本文關(guān)鍵詞：隨機(jī)波浪下ROV纜索動(dòng)力響應(yīng)無(wú)因次分析　出處：《艦船科學(xué)技術(shù)》2016年15期 　論文類(lèi)型：期刊論文

  更多相關(guān)文章： 纜索 動(dòng)力響應(yīng) 無(wú)因次 隨機(jī)波浪

【摘要】：建立ROV作業(yè)系統(tǒng)垂向一維動(dòng)力學(xué)模型,研究隨機(jī)波浪激勵(lì)下的動(dòng)態(tài)響應(yīng)。利用振動(dòng)理論對(duì)方程無(wú)因次處理,得到阻尼比和頻率比與響應(yīng)關(guān)系的微分方程。采用雙參數(shù)的PM波譜作為波浪函數(shù),并對(duì)其無(wú)因次化。運(yùn)用龍格庫(kù)塔法對(duì)隨機(jī)波浪和運(yùn)動(dòng)方程進(jìn)行求解,得到纜索最大張力與各參數(shù)的關(guān)系,并分析纜索出現(xiàn)松弛的情況,并與諧波激勵(lì)的響應(yīng)作對(duì)比。結(jié)果表明,隨機(jī)激勵(lì)下,纜索的最大張力在頻域出現(xiàn)多個(gè)峰值,在頻率很大的范圍內(nèi)保持較大的張力,但峰值張力小于諧波激勵(lì)的峰值。
[Abstract]:The vertical one-dimensional dynamic model of ROV operating system is established to study the dynamic response under random wave excitation. The equation is treated dimensionless by vibration theory. The differential equation of the relation between damping ratio and frequency ratio and response is obtained. The two-parameter PM spectrum is used as wave function, and the dimensionless wave spectrum is dimensionless. The Runge-Kutta method is used to solve the stochastic wave and motion equations. The relationship between the maximum tension of the cable and the parameters is obtained, and the relaxation of the cable is analyzed and compared with the response of harmonic excitation. The results show that the maximum tension of the cable appears multiple peaks in frequency domain under random excitation. A large tension is maintained in a wide range of frequencies, but the peak tension is smaller than that of harmonic excitation.
【作者單位】： 上海交通大學(xué)海洋工程國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51279107)
【分類(lèi)號(hào)】：U674.941
【正文快照】： 隨著海洋資源開(kāi)發(fā)和海洋科學(xué)的不斷發(fā)展,深海無(wú)人遙控潛水器(ROV)的應(yīng)用越來(lái)越廣泛,在深海作業(yè)過(guò)程中由于纜索斷裂導(dǎo)致ROV丟失的現(xiàn)象時(shí)有發(fā)生。母船隨海面波浪做升沉運(yùn)動(dòng),在一定的海況條件下,導(dǎo)致纜索張緊松弛狀態(tài)交替出現(xiàn),從而產(chǎn)生瞬時(shí)張力過(guò)大的情況,因而分析導(dǎo)致纜索張力過(guò)

【相似文獻(xiàn)】

相關(guān)期刊論文 前1條

1 趙珂;李茂華;鄭建麗;田冠楠;;基于波浪譜的三維隨機(jī)波浪數(shù)值模擬及仿真[J];艦船科學(xué)技術(shù);2014年02期

，

本文編號(hào)：1357467