Development of a comprehensive process model for accurate prediction of quench induced distortion in a large size aircraft landing gear
Development of a comprehensive process model for accurate prediction of quench induced distortion in a large size aircraft landing gear
批准号:
536717-2018
负责人:
Jahazi, Mohammad
金额:
$8.51万
依托单位国家:
加拿大
项目类别:
Collaborative Research and Development Grants
财政年份:
2021
资助国家:
加拿大
项目状态:
已结题
起止时间:
2021-01-01 至 2022-12-31
中文摘要
起落架的制造需要特别注意,因为它是飞机上最机械的部件,具有非常严格的几何公差。SAFRAN着陆系统公司是着陆系统领域的全球领导者,该公司希望提高其生产效率,以提高竞争力。制造由高强度钢制成的起落架的过程包括许多加工步骤,以使产品具有所需的几何形状和热处理以达到所需的机械性能。然而,热处理过程伴随着几何形状的变化,可能导致零件不符合要求,从而导致昂贵的让步过程,有时以零件报废告终。为了避免这种情况,需要一个预测模型来量化这种变化。通过试错来改进是非常昂贵且不可行的。使用数值模拟是一个有趣的选择;然而,热处理过程涉及不同物理领域如热、冶金和力学领域的相互作用,使问题非常复杂。由于物理模型过于简化,现有的仿真模型无法提供所需的精度。因此,该项目旨在加深对热处理过程中涉及的热-金属-机械相互作用的了解,最终建立更强大的预测模型。# (cr) #(低频)La制造一个火车d 'atterrissage活动des关注particulieres le composant勒汽车celui-ci est + sollicite mecaniquement d一个军用飞机用des公差在非常serre。赛峰起落架系统公司是全球领先的航空运输系统公司,负责管理航空运输系统的管理,管理航空运输系统的生产管理,管理航空运输系统的生产管理。Le突起de制造一个火车d 'atterrissage,既acier高级阻力,inclut des兵站d 'usinage倒唐纳la geometrie等联合国traitement thermique倒offrir les proprietes机械的欲望。独立的,处理热特性是伴随的,不符合的,处理热特性是不符合的,处理热特性是不符合的,处理热特性是不符合的,处理热特性是不符合的。在3种不同的方法中,3种不同的方法分别是:1种不同的方法:1种不同的方法:1种不同的方法:1种不同的方法。我的职业生涯经历了一段艰难的时期,但我认为这是不可行的。利用模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟,模拟模拟。模拟的模态是存在的,模拟的模态是不存在的,模拟的模态是不存在的,模拟的模态是不存在的。事实上,项目本身就是一个目标,一个目标,一个目标,一个目标,一个目标,一个目标,一个目标,一个目标,一个目标,一个目标,一个目标,一个目标,一个目标
英文摘要
The manufacture of a landing gear requires special attention because it is the most mechanically solicited component of an aircraft with very tight geometric tolerances. SAFRAN Landing Systems, a world leader in landing systems, wants to increase its productivity in order to be more competitive. The process of manufacturing a landing gear made of high strength steel includes many machining steps to give the produce the desired geometry and a heat treatment to attain the required mechanical properties. However, the heat treatment process is accompanied by a change in geometry leading to possible part non-conformance thus resulting in an expensive concessions process sometimes ending with part rejection. To avoid this, a predictive model is needed to quantify this change. Improvement by trial and error is very expensive and non-viable. The use of numerical simulation is an interesting choice; however, the heat treatment process involves interactions of different physical domains such as the thermal, metallurgical and mechanical domains, making the problem very complex. Existing simulation models are unable to provide the required accuracy due to over-simplification of the physical models. As a result, the project will aim to deepen knowledge about the thermo-metallo-mechanical interactions involved in the heat treatment process to eventually have a more robust predictive model.#(cr)#(lf)La fabrication d'un train d'atterrissage nécessite des attentions particulières car celui-ci est le composant le plus sollicité mécaniquement d'un avion avec des tolérances géométriques très serrées. SAFRAN Landing Systems, un leader mondial dans les systèmes d'atterrissage, désire augmenter sa productivité afin d'être plus compétitif. Le processus de fabrication d'un train d'atterrissage, fait en acier à haute résistance, inclut des étapes d'usinage pour donner la géométrie et un traitement thermique pour offrir les propriétés mécaniques désirées. Cependant, le traitement thermique s'accompagne d'un changement de géométrie pouvant rendre la pièce non-conforme, ce qui enclenche un processus coûteux de concession qui peut pour parfois finir par un rejet du composant. Afin d'éviter cela, un modèle prédictif est nécessaire permettant de quantifier la déformation qui résulte du traitement thermique. L'amélioration par essais et erreurs est très couteuse et non viable. L'utilisation de la simulation numérique est un choix intéressant, par contre, le traitement thermique implique des interactions de différents domaines physiques : la thermique, la métallurgie et la mécanique, rendant le problème très complexe. Les modèles existants de simulation sont incapables de fournir la précision requise dû à sur-simplification mathématique des modèles physiques. De ce fait, le projet aura pour objectif d'approfondir les connaissances sur les interactions thermo-métallo-mécaniques pour éventuellement avoir un modèle prédictif plus robuste.
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会议论文
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Development of a comprehensive process model for accurate prediction of quench induced distortion in a large size aircraft landing gear
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资助金额:$2.84万
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