| 应力松弛试验中初始坡度对非粘滞阻尼模型参数的影响 |
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| 引用本文： | 修国众,时宝,贺英政,王丽英.应力松弛试验中初始坡度对非粘滞阻尼模型参数的影响[J].海军航空工程学院学报,2019,34(5):448-452. |
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| 作者姓名： | 修国众 时宝 贺英政 王丽英 |
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| 作者单位： | 海军航空大学,山东烟台264001;海军航空大学,山东烟台264001;海军航空大学,山东烟台264001;海军航空大学,山东烟台264001 |
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| 摘 要： | 文章将非粘滞阻尼模型的松弛函数分为2种形式进行研究讨论:一种是幂指数函数的形式,另一种是指数函数的形式。以应力松弛试验为例,从理论和试验2个角度考虑初始坡度,都可以看出初始坡度对应力变化的影响,从而克服了忽略这一问题带来的误差。
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| 关 键 词： | 非粘滞阻尼模型 初始坡度 松弛函数 应力松弛试验 单位阶跃函数 |
Infiuence of Initial Ramp on Parameters of Nonviscously Damped Model in Relaxation Tests |
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| XIU Guozhong,SHI Bao,HE Yingzheng and WANG Liying.Infiuence of Initial Ramp on Parameters of Nonviscously Damped Model in Relaxation Tests[J].Journal of Naval Aeronautical Engineering Institute,2019,34(5):448-452. |
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| Authors: | XIU Guozhong SHI Bao HE Yingzheng and WANG Liying |
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| Institution: | Naval Aviation University, Yantai Shandong 264001, China,Naval Aviation University, Yantai Shandong 264001, China,Naval Aviation University, Yantai Shandong 264001, China and Naval Aviation University, Yantai Shandong 264001, China |
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| Abstract: | In this paper, the relaxation function of non-viscous damping model was divided into two forms. One was thatthe relaxation function was a power exponential function, the other was an exponential function. Taking stress relaxationtest as an example, the problem was overcomed by considering the initial slope from both theoretical and experimental per?spectives, the influenced of initial slope on stress variation can be seen, thus overcoming the error caused by neglectingthis problem. |
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| Keywords: | non-viscous damping model initial slope relaxation function relaxation test unit step function |
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