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Abstract：
This article raises the topic of the critical examination of polypropylene, a key polymeric material, and its extensive application within the automotive industry, particularly focusing on the manufacturing of brake fluid reservoirs. This study aims to enhance the understanding of polypropylene\'s behavior under mechanical stresses through a series of laboratory destruction tests and numerical simulations, emphasizing the finite element method (FEM). A novel aspect of this research is the introduction of the PEAK parameter, a groundbreaking approach designed to assess the material\'s resilience against varying states of strain, known as triaxiality. This parameter facilitates the identification of critical areas prone to crack initiation, thereby enabling the optimization of component design with a minimized safety margin, which is crucial for cost-effective production. The methodology involves conducting burst tests to locate crack initiation sites, followed by FEM simulations to determine the PEAK threshold value for the Sabic 83MF10 polypropylene material. The study successfully validates the predictive capability of the PEAK parameter, demonstrating a high correlation between simulated results and actual laboratory tests. This validation underscores the potential of the PEAK parameter as a predictive tool for enhancing the reliability and safety of polypropylene automotive components. The research presented in this article contributes significantly to the field of material science and engineering by providing a deeper insight into the mechanical behavior of polypropylene and introducing an effective tool for predicting crack initiation in automotive components. The findings hold promise for advancing the design and manufacturing processes in the automotive industry, with potential applications extending to other sectors.
摘要：
本文提出了聚丙烯的严格审查的话题，一种关键的聚合物材料，及其在汽车工业中的广泛应用，特别是专注于制动液油箱的制造。本研究旨在通过一系列的实验室破坏试验和数值模拟来增强对聚丙烯在机械应力下的行为的理解,强调有限元方法(FEM)。这项研究的一个新颖方面是引入了PEAK参数，一种开创性的方法，旨在评估材料对不同应变状态的弹性，被称为三轴性。此参数有助于识别容易产生裂纹的关键区域，从而能够以最小的安全裕度优化组件设计，这对于具有成本效益的生产至关重要。该方法涉及进行爆裂测试以定位裂纹萌生部位，然后进行FEM模拟，以确定Sabic83MF10聚丙烯材料的峰值阈值。该研究成功验证了PEAK参数的预测能力，证明了模拟结果和实际实验室测试之间的高度相关性。该验证强调了PEAK参数作为提高聚丙烯汽车部件可靠性和安全性的预测工具的潜力。本文提出的研究通过对聚丙烯的力学行为提供更深入的了解，并引入一种有效的工具来预测汽车部件的裂纹萌生，从而为材料科学和工程领域做出了重大贡献。这些发现有望推进汽车行业的设计和制造流程，潜在的应用扩展到其他部门。
