Single-stage gas gun

单级气枪

• 批准号: 537373841
• 金额: --
• 依托单位: Technische Universität Braunschweig
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2024
• 资助国家: 德国
• 起止时间: 2023-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/537373841?language=en
• 关键词: Single; stage; gas; gun

This proposal is for a single-stage compressed gas gun to carry out high-velocity impact (HVI) tests on lightweight structures made of metallic or fibre-reinforced materials in order to understand and simulate damage mechanisms and to be able to evaluate new structural concepts with regard to their damage resistance or energy absorption capability. Such HVI load cases play a major role in aircraft construction and other technical disciplines because they often represent the dimensioning load cases for a large number of structural components for safety reasons. Examples include bird strike, hailstorm, impact from tyre or rim fragments, etc. In the research of new, more sustainable or lighter aircraft designs, the experimental and numerical consideration of HVI loads is of paramount importance. Such a gas gun is based on the principle of the abrupt expansion of a compressed gas from a pressure vessel, which accelerates a projectile embedded in a sabot along a long tube to shoot it at a fixed sample or structural component. The impact of the projectile on the test structure and the structural response are evaluated qualitatively and quantitatively on the one hand by means of high-speed cameras as well as optical 3D strain field measurement via Aramis sensor, and on the other hand by means of strain gauges, force sensors or acceleration sensors, for which a high-speed data recorder with a sufficiently high number of measuring channels is required. In the field of aeronautical research, larger projectiles are particularly relevant, i.e. bird subsitute projectiles made of gelatine, tyre parts, wheel rim parts, drone components, etc. Therefore, we are applying for a gas gun with a sufficiently large tube diameter (220 mm) for projectile masses in the range of 900-3,600 g at impact velocities of about 100-250 m/s. The goals of the research associated with this large-scale research facility as part of Prof. Heimbs' new appointment at TU Braunschweig include the investigation of the highly dynamic material and damage behaviour of lightweight structural materials incl. the development of more resistant materials, the research of impact protection systems (for the safety of structures, tanks, passengers), the research of novel impact load cases such as drone collision, the research of simplified, standardised substitute projectiles, the improvement and validation of numerical simulation methods, the experimental demonstration of the impact resistance of large-scale demonstrators or prototypes desired in many research projects, the development of industry-specific guidelines, standards and requirements, as well as the utilisation and transfer of HVI research findings from aeronautics research to the fields of automotive engineering, rail transport or wind turbines.

该建议是为单阶段的压缩气枪进行高速影响（HVI）测试，以对由金属或纤维增强的材料制成的轻质结构进行测试，以便理解和模拟损伤机制，并能够评估其对其损害抵抗或吸收能力的新结构概念。这样的HVI负载案件在飞机建设和其他技术学科中起着重要作用，因为出于安全原因，它们通常代表大量结构组件的尺寸负载案例。例子包括鸟罢工，冰雹，轮胎或轮辋碎片的影响等。在研究新的，更可持续或较轻的飞机设计时，对HVI负载的实验和数值考虑至关重要。这样的气枪基于压力容器突然扩展压缩气体的原理，该原理沿着长管加速了弹丸嵌入在SABOT中的弹丸，以将其在固定的样品或结构成分上射击。弹丸对测试结构和结构响应的影响一方面通过高速相机以及通过Aramis传感器进行的光学3D应变场测量进行定性和定量评估，另一方面是通过应变仪，力量传感器或加速器或加速度的高速数据录像器，具有高速数据录像器的高速频道，这是一定的高度频道。在航空研究领域，较大的弹丸特别相关，即由明胶，轮胎零件，车轮边缘零件，无人机组件等制成的鸟类亚弹丸。因此，我们正在申请一支具有足够大的管直径（220 mm）的气枪，用于900-3,600 g处的范围内的弹丸质量，均为100-250 rage fact velocies fars/s/s/s/s/s/s。作为Heimbs教授在Tu Braunschweig的新任命的一部分，与此大规模研究设施相关的研究的目标包括对轻型结构材料的高度动态材料和损害行为的调查。 the development of more resistant materials, the research of impact protection systems (for the safety of structures, tanks, passengers), the research of novel impact load cases such as drone collision, the research of simplified, standardised substitute projectiles, the improvement and validation of numerical simulation methods, the experimental demonstration of the impact resistance of large-scale demonstrators or prototypes desired in many research projects, the development of industry-specific guidelines, standards and requirements, as以及HVI研究结果从航空研究的利用和转移到汽车工程，铁路运输或风力涡轮机领域。