- 摘 要
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(五洲工程設(shè)計研究院, 北京 100053)
[摘要]在我國現(xiàn)行《動力機器基礎(chǔ)設(shè)計規(guī)范》第4章活塞式壓縮機基礎(chǔ)中,雖然給出了動力計算公式,但只用于單一轉(zhuǎn)速(定工作頻率)的壓縮機基礎(chǔ)振動。本文補充了寬頻帶振動臺基礎(chǔ)的最大線位移計算公式,總結(jié)了定、變擾力作用下線位移曲線之間的變換關(guān)系,給出了最大線位移之間以阻尼比表示的關(guān)系式,最后討論了在基礎(chǔ)測試中的應(yīng)用。
[關(guān)鍵詞]動力機器基礎(chǔ); 定頻; 變頻; 最大線位移
中圖分類號:TU435 文獻(xiàn)標(biāo)識碼:A 文章編號:1002-848X(2014)08-0057-04
Calculation of maximum linear displacement for vibrator foundation and application in measure
Wu Bangda
(Wuzhou Engineering Design & Research Institute, Beijing 100053, China)
Abstract: At present, in the chapter 4-reciprocating compressor foundation of Code for design of dynamic machine foundation, there are only calculating formulas applied for single rotational velocity (fixed working frequency). The calculation of maximum linear displacement in the wide frequency zone of vibrator foundation was complemented. The relative transform of linear displacement curves produced by constant force and frequency-dependent force excitation was summarized. The relative equation of the maximum linear displacement curves indicated by damping ratio was presented. At last, the application of measurement to foundation was discussed.
Keywords: dynamic machine foundation; fixed frequency; variable frequency; maximum linear displacement
作者簡介:吳邦達(dá),教授級高級工程師,Email:wubangda@sina.com。
參考文獻(xiàn)
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[3]吳邦達(dá). 用多峰法分析動力基礎(chǔ)地基阻尼比[M]//現(xiàn)代振動與噪聲技術(shù)(第5卷).北京:航空工業(yè)出版社,2007:510-513.
[4]GB 50269—97 地基動力特性測試規(guī)范[S]. 北京:中國計劃出版社,1998:12-15.
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