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学者姓名：闫维明
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Abstract ：
A non-packed particle damper (NPPD) is an advantageous passive damping device with a wide frequency band and good robustness. However, its damping mechanism remains unclear, and its application for controlling vibrations in civil engineering structures is being explored. By analysing the particle motion state, this paper proposes a double inertia mass equivalent model (DIMEM) to reflect the interaction between particles. The effect of inertia was introduced in the DIMEM to consider the rolling effect of particles on the damping performance of the NPPD. An electromagnetic vibration table test of a single-storey frame structure with an NPPD was designed and performed. The parameter determination method and applicability of the DIMEM were also evaluated based on experimental and theoretical analyses. Furthermore, the effects of the parameters on the damping performance of the NPPD were systematically analysed. The results confirm that the equivalent model can reflect the damping performance and mechanism of the NPPD. The particle group inertia is an inherent property of the NPPD. With an increase in the ratio of inertance to particle mass, the optimal vibration damping performance deteriorates under harmonic excitation, and the corresponding equivalent connection stiffness gradually increases. The equivalent connection stiffness, additional mass ratio, recovery coefficient, and acceleration normalised collision distance significantly affect the damping performance and mechanism. However, the effects of the equivalent connection damping coefficient and rolling friction coefficient are negligible. The proposed DIMEM and the corresponding parameter analysis can provide an important reference for the application of NPPDs in civil engineering. © 2020
Keyword ：
Friction Friction Stiffness Stiffness Damping Damping
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| GB/T 7714 | Huang, Xu-hong , Xu, Wei-bing , Yan, Wei-ming et al. Equivalent model and parameter analysis of non-packed particle damper [J]. | Journal of Sound and Vibration , 2021 , 491 . |
| MLA | Huang, Xu-hong et al. "Equivalent model and parameter analysis of non-packed particle damper" . | Journal of Sound and Vibration 491 (2021) . |
| APA | Huang, Xu-hong , Xu, Wei-bing , Yan, Wei-ming , Wang, Jin . Equivalent model and parameter analysis of non-packed particle damper . | Journal of Sound and Vibration , 2021 , 491 . |
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Abstract ：
A pounding tuned rotary mass damper (PTRMD) was developed on the basis of the study of a tuned mass damper and a particle damper. The influence of various parameters on the vibration damping performance and mechanism is not clear. A PTRMD mechanical model was established by considering the collision and friction. The vibration process was divided into non-collision processes, collision processes, and viscous vibration process, and the corresponding motion equations were established separately. Finally, based on the numerical simulation, the parameter analysis was performed on the collision gap ratio, particle motion, frequency ratio, rolling friction coefficient, collision recovery coefficient, particle mass, the harmonic excitation intensity and frequency. The results show that when the particle motion frequency is small, the PTRMD damping effect increases linearly with the collision gap ratio, and the influence of the excitation amplitude is small. When the particle motion frequency is relatively large, the damping effect increases first and then decreases with the collision spacing ratio, and is greatly affected by the excitation amplitude. © 2021, Editorial Office of Journal of Vibration and Shock. All right reserved.
Keyword ：
Friction Friction Equations of motion Equations of motion Damping Damping
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| GB/T 7714 | Huang, Xuhong , Yan, Weiming , Xu, Weibing et al. A mechanical model and parameter analysis of a pounding tuned rotary mass damper [J]. | Journal of Vibration and Shock , 2021 , 40 (8) : 179-186 . |
| MLA | Huang, Xuhong et al. "A mechanical model and parameter analysis of a pounding tuned rotary mass damper" . | Journal of Vibration and Shock 40 . 8 (2021) : 179-186 . |
| APA | Huang, Xuhong , Yan, Weiming , Xu, Weibing , Wang, Baoshun . A mechanical model and parameter analysis of a pounding tuned rotary mass damper . | Journal of Vibration and Shock , 2021 , 40 (8) , 179-186 . |
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Abstract ：
Multi-particle dampers (M-PD) can be potentially applied in civil engineering because of their good damping effect and wide frequency band. However, because of their complex nonlinear mechanical properties and the lack of a reasonable mechanical model, their development and application in practical engineering are limited. Therefore, without considering the accumulation of particles, an equivalent inertia single-particle mechanical model (EISM) is proposed by introducing an inerter to consider the effect of particle rolling on the damping mechanism and performance. Dynamic analyses of the EISM single degree of freedom system in the non-collision stage and the periodic motion after collision are performed based on the analytical solution. The influence of inertance on the frequency response curve of dynamic amplification factors in the no-collision stage and the analytical solution for the symmetric two-impacts-per-cycle motion are discussed in detail. Numerical simulations and experimental verification are conducted to verify the rationality of the above theoretical analysis. The results show that EISM can further clarify the nonlinear characteristics of M-PD. The inertance has a significant influence on the frequency response curve of the dynamic amplification factors as well as the boundary conditions and stability of the analytical solution of the symmetric two-impacts-per-cycle motion. The proposed EISM and the corresponding theoretical analysis in this study can theoretically support further analysis of the vibration reduction mechanism and design of M-PDs. © 2021 John Wiley & Sons, Ltd.
Keyword ：
Frequency response Frequency response Vibration analysis Vibration analysis Damping Damping Degrees of freedom (mechanics) Degrees of freedom (mechanics) Dynamic loads Dynamic loads
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| GB/T 7714 | Huang, Xu-hong , Xu, Wei-bing , Wang, Jin et al. Equivalent model of a multi-particle damper considering particle rolling and its analytical solution [J]. | Structural Control and Health Monitoring , 2021 , 28 (6) . |
| MLA | Huang, Xu-hong et al. "Equivalent model of a multi-particle damper considering particle rolling and its analytical solution" . | Structural Control and Health Monitoring 28 . 6 (2021) . |
| APA | Huang, Xu-hong , Xu, Wei-bing , Wang, Jin , Yan, Wei-ming , Chen, Yan-jiang . Equivalent model of a multi-particle damper considering particle rolling and its analytical solution . | Structural Control and Health Monitoring , 2021 , 28 (6) . |
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Abstract ：
Multi-particle dampers have a good application prospect in the field of civil engineering structures because of their good damping efficiency and wide frequency band. However, the highly complex nonlinear mechanical properties and the lack of a reasonable mechanical model limit its application and development in practical engineering. In view of this, an equivalent single-particle mechanical model with inerter was established without considering the accumulation of particles. The introduction of inerter further considered the influence of particle rolling on the damping mechanism and effect. Then, the theoretical analysis of a single-degree-of-freedom structure with a multi-particle damper was carried out. The influence of inertance on the frequency response curve of displacement in the non-collision stage and the steady-state analytical solution of periodic collision after collision were analyzed emphatically. Numerical simulation and experimental research were also carried out to verify the correctness of the theoretical analysis. The results show that the equivalent model proposed can further clarify the nonlinear characteristics of the multi-particle damper after considering the inerter. The inertia coefficient has a significant influence on the frequency response curve of the controlled structure in the non-collision stage and the analytical solution (boundary and stability) of the periodic motion after collision. The steady-state analytical solution of periodic motion provides a theoretical basis for further parameter influence analysis and for damping mechanism analysis of particle dampers. Copyright ©2021 Engineering Mechanics. All rights reserved.
Keyword ：
Frequency response Frequency response Damping Damping Degrees of freedom (mechanics) Degrees of freedom (mechanics)
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| GB/T 7714 | Huang, Xu-Hong , Xu, Wei-Bing , Wang, Jin et al. Equivalent model of multi-particle damper considering inerter and steady-state solution of controlled structure [J]. | Engineering Mechanics , 2021 , 38 (4) : 136-149 . |
| MLA | Huang, Xu-Hong et al. "Equivalent model of multi-particle damper considering inerter and steady-state solution of controlled structure" . | Engineering Mechanics 38 . 4 (2021) : 136-149 . |
| APA | Huang, Xu-Hong , Xu, Wei-Bing , Wang, Jin , Yan, Wei-Ming , Chen, Yan-Jiang . Equivalent model of multi-particle damper considering inerter and steady-state solution of controlled structure . | Engineering Mechanics , 2021 , 38 (4) , 136-149 . |
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Abstract ：
Self-pierce riveting (SPR) with high connection efficiency and automatic level is suitable for joining galvanized steel sheets in cold-formed steel structures. 51 SPR joints in galvanized steel sheet were tested to study their shear performance. The effects of sheet thickness, sheet thickness ratio, and rivet length on the failure mechanism and shear performance were investigated. And an empirical equation about the relationship of sheet thickness and rivet length was developed. This paper also analyzed the applicability for the existing calculation method of shear strength of SPR joints and the design methods of shear strength of self-drilling screw joints in some specifications, and then proposed a new calculation method of shear strength. The results showed that sheet thickness and thickness ratios were two critical factors in the shear performance and failure mechanism of SPR joints. There was an optimal rivet length for each sheet thickness, which could be calculated directly by the developed empirical equation. Compared with the existing methods, the calculation method of shear strength for galvanized steel sheet SPR joints proposed in this paper considered overall failure modes, and had superior calculation accuracy and favorable stability.
Keyword ：
SPR joints SPR joints Failure mechanism Failure mechanism Shear performance Shear performance Calculation method Calculation method Galvanized steel sheet Galvanized steel sheet
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| GB/T 7714 | Xie, Zhiqiang , Zhang, Ailin , Yan, Weiming et al. Study on shear performance and calculation method for self-pierce riveted joints in galvanized steel sheet [J]. | THIN-WALLED STRUCTURES , 2021 , 161 . |
| MLA | Xie, Zhiqiang et al. "Study on shear performance and calculation method for self-pierce riveted joints in galvanized steel sheet" . | THIN-WALLED STRUCTURES 161 (2021) . |
| APA | Xie, Zhiqiang , Zhang, Ailin , Yan, Weiming , Zhang, Yanxia , Mu, Tingting , Yu, Cheng . Study on shear performance and calculation method for self-pierce riveted joints in galvanized steel sheet . | THIN-WALLED STRUCTURES , 2021 , 161 . |
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Abstract ：
The vibration of cross laminated timber (CLT) floor is closely related to human-induced loadings. However, research and prediction approaches regarding human-induced vibration of the CLT floor have been mostly limited to a single-person excitation condition. This paper presents new prediction approaches to the vibration response of the CLT floor under multi-person loadings. The effect of multi-person loadings on the vibration performance of a CLT floor was investigated through numerical modelling, experimental testing and analytical investigation. A finite element model was developed through a computational software to perform an accurate analysis of human-induced loadings. An analytical model was established to predict human-induced vibration of the CLT floor under multi-person loadings. Experimental tests were conducted to validate the numerical modelling. Results of both numerical modelling and experimental testing showed that the vibration performance of the CLT floor under multi-person loadings was almost double that under single-person loadings. Thus, multi person activities are more likely to cause the occupants feelings of discomfort. A method for predicting the human-induced vibration of the CLT floor under multi-person loadings was then developed. The measured response, numerical modelled response, and predicted response were compared using an existing design metric, vibration dose value (VDV). The results were largely consistent. It is therefore concluded that the proposed prediction method will enable engineers to design timber floor systems that consider multi-person loadings.
Keyword ：
Human-induced vibration Human-induced vibration Multi-person loadings Multi-person loadings Cross laminated timber floor Cross laminated timber floor
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| GB/T 7714 | Wang, Chang , Chang, Wen-Shao , Yan, Weiming et al. Predicting the human-induced vibration of cross laminated timber floor under multi-person loadings [J]. | STRUCTURES , 2021 , 29 : 65-78 . |
| MLA | Wang, Chang et al. "Predicting the human-induced vibration of cross laminated timber floor under multi-person loadings" . | STRUCTURES 29 (2021) : 65-78 . |
| APA | Wang, Chang , Chang, Wen-Shao , Yan, Weiming , Huang, Haoyu . Predicting the human-induced vibration of cross laminated timber floor under multi-person loadings . | STRUCTURES , 2021 , 29 , 65-78 . |
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Abstract ：
针对调谐质量阻尼器(TMD)和颗粒阻尼器的减振特点及各自不足，提出将并联式单向单颗粒阻尼器(PSSPD)与TMD有机结合的复合减振技术方案—PSSPD与TMD并联体系。在深入剖析其减振特性的基础上，将颗粒与受控结构之间的碰撞力等效为脉冲力，建立复合减振体系力学模型和方程。采用时域和频域结合的方法并对模型进行分析并求解，使求解过程直接、无需求解微分方程且易于求解特殊激励形式动力响应。提出简谐激励下复合减振结构系统的最优减振参数设计方法，对该系统进行性能参数分析，验证了力学模型的精度及优化方法的可行性。建立该复合减振体系在地震动下的参数优化方法并对其合理性和准确性进行验证。最后，对PSSPD、TM...
Keyword ：
减振机理 减振机理 颗粒阻尼器 颗粒阻尼器 结构振动控制 结构振动控制 优化分析 优化分析 调谐质量阻尼器 调谐质量阻尼器
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| GB/T 7714 | 王宝顺 , 何浩祥 , 闫维明 . 质量调谐-颗粒阻尼器复合减振体系的力学解析及优化分析 [J]. | 工程力学 , 2021 , (06) : 191-208 . |
| MLA | 王宝顺 et al. "质量调谐-颗粒阻尼器复合减振体系的力学解析及优化分析" . | 工程力学 06 (2021) : 191-208 . |
| APA | 王宝顺 , 何浩祥 , 闫维明 . 质量调谐-颗粒阻尼器复合减振体系的力学解析及优化分析 . | 工程力学 , 2021 , (06) , 191-208 . |
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Abstract ：
桥梁伸缩装置(以下简称伸缩缝)使用环境恶劣、受荷形式复杂,易出现多种病害.伸缩缝病害会造成桥梁耐久性降低,车致桥梁动力响应加重等不利现象.因此,伸缩缝病害机理及其处置方法和考虑伸缩缝参数影响的车-桥耦合动力响应规律研究受到了广泛关注.本文综述了桥梁伸缩缝力学性能,常见病害及其影响,病害机理及其处置方法等的发展现状;重点讨论了考虑伸缩缝参数及其变化影响的桥梁动力响应的研究进展及存在的问题;展望了未来桥梁伸缩缝研究中有待解决的关键问题.
Keyword ：
病害 病害 伸缩缝 伸缩缝 车-桥耦合振动 车-桥耦合振动 动力响应 动力响应 结构韧性 结构韧性
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| GB/T 7714 | 肖波 , 许维炳 , 闫晓宇 et al. 公路桥面伸缩装置及其对桥梁静动力性能影响综述 [J]. | 防灾减灾工程学报 , 2021 , 41 (1) : 167-180 . |
| MLA | 肖波 et al. "公路桥面伸缩装置及其对桥梁静动力性能影响综述" . | 防灾减灾工程学报 41 . 1 (2021) : 167-180 . |
| APA | 肖波 , 许维炳 , 闫晓宇 , 闫维明 , 陈彦江 , 王瑾 et al. 公路桥面伸缩装置及其对桥梁静动力性能影响综述 . | 防灾减灾工程学报 , 2021 , 41 (1) , 167-180 . |
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Abstract ：
颗粒阻尼技术因减振效果好、作用频带宽等优点使其在土木工程领域中具有良好的应用前景,然而因其具有高度复杂的非线性力学特性,并缺少合理的力学模型,限制了其在实际工程中的应用和发展。鉴于此,以土木工程应用为背景,在不考虑阻尼颗粒发生堆积的前提下,通过引入惯容器来考虑颗粒群滚动对阻尼器减振机理及减振效果影响,建立了考虑惯容的多颗粒阻尼器等效单颗粒力学模型;结合颗粒运动状态,分别进行了未碰撞时及碰撞发生后多颗粒阻尼器单自由度结构的响应分析,重点探讨了惯容系数对未碰撞时动力放大系数频响曲线及碰撞发生后周期2次碰撞稳态解析解的影响规律,并采用数值仿真和试验方法进行验证。结果表明,考虑惯容属性后等效模型能够进...
Keyword ：
惯容 惯容 周期运动 周期运动 多颗粒阻尼器 多颗粒阻尼器 稳定性 稳定性 等效模型 等效模型
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| GB/T 7714 | 黄绪宏 , 许维炳 , 王瑾 et al. 考虑惯容的颗粒阻尼器等效力学模型及其受控结构稳态解研究 [J]. | 工程力学 , 2021 , 38 (04) : 136-149 . |
| MLA | 黄绪宏 et al. "考虑惯容的颗粒阻尼器等效力学模型及其受控结构稳态解研究" . | 工程力学 38 . 04 (2021) : 136-149 . |
| APA | 黄绪宏 , 许维炳 , 王瑾 , 闫维明 , 陈彦江 . 考虑惯容的颗粒阻尼器等效力学模型及其受控结构稳态解研究 . | 工程力学 , 2021 , 38 (04) , 136-149 . |
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Abstract ：
滚动碰撞式调制质量阻尼器(PTRMD)由调谐质量阻尼器及颗粒阻尼器发展而来,其在土木工程减振控制领域中的研究仍处于初步分析与探索阶段,阻尼器自身参数及外部激励条件对其减振性能的影响尚不明确。在考虑颗粒与主体结构碰撞和摩擦效应的基础上,建立PTRMD力学模型,并将颗粒和结构的振动过程划分为非碰撞过程、碰撞过程及黏滞振动过程;建立PTRMD-单自由度结构运动微分方程并分别对其进行求解;基于数值仿真分析方法,分别对碰撞间隙比、颗粒运动频率比、滚动摩擦因数、碰撞恢复系数、颗粒质量与简谐激励强度及频率等参数对PTRMD减振性能的影响进行研究。结果表明:颗粒运动频率比较小时,PTRMD减振效果随碰撞间隙比...
Keyword ：
滚动碰撞式调制质量阻尼器(PTRMD) 滚动碰撞式调制质量阻尼器(PTRMD) 振动控制 振动控制 减振机理 减振机理 参数分析 参数分析 碰撞 碰撞
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| GB/T 7714 | 黄绪宏 , 闫维明 , 许维炳 et al. 滚动碰撞式调制质量阻尼器力学模型及参数分析 [J]. | 振动与冲击 , 2021 , 40 (08) : 179-186 . |
| MLA | 黄绪宏 et al. "滚动碰撞式调制质量阻尼器力学模型及参数分析" . | 振动与冲击 40 . 08 (2021) : 179-186 . |
| APA | 黄绪宏 , 闫维明 , 许维炳 , 王宝顺 . 滚动碰撞式调制质量阻尼器力学模型及参数分析 . | 振动与冲击 , 2021 , 40 (08) , 179-186 . |
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