken out to study its stress during the stable rolling stage. Finally, influences of the temperature of the aluminum plate and the reduction rate on the rolling force in the stable roll forming stage were analyzed through several simulations by changing the temperature of the aluminum plate and the reduction rate. In the whole rolling process, when the temperature of the aluminum plate and the reduction rate were 200 ℃ and 25% respectively, the rolling force was risen up to maximum value 608 N and then was decreased and stabilized at 366 N till the end. The trend of the stress at the upper and lower part of the aluminum plate was alike during the stable stage. And the strain was concentrated on the aluminum plate. With the increase of the temperature of aluminum and lower reduction rate, the force of rolling forming went down. The trend of the rolling force and affected factors of composite plate with microstructure is basically the same as those of common composite plate; while the stress at the bonding interface was highly related to the microstructure and the change rule of stress on the bonding interface. |
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