| 基于功率谱密度的结构随机疲劳寿命仿真 |
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| 引用本文： | 顾超林,王轲. 基于功率谱密度的结构随机疲劳寿命仿真[J]. 计算机与现代化, 2010, 0(2): 143-146. DOI: 10.3969/j.issn.1006-2475.2010.02.040 |
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| 作者姓名： | 顾超林 王轲 |
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| 作者单位： | 南京航空航天大学振动工程研究所,飞行器结构力学与控制教育部重点实验室,江苏,南京,210016 |
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| 摘 要： | 利用MSC．Patran、MSC．Nastran、MSC．Fatigue软件，通过对某设备的弹簧片结构进行强度和疲劳寿命分析，详细地探讨随机振动疲劳仿真分析技术的流程及实现过程：即首先对结构进行频率响应计算，得到弹簧片的传递函数，再将此传递函数与输入的功率谱相乘．获得弹簧片的应力功率谱密度，再结合材料参数，选择合适的疲劳损伤模型，利用频域方法计算结构的疲劳寿命。通过对真实结构进行的随机疲劳试验证明仿真所得结果与试验结果处于同一量级，仿真的结果真实可靠。
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| 关 键 词： | 有限元分析 弹簧片结构 随机振动 仿真 |
Structure Random Fatigue Life Simulation Based on Power Spectral Density |
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| GU Chao-lin,WANG Ke. Structure Random Fatigue Life Simulation Based on Power Spectral Density[J]. Computer and Modernization, 2010, 0(2): 143-146. DOI: 10.3969/j.issn.1006-2475.2010.02.040 |
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| Authors: | GU Chao-lin WANG Ke |
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| Affiliation: | Institute of Vibration Engineering/a>;Nanjing University of Aeronautics & Astronautics/a>;Key Laboratory of Vehicle Structural Mechanics and Control/a>;Ministry of Education/a>;Nanjing 210016/a>;China |
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| Abstract: | The MSC.softwares,such as MSC.Patran,MSC.Nastran,MSC.Fatigue are used in the strength and fatigue life analysis of a leaf spring structure of a certain device.The process simulation and realization of the process random vibration fatigue analysis are studied in detail:That is,first of all,calculating the frequency response of the structure to obtain the transfer function,then multipling this transfer function with the input of the power spectrum to obtain the power spectral density of stress of the leaf-spr... |
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| Keywords: | finite element analysis leaf-spring structure random vibration simulation |
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