Abstract It is well known that the mechanical properties of extrusion blow molded plastic bottles are influenced by the process conditions, which leads to local orthotropic process-dependent material parameters. In this study, these parameters as well as local orientation effects are for the first time considered in the structural analysis of extrusion blow molded products. Furthermore, an integrative simulation concept has been worked out which combines process simulation and structural analysis to take the process history of the plastic bottle into account. The elastic modulus is described as a function of process parameters like the local degrees of stretching and the mold temperature. Because the local degrees of stretching differ considerably, a new algorithm was developed which identifies the local degrees of stretching as well as their orientation using the results of the process simulation. For the data mapping between the process mesh and the structural analysis mesh, the self-developed MpCCI Mapper software was used. In a simulation of a top load test, the integrative simulation model was compared with the conventional model as well as with experimental data. Although in this particular case the influence of the orthotropic material model with respect to the local degrees of stretching is rather low, the general use of process dependent material parameters leads to much better results.

中文翻译：

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挤出吹塑塑料瓶的综合模拟概念

摘要 众所周知，挤出吹塑塑料瓶的机械性能受工艺条件的影响，这会导致局部正交各向异性工艺相关的材料参数。在这项研究中，这些参数以及局部取向效应首次在挤出吹塑产品的结构分析中得到考虑。此外，还制定了综合模拟概念，将过程模拟和结构分析相结合，将塑料瓶的过程历史考虑在内。弹性模量被描述为工艺参数的函数，例如局部拉伸度和模具温度。因为局部拉伸程度相差很大，开发了一种新算法，该算法使用过程模拟的结果识别局部拉伸程度及其方向。过程网格和结构分析网格之间的数据映射，使用了自主开发的MpCCI Mapper软件。在顶载试验的模拟中，综合模拟模型与传统模型以及实验数据进行了比较。虽然在这种特殊情况下，正交各向异性材料模型对局部拉伸程度的影响相当低，但一般使用过程相关材料参数会导致更好的结果。在顶载试验的模拟中，综合模拟模型与传统模型以及实验数据进行了比较。虽然在这种特殊情况下，正交各向异性材料模型对局部拉伸程度的影响相当低，但一般使用过程相关材料参数会导致更好的结果。在顶载试验的模拟中，综合模拟模型与传统模型以及实验数据进行了比较。虽然在这种特殊情况下，正交各向异性材料模型对局部拉伸程度的影响相当低，但一般使用过程相关材料参数会导致更好的结果。