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学者姓名：邵一川
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Abstract ：
This work aims to identify ways for the equivalent material parameters of metal-rubber (MR), as well as the establishment of theoretical and numerical methods for sandwich cylindrical shells with metal-rubber core (SCSMR) under thermal conditions. To achieve this goal, the first-order shear deformation theory and Hamiltonian principle are used to derive equations and expressions that consider temperature variations and elastic boundary constraints. This leads to the development of a novel dynamic model for sandwich cylindrical shell structures in a thermal environment. Furthermore, the study analyzes how vibration frequencies are affected by boundary spring stiffness and axial truncation number of displacement-permitted functions using the Jacobi-Ritz method. The impact of aspect ratio, core layer thickness ratio, and temperature on the vibration frequencies of SCS-MR is discussed. The results indicate that temperature slightly affects the frequency of SCS-MR. As the aspect ratio increases, the vibration frequency tends to decrease, irrespective of the circumferential wave number. However, the circumferential wave number plays a considerable role on vibration frequency associated with the core layer thickness ratio.
Keyword ：
Dynamic modeling Dynamic modeling Jacobi-Ritz Jacobi-Ritz Metal-rubber Metal-rubber Sandwich cylindrical shell Sandwich cylindrical shell
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| GB/T 7714 | Wu, Fang , Wei, Yuhan , Wu, Ruixian et al. Dynamic modeling and vibration characteristics of sandwich cylindrical shell with metal-rubber core [J]. | STRUCTURES , 2024 , 63 . |
| MLA | Wu, Fang et al. "Dynamic modeling and vibration characteristics of sandwich cylindrical shell with metal-rubber core" . | STRUCTURES 63 (2024) . |
| APA | Wu, Fang , Wei, Yuhan , Wu, Ruixian , Chen, Xiaochao , Shao, Yichuan , Xue, Xin . Dynamic modeling and vibration characteristics of sandwich cylindrical shell with metal-rubber core . | STRUCTURES , 2024 , 63 . |
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In this work, an innovative cylindrical metamaterial inspired by origami was developed. It featured arrays of pyramid units arranged both circumferentially and axially. The vibration transfer characteristics were determined using numerical method (Frequency Domain Frequency Response Solver of COMSOL) and dynamic testing (Scanning Vibrometer System). The results indicate that the structure effectively attenuates vibrations within the 0-6000 Hz range. Adjusting key geometric parameters can widen or shift vibration attenuation bands toward low-frequencies. Increasing the rod diameter weakens the vibration attenuation capability, while an increase in circumferential and axial angles has a positive impact on the frequency band for vibration attenuation. The significance of this work lies in providing an appropriate method to enhance vibration attenuation for the design and optimization of engineering structures.
Keyword ：
Cylindrical origami-inspired metamaterial Cylindrical origami-inspired metamaterial Frequency response function Frequency response function Normalized attenuation bandwidth Normalized attenuation bandwidth Pyramidal lattice structure Pyramidal lattice structure Vibration transmission tests Vibration transmission tests
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| GB/T 7714 | Xue, Xin , Li, Zeyu , Wu, Fang et al. Vibration transmission characteristics of the pyramidal cylinder lattice truss structure [J]. | MECHANICS RESEARCH COMMUNICATIONS , 2024 , 137 . |
| MLA | Xue, Xin et al. "Vibration transmission characteristics of the pyramidal cylinder lattice truss structure" . | MECHANICS RESEARCH COMMUNICATIONS 137 (2024) . |
| APA | Xue, Xin , Li, Zeyu , Wu, Fang , Wei, Yuhan , Shao, Yichuan , Zhang, Mangong et al. Vibration transmission characteristics of the pyramidal cylinder lattice truss structure . | MECHANICS RESEARCH COMMUNICATIONS , 2024 , 137 . |
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为实现形状驱动能耗与复合材料力学性能的最佳配合,本文在热致环氧形状记忆聚合物基体中提高增韧剂新戊二醇二缩水醚(NGDE)含量来降低其玻璃化转变温度,同时添加短切碳纤维(SCF)来抵消由增韧剂引起的刚度降低负面效果.通过实验研究了不同NGDE、SCF含量对复合材料形状记忆转变温度、形状记忆性能和力学性能的影响.结果表明,增加NGDE含量可将环氧聚合物基体的形状记忆转变温度从90 ℃降至43℃,其储能模量和弯曲模量也随之降低.在11wt％NGDE上添加SCF后,复合材料的玻璃态储能模量、橡胶态储能模量、弯曲模量最高可提高至原始试样的1.9倍、7倍和2.4倍.
Keyword ：
储能模量 储能模量 弯曲模量 弯曲模量 形状记忆转变温度 形状记忆转变温度 环氧形状记忆复合材料 环氧形状记忆复合材料 短切碳纤维 短切碳纤维
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| GB/T 7714 | 罗发祥 , 魏要强 , 武南 et al. 短切碳纤维增强环氧树脂形状记忆复合材料的制备与性能研究 [J]. | 宇航材料工艺 , 2023 , 53 (3) : 60-67 . |
| MLA | 罗发祥 et al. "短切碳纤维增强环氧树脂形状记忆复合材料的制备与性能研究" . | 宇航材料工艺 53 . 3 (2023) : 60-67 . |
| APA | 罗发祥 , 魏要强 , 武南 , 宋世彬 , 邵一川 . 短切碳纤维增强环氧树脂形状记忆复合材料的制备与性能研究 . | 宇航材料工艺 , 2023 , 53 (3) , 60-67 . |
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本发明涉及一种基于金属橡胶与磁流变效应的半主动减振抗冲装置，包括具有空腔的壳体、安装在壳体上封闭空腔的端盖，所述空腔内上端、内下端分别安装有上金属橡胶元件、下金属橡胶元件，上金属橡胶元件、下金属橡胶元件之间设有活塞，活塞外周与空腔内壁之间具有间隙，活塞上端中部竖直设置有活塞杆，活塞杆贯穿上金属橡胶元件、端盖后伸出壳体外，所述空腔被磁流变填充满，活塞内设置有轴向绕组磁场，本装置采用金属橡胶为主、磁流变效应为辅助控制的固液复合减振器方案，能产生较理想的减振性能，且智能能可控，后续可在实际试验与生产中逐步开发适应不同设备运行特点的配套控制程序，实际应用前景广阔。
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| GB/T 7714 | 吴乙万 , 霍博琛 , 白鸿柏 et al. 基于金属橡胶与磁流变效应的半主动减振抗冲装置 : CN202111334201.1[P]. | 2021-11-11 00:00:00 . |
| MLA | 吴乙万 et al. "基于金属橡胶与磁流变效应的半主动减振抗冲装置" : CN202111334201.1. | 2021-11-11 00:00:00 . |
| APA | 吴乙万 , 霍博琛 , 白鸿柏 , 任志英 , 薛新 , 邵一川 . 基于金属橡胶与磁流变效应的半主动减振抗冲装置 : CN202111334201.1. | 2021-11-11 00:00:00 . |
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本发明涉及一种基于金属橡胶与磁流变效应的复合减振器及其工作方法，包括减震缸体和位于减震缸体外围的线圈机构；所述减震缸体内设有将其内部空间分为上、下两相连腔体的压盘，所述压盘上端连接有从减震缸体上端穿出的活塞杆，减震缸体内部充满磁流变液，压盘上方的上腔体中填充有上金属橡胶元件，压盘下方的下腔体中填充有下金属橡胶元件。本发明基于金属橡胶与磁流变效应的复合减振器结构简单可靠，采用金属橡胶为主、磁流变效应为辅助控制的固液复合减振方式，增强金属橡胶阻尼原件的刚度，提高整个装置的减振性能，兼有可控性高以及可靠性强的特点。
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| GB/T 7714 | 吴乙万 , 霍博琛 , 白鸿柏 et al. 基于金属橡胶与磁流变效应的复合减振器及其工作方法 : CN202111369989.X[P]. | 2021-11-18 00:00:00 . |
| MLA | 吴乙万 et al. "基于金属橡胶与磁流变效应的复合减振器及其工作方法" : CN202111369989.X. | 2021-11-18 00:00:00 . |
| APA | 吴乙万 , 霍博琛 , 白鸿柏 , 任志英 , 薛新 , 邵一川 . 基于金属橡胶与磁流变效应的复合减振器及其工作方法 : CN202111369989.X. | 2021-11-18 00:00:00 . |
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As a novel lightweight composite structure with notable mechanical resistance and thermal insulation characteristics in high-temperature environments, the sandwich cylindrical shell with entangled metallic wire mesh (SCS-EMWM) has been growing interest in industrial applications. This study focuses on investigating the thermo-mechanical behavior of the SCS-EMWM in high-temperature environments. The static mechanical properties of entangled metal wire mesh (EMWM) are first characterized, and the macroscopic mechanical properties are identified using the Ogden-Mullins model. Subsequently, the deformation modes at different densities and temperatures are analyzed through theoretical and finite element methods. The radial compression test of SCS-EMWM is performed to characterize its energy dissipation (Delta W), loss factor (eta), and secant stiffness (K). The quasi-static loading-unloading results of the EMWM reveal a positive correlation between temperature, density, and the mechanical behavior. In addition, as the density and temperature increase, the peak load of SCS-EMWM continuously increases from 20 to 200 N. Under high-temperature conditions, the radial compression test of SCS-EMWM reveals a significant concurrence between experimental and simulation results regarding load variations. Furthermore, in comparison to EMWM, the loss factor of SCS-EMWM exhibits an approximate increase of 0.1 and shows a positive correlation with temperature, while it decreases with increasing density. This study focuses on investigating the thermo-mechanical behavior of the sandwich cylindrical shell with entangled metallic wire mesh (SCS-EMWM) in high-temperature environments. The numerical and experimental methods are applied to systematically analyze the high-temperature state of its energy dissipation, loss factor, and secant stiffness.image (c) 2023 WILEY-VCH GmbH
Keyword ：
energy dissipation energy dissipation entangled metallic wire material entangled metallic wire material parameter identification parameter identification sandwich cylindrical shell sandwich cylindrical shell thermo-mechanical properties thermo-mechanical properties
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| GB/T 7714 | Xue, Xin , Lin, Congcong , Wei, Yuhan et al. Thermo-Mechanical Characteristics of a Sandwich Cylindrical Shell with Entangled Metallic Wire Mesh: Numerical and Experimental Analysis [J]. | ADVANCED ENGINEERING MATERIALS , 2023 , 26 (3) . |
| MLA | Xue, Xin et al. "Thermo-Mechanical Characteristics of a Sandwich Cylindrical Shell with Entangled Metallic Wire Mesh: Numerical and Experimental Analysis" . | ADVANCED ENGINEERING MATERIALS 26 . 3 (2023) . |
| APA | Xue, Xin , Lin, Congcong , Wei, Yuhan , Xiong, Yunlingzi , Zhang, Mangong , Shao, Yichuan et al. Thermo-Mechanical Characteristics of a Sandwich Cylindrical Shell with Entangled Metallic Wire Mesh: Numerical and Experimental Analysis . | ADVANCED ENGINEERING MATERIALS , 2023 , 26 (3) . |
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Abstract ：
本实用新型涉及一种具有负泊松比和可调带隙的正交金属丝网结构，包括负泊松比的金属骨架，所述金属骨架的顶部设置有固定连接片，所述固定连接片上开设有若干个圆孔，其中一部分圆孔经金属骨架顶部的波峰连接节点一一对应穿过，且两者之间均过盈穿插连接有固定金属丝，另一部分圆孔上均固连有振子，所述振子与波峰连接节点均呈矩形阵列排布，形成两种点阵胞元，两种胞元之间交互作用。本实用新型采用三维双箭头单胞阵列组合而成，结构中金属骨架与振子通过固定连接片组合，使结构能同时呈现出负泊松比与带隙减振性能，实现了缓冲吸能特性与带隙减振多功能复合，且点阵结构本身具有轻质承载能力强的特点，能满足工程实际中日益复杂的多功能需求。
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| GB/T 7714 | 薛新 , 李泽宇 , 林聪聪 et al. 具有负泊松比和可调带隙的正交金属丝网结构 : CN202223069226.6[P]. | 2022-11-19 00:00:00 . |
| MLA | 薛新 et al. "具有负泊松比和可调带隙的正交金属丝网结构" : CN202223069226.6. | 2022-11-19 00:00:00 . |
| APA | 薛新 , 李泽宇 , 林聪聪 , 吴芳 , 邵一川 . 具有负泊松比和可调带隙的正交金属丝网结构 : CN202223069226.6. | 2022-11-19 00:00:00 . |
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This research addresses the free vibration performance of bi-directional functionally graded materials (BDFGMs) rectangular plate with general boundary restraints and geometrical imperfections. The sym-metric/asymmetric material distributions subject to power-law along in-plane two directions are consid-ered. Two types of geometric imperfections are formulated employing transcendental functions, including the sine-type imperfection which is global eccentric/symmetrical and depicted by sine and exponential functions, and the cosine-type global/localized imperfections which is simulated by hyperbolic and cosine functions. The general boundary restraints are imitated by artificial virtual springs. The Lagrangian energy function is formulated, and then vibration characteristics of plates are acquired with the Ritz method and improved Fourier series. Verifications are carried out for accuracy of theoretical model and reliability of solution method. A comprehensive numerical investigation are exhibited to explore the influencing mech-anism of material distribution patterns, geometrical imperfection modal and elastic boundary restraints on vibration performance of rectangular plates. The results show that the in-plane material gradient can function as regulatory measures for dynamic characteristic of plates. In addition, geometric imperfec-tions may cause singularity in vibration performance of plate. These innovative results may serve as a benchmark for future studies on design or analysis of plates.(c) 2022 Elsevier Masson SAS. All rights reserved.
Keyword ：
Bi-directional functionally graded materials Bi-directional functionally graded materials Elastic restraints Elastic restraints Free vibration Free vibration Global and localized imperfections Global and localized imperfections
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| GB/T 7714 | Chen, Xiaochao , Lu, Yixin , Wu, Zhangbin et al. Free vibration of in-plane bi-directional functionally graded materials rectangular plates with geometric imperfections and general elastic restraints [J]. | AEROSPACE SCIENCE AND TECHNOLOGY , 2023 , 132 . |
| MLA | Chen, Xiaochao et al. "Free vibration of in-plane bi-directional functionally graded materials rectangular plates with geometric imperfections and general elastic restraints" . | AEROSPACE SCIENCE AND TECHNOLOGY 132 (2023) . |
| APA | Chen, Xiaochao , Lu, Yixin , Wu, Zhangbin , Shao, Yichuan , Xue, Xin , Wu, Yiwan . Free vibration of in-plane bi-directional functionally graded materials rectangular plates with geometric imperfections and general elastic restraints . | AEROSPACE SCIENCE AND TECHNOLOGY , 2023 , 132 . |
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A horizontally symmetric all-metallic vibration isolator (AM-VI) is proposed to further investigate the dynamic mechanical performance. The novel AM-VI was constructed by combining hat-shaped metal rubber and oblique springs, which were connected in parallel. The springs were arranged symmetrically relative to the support. The elliptic method and the frequency sweeping method were used to compare the dynamic stiffness and the loss factor of the AM-VI. The results demonstrated that the dynamic stiffness and the loss factor calculated by two distinct test methodologies were considerably different, indicating that the inertial force effect of the dynamic testing equipment should be taken into count when adopting the elliptic method. Furthermore, when the vibration isolation performance was evaluated by utilizing mechanical impedance and force transmissibility, the AM-VI achieved excellent vibration isolation performance within a broad frequency range.
Keyword ：
dynamic stiffness dynamic stiffness force transmissibility force transmissibility inertial force effect inertial force effect loss factor loss factor
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| GB/T 7714 | Zou, Luming , Zheng, Chao , Zheng, Zhi et al. Comparison of Dynamic Performance of an All-Metallic Vibration Isolator by Elliptic Method and Frequency Sweeping Method [J]. | SYMMETRY-BASEL , 2022 , 14 (10) . |
| MLA | Zou, Luming et al. "Comparison of Dynamic Performance of an All-Metallic Vibration Isolator by Elliptic Method and Frequency Sweeping Method" . | SYMMETRY-BASEL 14 . 10 (2022) . |
| APA | Zou, Luming , Zheng, Chao , Zheng, Zhi , Hu, Feng , Shao, Yichuan , Xue, Xin . Comparison of Dynamic Performance of an All-Metallic Vibration Isolator by Elliptic Method and Frequency Sweeping Method . | SYMMETRY-BASEL , 2022 , 14 (10) . |
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In this paper, superelastic (SE) NiTi wire is used to fabricate axially symmetric wire mesh dampers (WMDs) with the expectation of a higher damping capacity. However, the phase transformation damping of the NiTi WMD could be suppressed by the cold-work-induced dislocation. Therefore, the NiTi WMDs were heat-treated and then tested by a hydraulic universal testing machine. The NiTi WMD is found to achieve higher damping capacity when heat-treated at 200 degrees C. However, the WMD heat-treated at 250 degrees C suffers from a sharp decline in the loss factor in exchange for an improvement in the stiffness. The sine sweep test was then conducted to examine the dependency of the WMD's vibration isolation performance upon the heat treatment temperature and the excitation acceleration. The NiTi WMD outperforms the 304 stainless steel (SS 304) WMD in damping capacity only when the excitation acceleration magnitude is less than 1.5 g. The stiffness of NiTi WMD can be improved without significantly compromising its damping capacity by heat treatment at 200 degrees C for 30 min. The present work carries out comprehensive measurements of the NiTi WMD's response to dynamic mechanical test and sine sweep test and addresses how heat treatment influences the stiffness and damping capacity of the SE NiTi WMD.
Keyword ：
elastic porous material elastic porous material heat treatment heat treatment pseudoelasticity pseudoelasticity sine sweep test sine sweep test vibration isolation vibration isolation wire mesh damper wire mesh damper
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| GB/T 7714 | Shao, Yichuan , Su, Mingyang , Wei, Yaoqiang et al. Effect of Heat Treatment on the Vibration Isolation Performance of Axially Symmetric NiTi Wire Mesh Damper [J]. | SYMMETRY-BASEL , 2022 , 14 (10) . |
| MLA | Shao, Yichuan et al. "Effect of Heat Treatment on the Vibration Isolation Performance of Axially Symmetric NiTi Wire Mesh Damper" . | SYMMETRY-BASEL 14 . 10 (2022) . |
| APA | Shao, Yichuan , Su, Mingyang , Wei, Yaoqiang , Wang, Jinyu , Wu, Yiwan , Chen, Xiaochao et al. Effect of Heat Treatment on the Vibration Isolation Performance of Axially Symmetric NiTi Wire Mesh Damper . | SYMMETRY-BASEL , 2022 , 14 (10) . |
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