Analysis of local loading forming for titanium-alloy T-shaped components using slab method
Analysis of local loading forming for titanium-alloy T-shaped components using slab method
复制标题
钛合金T形件板坯法局部加载成形分析
DOI：
10.1016/j.jmatprotec.2009.09.008
复制
发表时间：
2010-01
期刊：
影响因子：
5
通讯作者：
Yang, H.
中科院分区：
文献类型：
--
作者：
Sun, Z.C.;Zhang, D.W.;Yang, H.
大型肋腹板构件可认为是多个T形构件的组合，能够反映大型肋腹板构件局部加载的成形特性。因此探索T型构件局部加载成形的材料流动和填充规律对于腹板构件局部加载成形过程的参数优化和过程控制具有重要意义。本文借助合理的假设和简化，采用板坯法（SM）对局部载荷下钛合金T形件的等温成形过程进行分析。分析了局部加载成形过程和材料变形特征，通过物理实验发现了局部加载下的两种变形模式。采用平板法建立了加载过程中加载力、肋高（型腔填充深度）和中性层位置的数学模型。在MATLAB环境下开发模型计算程序，预测加载力、肋高和中性层位置。 SM结果与实验和FEM结果的比较表明，基于板法建立的模型是可靠的。利用数学模型确定的冲头宽度、坯料厚度、压下量等合理参数，可为大型筋腹板构件局部加载成形分析提供依据。
A large-scale rib-web component may be considered as a combination of many T-shaped components which can reflect forming characteristics of large-scale rib-web components by local loading. So exploring the material flow and filling law of the T-shaped components local loading forming is important for parameter optimization and process control of local loading forming processes of rib-web components. With the help of reasonable assumptions and simplifications, the slab method (SM) is used to analyze the isothermal forming process of titanium-alloy T-shaped components under local loading in this paper. The process of local loading forming and the characteristics of material deformation are analyzed, and two deformation patterns under local loading are found by using the physical experiment. Mathematical models of loading force, rib height (depth of cavity filling) and the position of neutral layer in loading process are established by using the slab method. Calculation-program for models is developed under MATLAB environment, and then the loading force, rib height and position of neutral layer are predicted. The comparison of the SM results with the experimental and FEM results indicates that the models established based on the slab method are reliable. The reasonable parameters determined by using the mathematical models, such as the width of punch, the thickness of billet, the reduction amount etc., may provide a basis for analysis of local loading forming for large-scale rib-web components.
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DOI：
10.1007/s001700200134
发表时间：
2002-07
期刊：
The International Journal of Advanced Manufacturing Technology
影响因子：
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作者：
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影响因子：
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DOI：
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发表时间：
1971-05
期刊：
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影响因子：
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通讯作者：
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影响因子：
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