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the sound insulation     
相关语句
  隔声分析
     The Sound Insulation Analysis and Test Methods for Double Wall of Airplane Cabin
     民机座舱双壁结构的隔声分析与隔声试验方法
短句来源
  隔声性能
     STUDY ON THE SOUND INSULATION PROPERTY OF POLYMER COMPOSITES
     聚合物基复合材料隔声性能的研究
短句来源
     Study on the Sound Insulation Property of PVC-Composites
     聚氯乙烯基复合材料的隔声性能研究
短句来源
     An Analysis of the Sound Insulation for Compound Panel
     复合板隔声性能分析
短句来源
     The compressive property and energy absorption ratio of foamed Al 7Si 0.45Mg alloy and the permeability of compressed foamed Al 7Si 0.45Mg alloy in air are studied. The coefficient of the sound absorption and the sound insulation of compressed foamed Al alloy in air are measured. The influence of original porosity of foamed alloy on the above mentioned properties is discussed.
     研究了泡沫Al7Si0.45Mg合金的压缩性能、吸能率,压缩后试样在空气中的流通能力,测试了其吸声和隔声性能,讨论了试样原始孔隙率对上述性能的影响,以及它们之间的相互关系.
短句来源
     Based on the analysis, a relevant mathematical model was then established, and the sound insulation properties of the glass bead-filled polyethylene composite were finally predicted.
     在此基础上 ,建立了相关的数学模型 ,并预测了玻璃微珠填充聚乙烯复合材料的隔声性能 .
短句来源
更多       
  对隔声
     Mainly discussed about the established of the business car model with the theory statistical energy analysis (SEA), in the noise control the sound insulation and absorption are selected with mechanical engineering optimization design. The results of simulations evidence that the selected noise control method is feasible.
     根据统计能量分析的方法,建立国内某种商务车的SEA模型,在其室内噪声的控制和预测中,应用优化设计方法对隔声与吸声方法的使用进行了优化设计,SEA仿真结果表明,其降噪后的结果与实际中有着良好的一致性,所选择的降噪方法是可行的。
短句来源
     The sound insulation performance of decoupling meterial is studied in this paper. The formula of input impedance,homology coefficient and insertion penalty of the decoupling material with multiple layer architecture is provided by using the method of transitive matrix.
     本文主要对隔声去耦材料的隔声性能进行研究,用传递矩阵方法推导了多层结构去耦材料的输入阻抗、相应的透射系数和插入损失的公式,对隔声去耦材料的插入损失频谱进行数值分析与仿真计算。
短句来源
     In order to study the effect of the reinforced material in the composites on the sound insulation property of the soundproof composites,the fabric /PVC composites are prepared,using PVC resin which is usually used in soundproof materials as matrix,choosing the glass fabric,the PET fabric as reinforced materials.
     为了研究隔声复合材料中增强材料对隔声性能的影响,以常用的聚氯乙烯树脂为基体,选用玻璃纤维织物、涤纶织物等为增强材料,制备多种织物/聚氯乙烯基复合材料。
短句来源
  方法对隔声
     Mainly discussed about the established of the business car model with the theory statistical energy analysis (SEA), in the noise control the sound insulation and absorption are selected with mechanical engineering optimization design. The results of simulations evidence that the selected noise control method is feasible.
     根据统计能量分析的方法,建立国内某种商务车的SEA模型,在其室内噪声的控制和预测中,应用优化设计方法对隔声与吸声方法的使用进行了优化设计,SEA仿真结果表明,其降噪后的结果与实际中有着良好的一致性,所选择的降噪方法是可行的。
短句来源

 

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      the sound insulation
    The sound insulation between the dwelling places and the sound producers is sometimes very poor.
          
    The sound insulation and the fire insulation have also to be considered, when designing structures.
          
    The measurement of the sound insulation of inner and outer walls requires special loudspeakers, amplifiers and generators.
          
    Surprisingly, no significant scientific articles had been published concerning the sound insulation of doors.
          
    Remove the motor base assembly, partition plate assembly and the sound insulation board.
          
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    The sound insulation performance of a light panel-stud partition is greatly affected by its construction details. Since the construction parameters are very complicated, it could hardly be predicted by calculation now if it is not impossible.After a series of experimental works in our sound insulation test facility, the following results are esteemed valuable for practice. (1) T. L. for steel stud partition is higher than wood stud by 4 dB in average. It is recommanded that the depth and spacing...

    The sound insulation performance of a light panel-stud partition is greatly affected by its construction details. Since the construction parameters are very complicated, it could hardly be predicted by calculation now if it is not impossible.After a series of experimental works in our sound insulation test facility, the following results are esteemed valuable for practice. (1) T. L. for steel stud partition is higher than wood stud by 4 dB in average. It is recommanded that the depth and spacing of stud should not be less than 7 cm and 60 cm respectively. (2) Addition of the first extra leaf to a two-leaf panel partition would improve the T. L. by 5-6 dB, but for the another extra leaf only 2-4 dB. (3) Sound deadening fiber board strips between the stud and the panel on both side would reduce the sound bridge effect, and then an improvement of T. L. of 3-6 dB for steel stud partition is achieved, 6-9 dB for wood stud partition. (4) Acoustical fiber bat in cavity would improve the T. L. by 5 dB for steel stud partition, and 8 dB for wood stud partition. While only a small improvement, approximately 2 dB per leaf, could be gained by adding an extra leaf. (5)Since the effects of above measures are not simply additive, one might choose the propriety of construction carefully if a high T. L. partition is reqnired.

    轻板隔墙的隔声性能在很大程度上取决于构造上的措施。由于构造参数的复杂性,目下还难以作出精确计算。本实验室对一系列构造方式进行了实验研究。得出一些有实用参考价值的结论。1.钢墙筋隔墙比木墙筋的一般要高出4分贝。墙筋的深度和间距分别不宜小于7厘米和60厘米。2.双层轻板隔墙上外加一层板可有5—6分贝之改善。但再加一层板只有增加2—4分贝。3.墙筋和墙板之间加上软质纤维板作垫层可减少声桥的影响,对钢墙筋隔墙可有3—6分贝之提高,对木墙筋隔墙则可有6—9分贝。4.空腔内填放纤维性吸声材料后,对钢墙筋隔墙可有5分贝之改进,木墙筋隔墙则古8分贝。此时,增加一层板仅有较小之提高,约2分贝。5.以上措施的效果不能简单地线性相加。因此对于要求高隔声量之隔墙,要仔细地选择适当的构造方式。

    This article offers an objection to the traditional calculating method for the sound insulation of the single enclosure structure of ships, and probes the pending problems. Forty-five marine engines of different types are used in the calculation of the degree of sound insulation of steel plates with a thickness of 1-8mm; the influences of various noises of the spectrum on the effect of sound insulation are counted and analyzed; two practical formulas (shown by a single peak) for...

    This article offers an objection to the traditional calculating method for the sound insulation of the single enclosure structure of ships, and probes the pending problems. Forty-five marine engines of different types are used in the calculation of the degree of sound insulation of steel plates with a thickness of 1-8mm; the influences of various noises of the spectrum on the effect of sound insulation are counted and analyzed; two practical formulas (shown by a single peak) for calculating the degree of sound insulation of structures are regressive, and these formulas are applicabel whether there is corresponding effect or not. A great many of the calculations indicate that the calculating formulas and the value TL_(500) in the reference [1] and [2] are responsible for a great error in the calculation of engineering design. It is proved that the calculatieg formulas presented in this article are also applicable to such materials as aluminium plates, plywood and glass. This article ends by illustrating the application of the formulas.

    本文对船舶单层围护结构的传统隔声计算方法提出异议,对尚未妥善解决的问题进行了探讨。用1~8mm厚的钢板对45台不同类型的船用柴油机作了隔声量计算,统计分析了不同的噪声源频谱特性对隔声效果的影响,回归出有吻合效应及无吻合效应场合计算构件隔声最的实用公式(单值表示)。大量计算表明:文献[1]、[2]的计算公式及TL500值在工程设计上的计算误差较大。计算亦表明:本文提出的计算公式对铝板、胶合板和玻璃等船用材料亦是适用的。文章最后举以实例说明公式的应用。

    The plasma spraying techniques, which have been widely used in many products design, is a new kind of technology for hardening and protecting parts surface. But the environment pollution caused by the noise from the process of plasma spraying is a much concerned matter. The following results were obtained by measuring the spraying equipment and noise from the process of spraying. The noise produced by monomic work gas was quite different from the noise produced by diatomic work gas, the noise intensity were...

    The plasma spraying techniques, which have been widely used in many products design, is a new kind of technology for hardening and protecting parts surface. But the environment pollution caused by the noise from the process of plasma spraying is a much concerned matter. The following results were obtained by measuring the spraying equipment and noise from the process of spraying. The noise produced by monomic work gas was quite different from the noise produced by diatomic work gas, the noise intensity were less affected by the changes of the work electric current and work air stream quantity. The frequency band of the plasma spraying noise is wider and high frequency noise is warmer. Based on the above results, the sound insulation should be considered as a principle aspects and the sound absorption as an auxiliary aspect in the design of noise control. The practical facts shows that if the suitable materials for sound insulation and sound absorption were chosen, it is possible to meet the requirement of noise standard under the condition of continuously normal work.

    等离子喷涂技术是零件表面强化与防护的新工艺,在许多产品的设计上得到了广泛的应用。但是,在等离子喷涂过程中的噪声对环境的污染是一个值得注意的问题。本文通过在喷涂实验室中对喷涂设备及喷涂过程的噪声进行测量,发现单原子工作气体产生的噪声与双原子工作气体产生的噪声相差很大;然而改变工作电流和工作气流量对喷涂的噪声强度影响不大;喷涂噪声的频带较宽,高频噪声比较强热。因此,在降低噪声的处理上,应以隔声为主,吸声为辅的原则进行设计。实践证明,只要隔声和吸声的材料及结构设计选择合理,就可以达到连续正常工作的允许噪声标准。

     
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