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Anti-resonance frequency of the sensitivity analysis and application


Table 114 Vibration Engineering Vol 9, Figure 2 Schematic diagram of plate failure rate of 1 lift up anti-resonance results calculated by the fifth-order anti-resonance frequency of each node in Table 2 focus on the sensitivity of the quality of bad nodes Nang Lu Min 2 calculation results decline of 3 to modify the node before the Yuan revised focus on the quality of the modified node, the node before the amendment before the tragedy changed the modified (kg) (kg) (kg) (kg) we can see from Table 2, the node sensitivity Sheng l4 large,[link widoczny dla zalogowanych], while the sensitivity of 5,10,12 point zero, 1,3,13,15 four points due to constraints on natural frequency, the sensitivity of anti-resonance frequencies are zero. Anti-resonance frequency of the second-order changes, it moved to 1320. Orad / s, by the fifth iteration,[link widoczny dla zalogowanych], the second-order anti-resonance frequency changes to 1320. Orad / s. Modify the node before and focus on the quality of the revised Table 3. Re-calculated the revised anti-resonance frequency of the order value,[link widoczny dla zalogowanych], as shown in Table 4, the second-order anti-resonance frequency of the actual modifications to the 1320.201rad / s. Absolute error is the 0.2rad / s, while the relative error is 0.77%, modify the result is satisfactory. Decline of 4 anti-resonant frequency of re-calculation results 1 Zhang et al: Sensitivity Analysis of resonance frequency tray application l5 buildings above two numerical examples of anti-resonance frequency sensitivity analysis, structural dynamics modification is more accurate, and therefore a practical method, and can be used in engineering practice. References Wutian Chang. Theoretical explanations about the anti-resonance Ha applications. Dynamic analysis and testing technology visit, 1989,[link widoczny dla zalogowanych], (4); 34 - 39 Liu Jie,[link widoczny dla zalogowanych], GANNAN. Anti-resonance theory in the application of vibration technology. Northeastern University, Natural Science, 1994; 15 (4); 363 - 369HeJ, LiY. LocalstructuralrilodificationfortheRelocationofResonancesandAntiresonancesofavi. bratorysystem. IIl ~ Proc. oftheICVE94Beijing. 919 - 924GeneHGolub, C} mrlesF, VanLoan with, Tangqing Rong, Deng Jianxin, etc. Translation Matrix. Dalian: Dalian University of Technology Press, * 1988 Yanbao Yong, Cheng Ke Mao, Wang ed. Eigenvalues ​​and Eigenvectors library program. Long copy; National Defense University Press, 1990SensitivityAnalysisofStructuralAnti-ResonanceZhangJun (ShahaiMarineDieselEngineResearchlnst ~ uteShahghai, 200011) FangXiangming (NationalKeyLab-ofVibration, Shock & Noise, ShanghaiJiaotongUniversityShghai. 200030) Ab ~ | rac | Thispaperintroducesheco ~ cepfof ~ ntl-resOnancesensltJvi ~ yapresentaam ~ ethodforanalysingtheanti · reoori ~ ncesensitivity. Italsogivesaptocedttreofatructuraldynamicoptimizationbasedonthemethod. ThemethodcIheusedtoreducethelocalvibrationofastructurebyshittinganti. res ~-nan. efreqt ~ enclestodesiredvalues. Twoexamplesarepeovidedtoindicatethefeasibilityofthetechniques. Keywordslami-resonance} sensitivityfstructuraldynamicimodificationfmodalanalysis, optimi ∞ tnmuthod who first Bian Zhang M, Shi hardware engineering, born in 1970.

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