| 基于质量阵Cholesky分解的发动机悬置系统优化 |
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| 引用本文： | 郝慧荣,张慧杰.基于质量阵Cholesky分解的发动机悬置系统优化[J].计算力学学报,2018,35(3):372-379. |
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| 作者姓名： | 郝慧荣 张慧杰 |
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| 作者单位： | 内蒙古工业大学 能源与动力工程学院, 呼和浩特 010051,内蒙古工业大学 能源与动力工程学院, 呼和浩特 010051 |
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| 基金项目： | 内蒙古工业大学校基金（X201707）资助项目. |
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| 摘 要： | 根据拉格朗日方程，建立发动机悬置系统的动力学模型；基于广义坐标下质量矩阵的Cholesky分解，设计正则模态矩阵；结合悬置系统的能量分布矩阵和工程约束条件，在最小二乘原则下，对支撑参数进行优化求解；在发动机的振动激励源分析的基础上，通过对悬置系统进行动力学仿真，证明了基于质量阵Cholesky分解的发动机悬置系统优化方法的可行性及有效性。
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| 关 键 词： | 发动机 悬置系统 动力学仿真 优化设计 Cholesky分解 |
| 收稿时间： | 2017/3/6 0:00:00 |
| 修稿时间： | 2017/7/2 0:00:00 |
Optimization of engine mount system based on Cholesky factorization of mass matrix |
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| HAO Hui-rong,ZHANG Hui-jie.Optimization of engine mount system based on Cholesky factorization of mass matrix[J].Chinese Journal of Computational Mechanics,2018,35(3):372-379. |
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| Authors: | HAO Hui-rong ZHANG Hui-jie |
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| Institution: | School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, China and School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, China |
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| Abstract: | From the Lagrange''s equation, the dynamic model of the mounting system of an engine is established.The Cholesky factorization of the mass matrix is made on the generalized coordinates.Based on the energy distribution matrix and engineering constraints, the support parameters are optimized and solved by the principle of least squares.The feasibility and effectiveness of the optimization method are proved by the result of dynamic simulation, through the vibration excitation source analysis of the engine. |
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| Keywords: | engine mount system dynamic simulation optimization design Cholesky decomposition |
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