锻压技术

船用中厚板热-外力辅助成形实验研究

英文标题：Experimental investigation on assisted forming with thermal and external force coupling for ship plate

作者：王智祥王帅杨敬东

关键词：热应力外载荷大变形位移模型

分类号：thermal stress; external-loading; large deformatio

出版年,卷(期):页码：2016,41(5):131-135

摘要：

为解决船用中厚板难于成形的问题，采用热应力和外载荷辅助作用的方式提高成形效果，通过实验研究了板材表面温度场的分布与加热功率和时间的关系。研究结果表明：试验温度为300~350 ℃、加热时间为12~16 s时的成形效果显著。采用数据拟合方法分析了弯曲角度、曲率半径与温度和弯矩之间的关系，推导了位移与曲率半径之间的关系，并建立了相关的数学模型。同时，基于建立的位移与曲率半径的数学模型，通过MATLAB曲面拟合工具模拟了中厚板位移变形，模拟结果与实验结果基本吻合。

To solve the difficulty in forming the ship plate, the plate forming effect was improved by coupling thermal stress with external load, and the relationships between the distribution of temperature field with the heating power and heating time were studied by experiment. The research results show that the forming effect is remarkable at the temperature of 300-350 ℃，and the time of 12-16 s. Therefore, the relationships between the bending angle, curvature radius with temperature and moment were analyzed by fitting data. The relationship between displacement and curvature radius was derived and then the relative maths model was set up. At the same time, based on the above mathematical model, the deformation process of the plate was simulated by MATLAB curve surface fitting tool. At last, the simulation results are consistent with the experimental results.

基金项目：

重庆市科学技术委员会重大科技攻关项目（cstc2012gg-yyjsb70002）

王智祥（1955-），男，本科，教授王帅（1987-），男，硕士研究生

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