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Optimization of Dynamic Mechanical Systems Using CAE for Beginners
This presentation about mechanical system optimization will introduce several simple but practical examples such as construction equipment (a wheel loader), deployment of a solar array for a satellite, two-wheeled vehicle dynamics while in operation, a hand press and connecting rod including a flexible body.
All of these dynamic mechanical system models will be optimized using multi-body dynamics simulation software that is based on the progressive meta-model method. (RecurDyn/AutoDesign)
Index of the webinar
00:24 1. Overview of Optimization
07:54 2. Formulation/Modeling of the optimization problem
11:42 3. RecurDyn/AutoDesign
20:22 4. Practices to select the design variables and objective functions (mechanical system optimization)
- 20:39 #1 Optimization of Truss Bridge
- 25:26 #2 Optimization of Wheel Loader
- 28:36 #3 Optimization of Satellite
- 32:13 #4 Optimization of Hand press (Puncher)
- 34:21 #5 Two-wheeled vehicle
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36:29 #6 Connecting Rod (MFBD: FE-MBD Coupling)
Please note that the mechanical system examples introduced here are dynamic mechanisms and that the transient behavior of the multibody system is optimized. This method optimizes the transient multibody system with a minimum number of trials.
The major topic of this presentation is to introduce best practices for deciding the design variables and the objective functions of a mechanical system for optimization.
Each example has a different optimization goal for various dynamic mechanical systems; for instance, to minimize the fatigue of the operator who use the hand press or to maximize the safety of the wheel loader. To achieve these goals, appropriate inputs are set to the design variables and the objective functions to be optimized are defined. Then the optimization method is applied to the multibody simulation of these examples and the optimized results will be illustrated.
The purpose of this presentation is that anyone can do optimization of dynamic mechanical system using CAE without having a deep knowledge about optimization. These examples demonstrate the need for optimization of mechanical systems and provide the ideas and insights about how to optimize practical mechanisms.
