强张力减径过程混合加载模型及产品质量预报  

The Mix-Loaded Model and Product Quality Prediction in the Process of Tube Tension-Reducing

作　　者：杜凤山[1] 于辉[1] 臧新良[1] 

机构地区：[1]燕山大学机械工程学院,秦皇岛066004

出　　处：《燕山大学学报》2000年第4期302-308,共7页Journal of Yanshan University

基　　金：河北省自然科学基金

摘　　要：采用三维弹塑性大变形有限元法进行单组元建模，考虑金属的复杂性和影响金属流动的关键因素，如孔型形状及配置、张力作用等，通过张力、位移混合加载，建立耦合计算连轧模型，研究在张力减径过程中钢管变形机制，分析在不同情况下钢管的壁厚变化规律，并与实验结果的对比分析，验证模型的可靠性，为对张城机进行全面检测、挖掘设备潜力和开发新产品等工艺理论研究提供了依据。The thesis applied 3-D elastic-plastic finite elementmethod to establish single-series element model, consideredthe main facts that influence metal-flow such as configure pat-tem of roll pass, tension action etc. and continous roll modelfor coupling calculation is established by the tension and dis-placement mis-loaded. The distribution of tube wall changeunder different conditions has been analyzed. The reliabilityof model has been verified by contrast of calculation resultsand experiment results, which provided foundation for techni-dal theory study including whole inspect of tension reducing,mills, exploring equipment potential, developing new productand so on.

关 键 词：弹塑性有限元 张力减径 混合加载 张力分布 

分 类 号：TG333.8[金属学及工艺—金属压力加工] TG335.71