Model Order Reduction for Elastic Multibody System with Moving Interactions

弹性多体系统（EMBS）中运动载荷和接触问题是弹性体模型降阶及其在EMBS仿真中的应用所必须注意的问题。在项目的第一部分“Modellreduktion bei elastischen Mehrkörpersystemen mit wandernden interaktionsstelen”中，介绍和研究了两种模拟弹性体上移动载荷的方法。将这些方法推广到同时影响大面积的移动面荷载是非常困难的，应在项目的第二部分进行研究。因此，对于弹性多体系统，应采用额外的参数模型约简方法，并对时变输入矩阵的近似进行扩展。除此之外，第三种方法，包含动力系统的系统切换，应该在机械系统中启用，并应用于EMBS仿真中的移动面载荷。所有方法都将在不同复杂程度的机械系统中实施和研究，以预测这些方法在模拟具有移动面载荷的弹性多体系统中的适用性。

Moving loads and contact in elastic multibody systems (EMBS) require high care and attention in model order reduction (MOR) of elastic bodies as well as its application in simulations of EMBS. In the first part of the project "Modellreduktion bei elastischen Mehrkörpersystemen mit wandernden Interaktionsstellen" two approaches to model moving loads on elastic bodies were introduced and investigated. The extension of these methods for moving areal loads which affect large areas simultaneously is very difficult and should be investigated in the second part of the project. Therefore, additional parametric model reduction methods should be applied for elastic multibody systems and the extension of the approximation of time-dependent input matrices will be developed. Apart from this, a third approach, which contains the system switching of dynamical systems, should be enabled for mechanical systems and applied for moving areal loads in EMBS simulations. All methods will be implemented and investigated for mechanical systems of different complexity to enable a prediction about the applicability of these methods to simulate elastic multibody systems with moving areal loads.