structure at a first time; a coherence calculation step S10 for obtaining a change in coherence function by the frequency with the frequency in the horizontal direction and the frequency in the vertical direction as an input; and a natural frequency specifying step S12 for defining the frequency ...
Harmonicsofthesenormalforceswillresonatethenaturalfrequencyresonantmodesof thestatorstructuresoproducingacousticnoise. 这些简正力量泛音将共鸣定子结构的自然频率共振方式如此导致音响噪声。 bbs.jysq.net 8. Aspreviouslymentioned,thenaturalfrequencyofvibrationofatightcabledependson thetensionpresentinthecable. ...
Shape optimization of space frame structures for maximizing a natural frequency This paper presents a non-parametric, or a node-based, shape optimization method for designing the optimal geometry of a space frame structure for a natura... Takashi,MORIMOTO,Masatoshi,... - 《Transactions of the Jsm...
However, if the response of a structure at a frequency in the region of a resonance is required, which would be the case if the amplitude or dynamic stress levels at a resonance were required for example, damping effects must be included in the analysis. Coulomb and hysteretic damping can ...
natural frequency (redirected fromNatural frequencies) Also found in:Thesaurus,Medical,Encyclopedia. n (General Physics)physicsthe frequency at which a system vibrates when set in free vibration. Compareforcing frequency Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © Harper...
The graph shows that as mandible size increases so does the likelihood of predation. The curve is the fitted frequency from the GLM with dot size representing numbers (1–6) of individualG. cornutus(i.e., larger dots = more beetles). Inset shows anA. venatorabout to attack a maleG. cor...
The results from the elasto-plastic finite element analysis show that the natural frequency of the structure is increased as the thickness of the adhesive layer increased. The low-order vibration is mainly shown as plain round or less pitch vibration mode. The critical load is affected by the ...
So for a simple structure, excited at frequency ω = ωn, the spatial distribution of Im[Yj] yields the mode shape. It is customary to make measurements Yjk so that the relative phase of the Im[Yj] is preserved and so the ‘true’ mode shape may be found. For more complex structures...
Such a methodology allows the optimal parameter modifications to be acquired directly from experimental frequency response functions (FRFs) without the need to construct or update a theoretical model of the post-manufactured structure or to perform time-consuming sample calculations [26]. The receptance...
aThe first-order natural vibration frequency of the model frame in the x-axis is bigger than the one along the y-axis, because the lateral stiffness of the model in the x-axis is higher than the one along the y-axis, due to the span, connection, the special joint structure, and so ...