Research Initiation: Dynamic Analysis of Mechanical Assemblies

机械装配体的运动学和动力学行为的计算机仿真已经成为设计和制造中非常重要的工具。设计师可以在产品实际制造之前预见到产品的性能。目前大多数仿真模块是基于其他运动学或动力学模块的分析，通过指定组件之间的条件，然后在屏幕上显示运动。这种计算机模拟实际上与电影类似，只能提供视觉检查。这种模拟方法的缺点是，设计师被迫使用现有的关节模型，可能会失去他们的创造力。在这个项目中，将开发一个基于特征的原型建模系统，设计师可以用它交互地创建一个机械部件的装配，为动态分析做好准备。零件之间的接触点将被建模为临时关节，其中反作用力将用于确定接触点的状态。还将进行实验分析，以加强和验证分析结果。该项目可以为一般机械系统的真实模拟提供最先进的技术，并作为概念、最终设计和控制算法的经济有效的试验台。

Computer simulation of the kinematic and dynamic behavior of mechanical assemblies has become a very important tool in design and manufacturing. The designer can foresee how a product is going to perform before the product is actually fabricated. The most current simulation modules are based on analysis from other kinematic or dynamic modules by specifying conditions between components and then displaying the motions on a screen. This computer simulation actually performs similarly to a movie and can only provide visual checking. The drawback of this simulation approach is that designers are forced to use the available joint models and may lose their creativity. In this project, a prototype feature-based modeling system will be developed with which a designer can interactively create an assembly of mechanical components ready for dynamic analysis. Contact points between parts will be modeled as temporary joints in which reaction forces will be used to determine the status of the contact points. Experimental analysis will also be conducted to enhance and verify the analytical result. This project can provide a state-of-the-art technology for real simulation of general mechanical systems and act as a cost-effective test bed for concepts, final design and control algorithms.