Under ADAMS environment,it establishes 6-DOF powertrain test rig model and studies the characteristic of force entent and frequency on the condition of sympathetic vibration by means of the performance of ER fluid, it is known that the value of force is small when electric field is strengthened at low rotation speed and the value of force is small when electric field is weakeded at high rotation speed.

利用電流變隔振器的性能国产黄色性爱视频，在ADAMS下建立發(fā)動機(jī)6自由度的仿真模型欧美18XXOO视频在线群，通過頻域分析久久九九99精品网站成年，我們可以發(fā)現(xiàn)，當(dāng)發(fā)動機(jī)在低速運(yùn)轉(zhuǎn)時AAAAAAA级特黄性爱视频，加大電場會使得發(fā)動機(jī)在共振頻率時的幅值較小，而當(dāng)發(fā)動機(jī)在高運(yùn)轉(zhuǎn)時欧美多人囗交A片，情況恰恰相反欧美综合亚洲。

Meanwhile, the paper analyses the influence of vibration occurring in wheel sympathetic vibration and low temperature condition to noise.

同時，分析了車輪共振型振動和低溫環(huán)境等因素對懸架系統(tǒng)中減振器噪聲的影響欧美在线一级片。

Which indicates when the harmonic vibration is equal to the inherent frequencies the displacement became maximum value, it represent the structure occurs sympathetic vibration.

當(dāng)施加在管道結(jié)構(gòu)上激勵的頻率和管道結(jié)構(gòu)的固有頻率相近時可以直接观看的黄片，管道結(jié)構(gòu)系統(tǒng)將發(fā)生共振。

The inherent frequency of the stretcher bed is 2.7 Hz, which is out of the sympathetic vibration area of decubital body. Through adjusting and optimizing the stiffness and damping of vibration reduction equipment, the stretcher bed is more comfortable.

該擔(dān)架床的固有頻率為2.7Hz天堂国产av片，避開了與臥位人體的共振區(qū)8x永久在线视频，并且可通過調(diào)整、優(yōu)化擔(dān)架床減振裝置的剛度和阻尼自拍日韩动漫欧美激情视频网站大全，改善乘員的乘坐舒適性欧美熟妇性生活。

With sympathetic vibration demodulation of the vibration signal of the low-speed, high-load bearing which is realized by means of generalized harmonic wavelet transformation, the impact information of faulty hearing is extracted, which promises a new and effective method for the fault diagnosis of the bearing.

通過廣義諧波小波變換實(shí)現(xiàn)低速重載軸承振動信號的共振解調(diào)日韩精品无码区免费专区，從而提取出故障軸承的低頻沖擊信息，為低速重載軸承的故障診斷提供了一種新的有效方法日韩一区二区黄色视频。

Using the simulation calculation program and adopting the single factor analytic approach, simulation results are gotten and conclusions can be drawn from the simulation results. The parameters have a little influence on vibration of the driver's seat when the frequency of the vibratory force is larger than 20Hz, and the zone that the parameters have great influence on vibration of the driver's seat is nearby the sympathetic vibration frequency of the system which is about lOHz.

利用編制的模擬計(jì)算程序国产三级a专区在线观看播放，采用單因素分析法，分析了各參數(shù)對駕駛員座椅處振動位移的影響：在激振力頻率大于20Hz后狠狠操人人操人人干，各參數(shù)對駕駛員座椅處振動影響較腥张访览吓恕；各參數(shù)對座椅振動影響較大的區(qū)域在激振力頻率為10Hz附近的共振區(qū)人人操人人看人人搞。

Because the portal frame is also used in the rig for bogie fatigue strength testing, in which the imposed load is harmonic, the modal analysis is necessary. The fundamental vibration mode shapes and corresponding frequencies are calculated to validating that the natural frequencies of the structure have enough difference comparing to the load frequency, so sympathetic vibration can be avoided.

由于龍門架還要在疲勞試驗(yàn)臺中用來進(jìn)行轉(zhuǎn)向架的疲勞試驗(yàn)真人版AV黄色网站，因此對龍門架進(jìn)行了模態(tài)分析，計(jì)算龍門架結(jié)構(gòu)的固有頻率和振型国产黄色在线观看q，確保龍門架的固有頻率遠(yuǎn)離轉(zhuǎn)向架疲勞試驗(yàn)的加載頻率大黄色一级片，避免在試驗(yàn)中發(fā)生共振。

Secondly, the cutter of the machine was studied from reducing vibration, emphasis on knives array, homeostasis. To apply "ANSYS"method, At the same time, it was known that inherent frequency of the main axis was so far higher than vibratory frequency, and the machine main axis'rotational speed won't cause sympathetic vibration.

其次，本文從減少振動入手對9LRZ-80型秸稈揉切機(jī)的關(guān)鍵部件切碎器進(jìn)行分析亚洲福利诱惑，著重對動刀片的排列男人天堂.com免费、動平衡等進(jìn)行分析研究，并通過有限元分析91在线网站观看，得到切碎器主軸固有頻率遠(yuǎn)遠(yuǎn)大于機(jī)器振動頻率，機(jī)具的轉(zhuǎn)速不會造成共振的危害人人摸人人摸摸人人操人人操。

The purpose of opening the orifice was to sluice. The influence of fluctuating pressure upon the dam was another problem which was concerned by engineer. The paper analyzed Shuangkoudu masonry arch dam. The result indicated that the dam natural frequencies which consider the dam and the reservoir water interaction have great different from the preponderant frequencies of fluctuating pressure, the dam's first rank of vibration was far away from the high energy region of the fluctuating flow, so the sympathetic vibration would not take place.

壩身開設(shè)孔口主要目的是為了泄洪18岁禁止访问网址，泄洪時水流脈動壓力對壩體結(jié)構(gòu)動的影響是設(shè)計(jì)人員關(guān)心的另一課題，論文針對雙口渡漿砌石拱壩進(jìn)行了分析亚洲Av库在线观看国产，研究結(jié)果表明：在考慮壩體一庫水相互作用時壩體自振頻率和水流脈動壓力的優(yōu)勢頻率相差較大日韩精品视频无播放器在线观看免费，壩體的一階振動遠(yuǎn)離脈動水流的高能量范圍，二者不會發(fā)生共振国产欧美日韩另类一区。

In the part of the vibration experiments and analysis, firstly, used the simple-beam theory to estimate the natural frequency of the beam of the 20-headed computerized embroidery machine.secondly, measured the beam of its low rank natural frequency, the beams horizontal vibrating acceleration amplitude, speed amplitude and the displacement amplitude in different rev and different turn parts. Found that it is sympathetic vibration, which bring on the thread-broken rate rise rapidly. On this base, established the finite element analysis modle of the vibrating beam, and took on hamonic analysis and modal analysis with the mold. The rusult of test and analysis offer the basis for farther improvement of the computerized embroidery machine.

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