Optimization of the Compression (Injection/Compression) Molding Process Using Numerical Simulation
Optimization of the Compression (Injection/Compression) Molding Process Using Numerical Simulation
复制标题
使用数值模拟优化压缩（注射/压缩）成型工艺
DOI：
10.1115/imece1997-0624
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
T. Osswald
中科院分区：
文献类型：
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作者：
B. Davis;R. P. Theriault;T. Osswald
汽车制造商对降低乘用车成本和重量以及满足越来越严格的政府法规的要求越来越高，这使得纤维增强塑料的使用非常有吸引力。特别是，热固性复合材料的使用，如SMC和BMC，多年来一直被主要的汽车制造商用来生产高质量、坚固、刚性和轻质的车身面板。它越来越多地用于整个车辆的更多结构部件。然而，纤维填充的热固性复合材料的使用不限于汽车工业。它还广泛用于电子元件，运动器材和一般消费品。因此，需要能够设计这些模制部件并预测制造和使用期间的复杂行为，这对于减少从概念到生产的时间至关重要。
本文介绍了一种基于有限元的模拟程序，允许整个成型过程，包括模具填充，纤维取向，传热，固化，残余应力和翘曲，在计算机上模拟，而不是通过实验原型。该软件允许设计师和工程师在需要制造模具之前的设计阶段确定产品性能。然后，通过用计算机修改设计和工艺，可以在构建模具之前完成零件优化。
本文讨论了模型和方法实现的模拟程序沿着以及伴随的假设。模拟的结果与实验结果进行了比较，为各种零件。然后，本文重点介绍了一个注射/压缩成型部件的案例研究，展示了如何模拟可以用作设计优化工具。
The increasing requirements on auto makers to reduce both the cost and weight of passenger vehicles as well as meet ever more restrictive government regulations make the use of fiber reinforced plastics very attractive. In particular, the use of thermoset composites, such as SMC and BMC, have been used for years by the major auto makers to produce high quality, strong, stiff, and lightweight body panels. Increasingly, it is being used for more structural components throughout the vehicle. However, the use of fiber filled thermoset composites is not limited to the automotive industry. It is also extensively used in electronic components, sports equipment, and general consumer goods. Accordingly, the need to be able to design these molded parts and to predict the complex behavior during manufacture and in service is paramount to reducing the time from concept to production.
This paper introduces a finite element based simulation program that allows the entire molding process, including mold filling, fiber orientation, heat transfer, cure, residual stress and warpage, to be simulated on the computer rather than by experimental prototyping. The software allows designers and engineers to determine product performance during the design stage before the tooling needs to be manufactured. Then, by modifying the design and process with the computer, part optimization can be accomplished prior to building the mold.
The paper discusses the models and methods implemented by the simulation program along with the accompanying assumptions. The results of the simulation are compared with experimental results for a variety of parts. This paper then highlights a case study of an injection/compression molded component showing how the simulation can be used as a design optimization tool.