摘要
研究了多层微细通道平行流式换热器的绕弯成形过程。基于绕弯成形机理和LS-DYNA软件平台建立了多层换热器的有限元模型,并通过实验的方法,研究了换热器层数和弯曲力矩之间的关系及换热器和翅片的变形情况,验证了有限元模型的可靠性。利用验证过的有限元模型,分析了不同的翅片形状及弯曲半径对换热器成形质量的影响。研究结果表明,随着换热器层数的增加,弯曲力矩呈线性增加;对于不同形状的翅片,三角形翅片更适合微细通道平行流式换热器的弯曲成形;在一定范围内,较大弯曲半径更有利于换热器的弯曲成形。
Based on the principle of in-plane rotary drawing bending process,the relationship between the bending moment and the number of layer of heat exchanger,so as the deformation of fin were investigated through experiment.Based on the software LS-DYNA,a finite element model of rotary drawing bending process of multi-layer heat exchanger was established.The reliability of the model was validated by comparing the simulation results with the experimental results.With the verified FE model,effects of the shape of the fin and the bending radius on the forming quality of heat exchanger were revealed.The results show that with the increase of layer number of heat exchanger,the needed bending moment increases linearly,the triangular fin is more suitable for the bending of aluminum micro-channel parallel flow heat exchanger,and furthermore,larger bending radius is more favorable for the rotary bending of heat exchanger.
出处
《塑性工程学报》
CAS
CSCD
北大核心
2011年第4期106-111,共6页
Journal of Plasticity Engineering
基金
上海市科委资助项目(09JC1407000
10QH1401400)
关键词
微细通道平行流式换热器
弯曲力矩
翅片形状
弯曲半径
有限元法
micro-channel parallel flow heat exchanger
bending moment
fin shapes
bending radius
finite element method
