基于数字孪生的磁流变液延时机构延迟解除隔离时间降阶模型
Magnetorheological Fluid Delay Mechanism Arming Time Reduced-order Model Based on Digital Twin
康岩 1陆静2
作者信息
- 1. 南京理工大学,江苏 南京 210094;机电动态控制重点实验室,陕西 西安 710065
- 2. 南京理工大学,江苏 南京 210094
- 折叠
摘要
为建立满足实时性要求的磁流变液延时机构数字孪生体,针对传统流场仿真计算比较复杂耗时的问题,构建了该机构流体域降阶模型以实现其延时性能的快速计算.利用磁流变液延时机构流体域有限元全阶模型的参数化仿真作为样本数据,在DOE实验设计的基础上采用响应面法完成了流体域降阶模型建立,并结合有限元全阶模型仿真及高速旋转等效试验验证了降阶模型的精度及其可行性.结果表明传统流场与降阶模型仿真结果趋势相同,在检验工况中两者误差在 5%以内,但降阶模型的仿真速度是流场仿真的 100 倍,即降阶模型可以在保证磁流变液延时机构模型求解精度的同时提高求解效率.
Abstract
In order to establish a digital twin of magnetorheological delay mechanism that meets the real-time re-quirements,in view of the complexity and time-consuming problem of traditional flow field simulation calcula-tion,a reduced-order model of the mechanism in fluid field was constructed to realize the rapid prediction of its delay performance.Parametric simulation of full-order finite element model of magnetorheological time-delay mechanism in fluid domain was used as sample data.Based on DOE(design of experiments)experimental de-sign,the response surface method was used to establish the slope model in fluid domain,and the correctness and feasibility of the slope model were verified by the full-order finite element model simulation and high-speed rota-tion equivalent test.The simulation results showed that the traditional flow field and the reduced-order model had the same trend,and the error between them was less than 5%in the inspection condition,but the simulation speed of the reduced-order model was 100 times that of the flow field simulation,the reduced-order model could improve the solution efficiency while ensuring the solution accuracy of the MR delay mechanism model.
关键词
数字孪生/磁流变液延时机构/响应面法/降阶模型Key words
digital twin/MRF delay mechanism/response surface method/reduced order model引用本文复制引用
基金项目
国防科技重点实验室项目(6142601200503)
出版年
2024
NETL
NSTL
维普
万方数据