Influencing factors of the performance of an impact buffering made of the composite granular chain
Influencing factors of the performance of an impact buffering made of the composite granular chain
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复合颗粒链冲击缓冲性能的影响因素
DOI：
10.1016/j.ijimpeng.2019.103463
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发表时间：
2020-03
影响因子：
5.1
通讯作者：
何存富
中科院分区：
文献类型：
--
作者：
王鹤萤;吴斌;刘秀成;杨哲化;何存富
通过有限元分析和实验研究了影响球形复合颗粒链冲击缓冲器性能的因素。将可调链插入到一维钢球颗粒链中，制备了复合颗粒链。提出了选取λ=（Ev Es）2 3 ρ v ρ s为关键影响因素，该因素决定了输出脉冲的特性。高非线性孤立波（HNSW）的主、次输出脉冲与入射脉冲的幅值比以及主、次输出脉冲之间的时延均表现出对参数λ的两阶段依赖性。这两个阶段通过λ== 1的情况彼此分开。为了减小主输出脉冲的幅值，建议构造一个λ接近于零的冲击缓冲器。主输出脉冲在可调链中的幅值衰减遵循幂律，幂指数与λ值呈负相关。对于给定参数λ的复合链，通过增加可调链的长度，可以减小主输出脉冲的幅值，从而提高冲击缓冲性能。
The influencing factors of the performances of an impact buffering made of the composite granular chain of spheres were investigated by both the finite element analysis and experiments. The composite granular chain was prepared by inserting an adjustable chain into a one-dimensional steel granular chain of spheres. It is suggested to select the key influencing factor as λ=(E v E s) 2 3 ρ v ρ s, which determined the features of output impulses. The amplitude ratios of primary and secondary output impulses to the incident impulse of highly nonlinear solitary wave (HNSW) and the time delay between the primary and secondary output impulses demonstrated the two-stage dependencies on the parameter of λ. The two stages were separated from each other by the case of λ== 1. It was suggested to construct an impact buffering with near-zero λ in order to minimize the amplitude of primary output impulse. The amplitude attenuation of the primary output impulse in the adjustable chain followed the power law and the power exponent was negatively correlated with the value of λ. As for a composite chain with a given parameter of λ, through increasing the length of the adjustable chain, the amplitude of the primary output impulse could be decreased in order to improve the performance of impact buffering.
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影响因子：
8.6
作者：
Nesterenko, VF;Daraio, C;Jin, S
通讯作者：
Jin, S
影响因子：
2.4
作者：
S. Hauver;X. He;D. Mei;E. Charalampidis;P. Kevrekidis;E. Kim;J. Yang;A. Vainchtein
通讯作者：
S. Hauver;X. He;D. Mei;E. Charalampidis;P. Kevrekidis;E. Kim;J. Yang;A. Vainchtein
影响因子：
2.4
作者：
Liu Xingyi;Jiao Tengfei;Ma Liang;Su Jiaye;Chen Weizhong;Sun Qicheng;Huang Decai
通讯作者：
Huang Decai
影响因子：
2.4
作者：
Kim, E.;Chaunsali, R.;Vakakis, A. F.
通讯作者：
Vakakis, A. F.
影响因子：
2.4
作者：
S. Job;F. Melo;A. Sokolow;S. Sen
通讯作者：
S. Job;F. Melo;A. Sokolow;S. Sen