热冲压模具随形冷却水道优化设计  

Optimal design of hot stamping tools with conformal cooling channels

作　　者：贺斌[1] 李显达[1] 盈亮[1] 胡平[1] 张向奎[1] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室,辽宁大连116024

出　　处：《吉林大学学报（工学版）》2016年第6期1974-1980,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金重点项目(11272075);中国博士后科学基金项目(2014M561223);中央高校基本科研业务费专项资金项目(DUT14ZD224)

摘　　要：为了提高热冲压模具冷却均匀性,提出对热冲压模具水道进行随形设计优化。利用Abaqus对保压淬火过程中模面温度场进行有限元分析,总结水道设计缺陷对模面温度分布的不良影响。利用I-sight,以水道中心在偏置线上的比率、水道半径和水道中心与模面的距离为优化变量,以模面最高温度、平均温度和温度均匀性为优化目标,优化后模面最高温度下降52.6%,平均温度下降36.8%,温度均匀性提高86.6%,冷却效率显著提高。同时热流加载和板料温度加载模拟优化前后的结果对比一致,证明热流加载代替板料温度加载进行优化分析可行。The temperature uniformity of hot-stamping tool with conformal cooling channel was optimized integrally based on single-objective optimization. An optimal design of hot-stamping tool with conformal cooling channel was presented on the basis of heat flux boundary. The ratio of channel center point on the offset contour lines, the radius and the distance between channel center and tool surface are set as the optimal variables. The temperature uniformity of the tool surface is given as optimization objective. Combing with the pointer optimizer, the optimization of the shape and position parameters of the hot-stamping tool with conformal channels was carried out. The maximum temperature, the average temperature and the temperature uniformity were improved by the optimization. Moreover, the cooling performances of the tool before and after optimization by applying heat flux boundary or temperature boundary present the same trend. It is proved that the simulation approach with direct heat flux boundary is reliable and effective.

关 键 词：材料合成与加工工艺 热冲压模具 随形水道 温度均匀性 单目标优化 

分 类 号：TB31[一般工业技术—材料科学与工程]