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首页> 外文期刊>Aerospace science and technology >Gear walk instability studies using flexible multibody dynamics simulation methods in SIMPACK
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Gear walk instability studies using flexible multibody dynamics simulation methods in SIMPACK

机译：使用SIMPACK中的灵活多体动力学仿真方法进行齿轮行走不稳定性研究

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In a variety of mechanical systems friction induced vibrations are a major concern. The aircraft landing gear is by nature a complex multidegree-of-freedom dynamic system. It may encounter various vibration modes which can be induced by brake frictional characteristics and design features. These brake induced oscillations can lead to very high loads in the landing gear and brake structure which may result in passenger discomfort and sometimes in component failure. Along with the serious fore and aft oscillations of a landing gear, often referred to as gear walk, chatter, squeal, shimmy and other vibrations in aircraft landing systems are not only annoying and disconcerting but can also affect the stability of the plane during take-off, landing, and rolling. In this paper, simulation of such an unstable and complex phenomenon during aircraft ground maneuvers is done to detect vibrations in aircraft landing gear. A commercial multibody simulation tool SIMPACK is used for this purpose. The article is based on work done in co-operation between DLR and Liebherr Aerospace.
机译：在各种机械系统中，摩擦引起的振动是主要关注的问题。飞机起落架本质上是一个复杂的多自由度动态系统。它可能会遇到各种振动模式，这些振动模式可能是由制动摩擦特性和设计特征引起的。这些由制动引起的振荡会导致起落架和制动结构中的负载过高，从而可能导致乘客不适，有时还会导致部件故障。飞机起落系统中起落架的剧烈前后振动（通常称为起步，震颤，尖叫，颤动和其他振动）不仅令人烦恼和不安，而且还会在起飞过程中影响飞机的稳定性。起飞，降落和滚动。在本文中，对飞机地面操纵过程中的这种不稳定而复杂的现象进行了仿真，以检测飞机起落架中的振动。为此，使用了商用多体仿真工具SIMPACK。本文基于DLR与利勃海尔航空航天公司之间的合作完成。

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