Development and validation of a CAE chain for unidirectional fibre reinforced composite components
Development and validation of a CAE chain for unidirectional fibre reinforced composite components
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DOI：
10.1016/j.compstruct.2015.05.047
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发表时间：
2015-11-15
影响因子：
6.3
通讯作者：
Henning, Frank
中科院分区：
文献类型：
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作者：
Kaerger, Luise;Bernath, Alexander;Henning, Frank
目前采用树脂传递模塑（RTM）制造的复合材料部件的开发需要大量的人工迭代步骤来找到与最佳工艺控制相结合的最佳设计。尽管如此，由于真实的材料行为受到加工历史的影响，并且无法通过模拟充分预测，因此此类组件通常非常超大。悬垂过程是纤维排列的主导过程，导致纤维取向和局部悬垂效果的变化。这些材料特性影响着成型过程和力学性能，需要在RTM结构的尺寸确定和虚拟验证中加以考虑。因此，在这项工作中开发了一个连续的虚拟过程链（CAE链），其中几何和材料数据通过使用中立的交换格式和映射算法在有限元模型之间传输。以一个复杂曲面RTM零件为例，对CAE链进行了应用和验证。为了演示CAE链的好处，使用了一个参考模型，其中纤维方向被简单地投射到组件的表面。为了进行实验验证，将模拟结果与成型模拟中的压力和温度测量结果以及结构模拟中的拉力和弯曲测试结果进行了比较。(C) 2015 Elsevier Ltd.版权所有。
Current development of composite components made by Resin Transfer Moulding (RTM) requires numerous manual iteration steps to find the optimal design in conjunction with optimal process control. Still, such components are often highly oversized since the real material behaviour is influenced by the processing history and cannot be sufficiently predicted by simulations. The draping process is the predominating process for the fibre alignments, resulting in varying fibre orientations and local draping effects. These material characteristics influence the-moulding process as-well as the mechanical performance and need to be considered for sizing and virtual validation of RTM structures. Therefore, a continuous virtual process chain (CAE chain) is developed in this work, where geometry and material data are transferred between the finite element models by using a neutral exchange format and mapping algorithms. The CAE chain is applied and validated by a complexly curved RTM part. To demonstrate the benefit of the CAE chain, a reference model is used, where the fibre orientations are simply projected to the component's surface. For experimental validation, the simulation results are compared to pressure and temperature measurements in the case of moulding simulation, and to tension and bending tests in the case of structural simulation. (C) 2015 Elsevier Ltd. All rights reserved.