Model order reduction for moving objects: fast simulation of vibration energy harvesters
Model order reduction for moving objects: fast simulation of vibration energy harvesters
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DOI：
10.1108/compel-02-2015-0043
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发表时间：
2015-09
影响因子：
0.7
通讯作者：
Takahiro Sato;Yuki Sato;H. Igarashi
中科院分区：
文献类型：
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作者：
Takahiro Sato;Yuki Sato;H. Igarashi
目的：三维模型的有限元方法需要大量的计算成本。为了在设计中充分利用动态系统的仿真，必须降低运动物体（如振动能量采集器）有限元分析的计算量。本文旨在探讨这些问题。设计/方法/途径为减少有限元计算时间，提出了基于适当正交分解的模型降阶方法。对于移动系统，MOR进行了修改。研究结果表明，提出的MOR可以大大减少能量采集器的耦合分析，其中运动方程、静磁方程和电路需要反复求解。独创性/价值-为了减少有限元的计算时间，提出了将整个域细分为n个块的block-MOR方法。这样可以降低MOR的计算成本。
Purpose – The finite element method (FEM) for 3D models needs heavy computational cost. The computational cost for FE analysis of moving objects, e.g. Vibration energy harvester, must be reduced to exploit the simulation of the dynamic system in its design. The paper aims to discuss these issues. Design/methodology/approach – To reduce the computational time of FEM, the model order reduction (MOR) based on proper orthogonal decomposition has been proposed. For the moving systems, MOR is modified. Findings – It is shown that proposed MOR makes it possible to drastically reduce the coupling analysis of the energy harvester in which the equations of motion, magnetostatics, and circuit are repeatedly solved. Originality/value – To reduce the computational time of FEM, block-MOR is presented, in which the whole domain is subdivided into N-blocks. As a result computational cost for MOR can be reduced.