中国科学院机构知识库网格系统: 检索

Vibration Test and Control of Factory a Building under Excitation of Multiple Vibrating Screens 期刊论文 OAI收割
BUILDINGS, 2022, 卷号: 12, 期号: 5
作者: Yu, Jianxin; Li, Zhenzhen; Zhang, Zhenhua; Zhao, Wusheng; Niu, Zhiwei

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收藏 | 浏览/下载：10/0 | 提交时间：2023/08/02

vibration test modal analysis numerical simulation vibration reduction

DYNAMIC SIMULATION AND TEST ANALYSIS OF SPACE TRUSS AND LOAD STRUCTURE 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF ENGINEERING TECHNOLOGIES AND MANAGEMENT RESEARCH, 2018, 卷号: 5, 期号: 3, 页码: 123-133
作者: Luo HT(骆海涛); Wang P(王鹏); Wu TK(武廷课); Wang HN(王浩楠)

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收藏 | 浏览/下载：23/0 | 提交时间：2018/12/24

Space Truss and Load Dynamic Simulation Vibration Test Modal Test Correlation Analysis

Finite Element Model Updating Based on Sensitivity Analysis for 5-DOF Manipulator 会议论文 OAI收割
3rd IEEE Information Technology and Mechatronics Engineering Conference (ITOEC), Chongqing, PEOPLES R CHINA, October 3-5, 2017
作者: Yu, Min; Liu GM(刘广明); Fu J(富佳); Luo HT(骆海涛)

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收藏 | 浏览/下载：24/0 | 提交时间：2018/02/24

Manipulator Modal analysis Modal test Model updating

Application of Free Interface Modal Synthesis Method on Modal Test Boundary Transformation of One Missile Wing 会议论文 OAI收割
Phuket, THAILAND, 2017-08-06
作者: Feng, Song; He, Yun; Wen, Yan; Feng, S (reprint author), XiAn Inst Opt & Precis Mech, Xian, Shaanxi, Peoples R China.

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收藏 | 浏览/下载：28/0 | 提交时间：2018/04/03

Test Boundary Transformation Modal Synthesis Missile Wing Modal Parameters

Finite Element Model Updating Based on Sensitivity Analysis for 5-DOF Manipulator 会议论文 OAI收割
Chongqing, PEOPLES R CHINA, 2017-10-03
作者: Fu, Jia; Luo, Haitao; Yu, Min; Liu, Guangming; Luo, HT (reprint author), Chinese Acad Sci, Shenyang Inst Automat, State Key Lab Robot, Shenyang, Liaoning, Peoples R China.

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收藏 | 浏览/下载：25/0 | 提交时间：2018/03/06

Manipulator Modal Analysis Modal Test Model Updating

Ultra-high strength Mg-9Gd-4Y-0.5Zr alloy with bi-modal structure processed by traditional extrusion 期刊论文 OAI收割
METALS AND MATERIALS INTERNATIONAL, 2016, 卷号: 22, 期号: 6, 页码: 1091-1097
Hong, M; Shah, SSA; Wu, D; Chen, RS; Du, XH; Hu, NT; Zhang, YF

收藏 | 浏览/下载：65/0 | 提交时间：2016/12/28

Mg-Gd-Y alloy ultra-high strength bi-modal structure extrusion tensile test

Structural design of large aperture rectangular mirror for space telescope (EI CONFERENCE) 会议论文 OAI收割
2nd International Conference on Civil Engineering and Transportation, ICCET 2012, October 27, 2012 - October 28, 2012, Guilin, China
作者: Li Z.; Li Z.

收藏 | 浏览/下载：43/0 | 提交时间：2013/03/25

Structural design of large aperture mirror is one of the key technologies for space telescope development. To meet the requirements of high stiffness strength and thermal dimensional stability some factors such as support scheme materials selection lightweight design and flexible support design were taken into account. The three supports location of the mirror was determined according to the modal analytical solution. By adjusting the parameters of flexure hinge influences of gravity assembly stress and thermal stress on the mirror were reduced obviously. Finite element analysis (FEA) results indicate that the surface accuracy reach to rms10.2nm and 10.8nm under the gravity along optical axis direction and 5C uniform temperature rise respectively the fundamental frequency of the mirror component is 268Hz. Dynamics test shows that the first order natural frequency is 256Hz which shows an error less than 5% compared to FEA results. (2013) Trans Tech Publications Switzerland.

A strong coupled CFD-CSD method on computational aeroelastity (EI CONFERENCE) 会议论文 OAI收割
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China
Xi R.; Jia H.

收藏 | 浏览/下载：67/0 | 提交时间：2013/03/25

In this paper a strong coupled CFD-CSD method is developed to simulate the aeroelastic phenomena. The CFD solver is based on the finite-volume algorithm for the Navier-Stokes equations on unstructured grid. The CSD solver solves the aeroelastic governing equations in the modal space. Their coupling is realized by a dual-time method. The spring-based smoothing method is adopted to deform and regenerate the aerodynamic grid. Two test cases are selected to validate the authors' method for static and dynamic aeroelastity .The results of the simulation for the static aeroelastic problems of a missile wing show that the Lift Coefficient and Drag Coefficient are severally 7% and 5% lower than those don't consider the elasticity of the wing. The results for the flutter boundary prediction of the AGARD 445.6 wing have been proved much closer to the experiment than using the DLM. This method can describe the effects of fluid viscosity more exactly for highly nonlinear transonic flight conditions. The calculation has proved reliable in the subsonic regime but not accurate enough in the supersonic regime. 2011 IEEE.

Gimbal displacement error analysis on an electro-optical seeker (EI CONFERENCE) 会议论文 OAI收割
Optical Design and Testing IV, October 18, 2010 - October 20, 2010, Beijing, China
作者: Zhang X.; Zhang X.; Zhang X.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

It is essential to analyze the gimbal displacement errors for a seeker due to the importance for cueing of targets and tracking for the final approach. Otherwise for a seeker electro-driven with a concentric glass dome the large errors will decrease the picking pointing and tracking precision rooted from the displacement errors existing between the rotation center of the optical system and the gimbal. And the gimbaled camera system displacement errors are never eliminated but reduced due to the geometric errors consists of geometric tolerances of gimbal structure manufacture installation and vibration coming from working environment. In this paper the gimbal displacement errors in an electro-optically stabilized platform resulting from geometric errors and environment errors were analyzed and shown in detail. The mathematical modal of the gimbal displacement errors created based on multi-body dynamics demonstrated the connection between the gimbal displacement errors and the stabilized platform. Taking a visible light image seeker as a case the diameter is 120mm and the geometric tolerances came from the values of primary design and the vibration data came from the environmental vibration test on the pitch-yaw seeker and at the same time the errors resulting from installation were considered too. Based on calculating the maximum gimbal displacement error will reach to 0.2mm for pitching angle smaller than 40 and yawing angle smaller than 60. However the critical parts have been found out according to the probability theory and the reliability analysis successfully used in the paper and finally the maximum gimbal displacement error reduced to 0.1mm which is acceptable corresponding to the picking pointing and tracking precision for an optical imaging seeker. 2010 Copyright SPIE - The International Society for Optical Engineering.

On the frequency response of model materials in hydrotechnics 期刊论文 OAI收割
JOURNAL OF TESTING AND EVALUATION, 2006, 卷号: 34, 期号: 5, 页码: 405-409
作者: Zhou, Liyun; Chen, Jianbin

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收藏 | 浏览/下载：13/0 | 提交时间：2018/06/05

hydrotechnics test model material frequency response modal dynamic modulus of elasticity