本文關(guān)鍵詞：基于顆粒阻尼的封閉空腔場(chǎng)點(diǎn)降噪研究　出處：《華中科技大學(xué)學(xué)報(bào)(自然科學(xué)版)》2016年06期 　論文類型：期刊論文

  更多相關(guān)文章： 顆粒阻尼 封閉空腔 場(chǎng)點(diǎn)聲壓 降噪 板件貢獻(xiàn)量

【摘要】：提出應(yīng)用顆粒阻尼進(jìn)行封閉空腔目標(biāo)場(chǎng)點(diǎn)的降噪處理的方法,對(duì)薄鋼板焊接而成的形似乘用車(chē)的封閉空腔進(jìn)行板件貢獻(xiàn)量分析,找到了對(duì)空腔內(nèi)目標(biāo)場(chǎng)點(diǎn)的峰值聲壓貢獻(xiàn)量最大的板件,并通過(guò)粘貼某型顆粒阻尼器的方法對(duì)目標(biāo)場(chǎng)點(diǎn)的聲壓進(jìn)行了優(yōu)化.對(duì)顆粒阻尼器粘貼在封閉空腔不同位置的目標(biāo)場(chǎng)點(diǎn)聲壓進(jìn)行實(shí)驗(yàn)比較,驗(yàn)證了板件貢獻(xiàn)量分析的正確性;對(duì)封閉空腔上添加顆粒阻尼器容器、與顆粒阻尼器質(zhì)量相同的附加質(zhì)量和顆粒阻尼器三種情況的場(chǎng)點(diǎn)聲壓進(jìn)行實(shí)驗(yàn)對(duì)比,并分析了顆粒阻尼對(duì)封閉空腔內(nèi)目標(biāo)場(chǎng)點(diǎn)聲壓的影響;最后通過(guò)實(shí)驗(yàn)與仿真數(shù)據(jù)對(duì)比的方法,驗(yàn)證了顆粒阻尼器的阻尼損耗因子在仿真計(jì)算中的應(yīng)用方法.
[Abstract]:The application of particle damping method for noise reduction of closed cavity targets points, closed cavity into the shape of passenger cars on thin steel plate welding panelcontributionanalysis, found the plate peak pressure contribution on the field goal in the cavity of the largest, and by sticking method of a particle damper on the target the pressure field is optimized. The particle damper paste experiment in the closed cavity in different position of the target field point pressure comparison, verify the panel contribution analysis is correct; the experiment field of particle damping and added mass enclosed cavity add particle damper container, with the same quality of the particle damper in three cases the sound pressure, and analyzed the influence of particle damping on closed cavity target farfield pressure; finally through the comparison experiment and simulation data, verify the particles The application method of damping loss factor of damper in simulation calculation.
【作者單位】： 武漢科技大學(xué)汽車(chē)與交通工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51105283)
【分類號(hào)】：TB535
【正文快照】： 黏彈性阻尼材料常被用來(lái)抑制車(chē)身薄壁件的振動(dòng),進(jìn)而使車(chē)內(nèi)的噪聲得到控制.國(guó)內(nèi)汽車(chē)工業(yè)常用瀝青等復(fù)合材料,但瀝青材料的缺點(diǎn)是其阻尼特性隨溫度的變化較大、穩(wěn)定性較差、在較高溫度時(shí)釋放有害氣體等[1].然而顆粒阻尼技術(shù)解決了這些問(wèn)題,它具有對(duì)結(jié)構(gòu)剛度影響很小,幾乎不增加，

本文編號(hào)：1339420