Strain path dependency in sheet metal : experiments and models
Strain path dependency in sheet metal : experiments and models
复制标题
金属板材中的应变路径依赖性：实验和模型
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
van Maarten Riel
中科院分区：
文献类型：
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作者：
van Maarten Riel
钣金成形工艺用于制造具有高刚度和小重量的产品。为了确定这种生产过程的设置，需要对金属的机械行为和过程本身有基本的了解。随着有限元软件的引入，为降低成本提供了新的机会。有限元法允许使用计算机优化成形过程，而不是在车间进行昂贵的试错过程。在该工具中使用的各种模型中，材料模型用于描述片材的机械行为。有限元软件的预测精度取决于其组件的精度。在这篇论文中，应变路径对力学行为的影响进行了研究。实验被用来改善材料模型，并提高有限元法的整体预测。
Sheet metal forming processes are used to create products that have a high stiffness combined with a small weight. To determine the settings of such a production process, fundamental knowledge of the mechanical behaviour of the metal and of the process itself is required. With the introduction of the finite element software a new opportunity for cost reduction was presented. The finite element method allows for optimisation of forming process with a computer, instead of with a costly trial and error process in the workshop. Amongst the various models that are used in this tool, a material model is used to describe the mechanical behaviour of the sheet. The accuracy of the prediction of the finite element software is determined by the accuracy of its components. In this thesis, the influence of the strain path on the mechanical behaviour is investigated. Experiments are used to improve the material models and to improve the overall predictions of the finite element method.