A hybrid numerical-experimental methodology for robust assessment of automotive brake system noise

用于稳健评估汽车制动系统噪声的混合数值实验方法

• 批准号: 526364-2018
• 负责人: Atalla, Noureddine
• 金额: $ 4.05万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=697442
• 关键词: hybrid; numerical; experimental; methodology; robust

Brake noise has been an issue for automotive manufacturers for decades and has led to customer perceived quality conditions, which in turn has a cost implication to manufacturers through warranty claims. It is a complex multifaceted problem. Although extensive research on brake noise has been conducted over decades, no comprehensive predictive methodology at the early design stage exists. Rather, a combination of dynamometer testing and finite element modeling techniques are used by the manufacturers to determine factors that may be influential in the aggravation of brake noise. These methods are employed at a stage when the brake system has already been finalized. This has led to noise control methods through complex changes to a combination of variables in an iterative process to reduce or eliminate noise conditions. These countermeasures are very keen to a particular brake system and are not applicable to other brake systems; hence, the process has to be repeated repeatedly for different brake systems resulting in a costly and time-consuming process. With the aim of mitigating this condition before reaching the final design, FCA (Fiat Chrysler Automobiles) is seeking to develop a more robust methodology, which has the ability to provide reliable and repeatable results, based on a better understanding of the sciences behind brake noise. This is the motivation behind this research. Its main objective is to develop a robust predictive tool that allows for a better understanding of the phenomena pertaining to brake noise with an emphasis on squeal noise. The main specification is to improve the correlation between the experimental and the numerical predictions so that the tool can be used at early design phases and processes rather than a diagnostic tool for existing systems. This will be achieved by adding uncertainty and variability in the modeling process with the help of experimental databases obtained with controlled laboratory experiments and dynamometer test rigs. More importantly, the tool will also predict disc brake sound radiation, a task often ignored in current tools and practices. The partner will be provided with an engineering tool together with the relevant methodologies dedicated to their brake noise prediction and design challenges. This knowledge toolbox will allow the partner a better engineering integration of brake system noise all along their products design cycle.

数十年来，制动噪声一直是汽车制造商的问题，并导致了客户感知到的质量条件，这反过来又通过保修索赔对制造商产生了影响。这是一个复杂的多方面问题。尽管数十年来已经对制动噪声进行了广泛的研究，但在早期设计阶段尚无全面的预测方法。相反，制造商使用了测功机测试和有限元建模技术的组合来确定可能在制动噪声加剧中影响的因素。这些方法是在制动系统已经完成的阶段使用的。这通过在迭代过程中的变量组合进行复杂的变化，从而导致噪声控制方法，以减少或消除噪声条件。这些对策非常热衷于特定的制动系统，不适用于其他制动系统。因此，对于不同的制动系统，必须重复重复该过程，从而产生昂贵且耗时的过程。为了在达到最终设计之前减轻这种情况，FCA（Fiat Chrysler Automobiles）正在寻求开发一种更健壮的方法，该方法具有对制动噪声背后的科学的更好理解，能够提供可靠和可重复的结果。 这是这项研究的动机。它的主要目的是开发一种可靠的预测工具，以更好地理解与制动噪声有关的现象，重点是尖叫噪声。 主要规范是改善实验和数值预测之间的相关性，以便可以在早期设计阶段和过程中使用该工具，而不是用于现有系统的诊断工具。这将通过借助受控实验室实验和测功机测试钻机获得的实验数据库来实现建模过程中的不确定性和可变性来实现。更重要的是，该工具还将预测盘式制动声音辐射，这是当前工具和实践中经常忽略的任务。 合作伙伴将配备一种工程工具，以及专门针对其制动噪声预测和设计挑战的相关方法。此知识工具箱将使合作伙伴沿其产品设计周期始终进行制动系统噪声的更好的工程集成。