|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | APPLICATION OF DOMAIN DECOMPOSITION IN ACOUSTIC AND STRUCTURAL ACOUSTIC ANALYSIS显示文摘常规元素基于方法因为当模特儿的声学的问题由于巨大的计算努力限于低频率的应用程序。为高周波的应用程序,概率的技术例如统计精力分析(海) ,被使用。为中间频率的范围,当前,没有足够、成熟的模拟方法存在。最近,飘动基于的方法被开发了它基于间接 TREFFTZ 来临并且出现了能在中间频率的范围处理问题。在有元素的对比基于方法,没有 discretization 被要求。一足够,然而并非必要,为这个方法的集中的状况是声学的问题领域是凸的。非凸的领域不得不被划分成很多(凸) 子域。在在子域之间的接口,特定的联合条件不得不被强加。考虑二维联合 vibro 声学的问题说明建议波浪的有益的集中率有高精确性的基于的预言技术。结果证明新技术能被使用很好更高的频率。 | PENG Weicai HE Zeng WANG Jiaqiang | 2007 | Chinese Journal of Mechanical Engineering2007，20，6： | 9 |
| 2 | A PREDICTION TECHNIQUE FOR DYNAMIC ANALYSIS OF FLAT PLATES IN MID-FREQUENCY RANGE显示文摘The wave-based method (WBM) has been applied for the prediction of mid-frequency vibrations of flat plates.The scaling factors,Gauss point selection rule and truncation rule are introduced to insure the wave model to converge.Numerical results show that the prediction tech- nique based on WBM is with higher accuracy and smaller computational effort than the one on FEM,which implies that this new technique on WBM can be applied to higher-frequency range. | Weicai Peng Zeng He Peng Li Jiaqiang Wang | 2007 | Acta Mechanica Solida Sinica2007，20，4： | 5 |
| 3 | AN EFFICIENT PREDICTION METHOD FOR THE TWO-DIMENSIONAL COUPLED STRUCTURAL-ACOUSTIC ANALYSIS显示文摘一个波浪数字方法(WNM ) 被建议处理二维的联合结构声学的问题。基于一条间接 Trefftz 途径,排水量和压力反应被一套波浪功能分别地接近,它确切满足管理方程并且独立于联合系统的尺寸。波浪函数包括管理方程和一些特别解决方案函数的同类的部分的准确解决方案,它从外部刺激产生。波浪功能的 weighting 系数能被强制压力近似满足边界条件获得,它被使用加权的剩余明确的表达执行。例子被 WNM 和 BEM 计算。结果显示出那, WNM 能与自由的更少的度达到象 BEM 的一样的精确性和集中。 | Huang Fei He Zeng Peng Weicai | 2006 | Acta Mechanica Solida Sinica2006，19，4： | 2 |
| 4 | Characterization of antioxidant polysaccharides from Auricularia auric- ular using microwave-assisted extraction显示文摘 | Zeng Weicai Zhang Zeng Gao Hong | 2012 | Carbohydrate Polymers2012，89，： | 1 |
| 5 | Antioxidant activity and characterization of antioxidant polysaccharidesfrom pine needle(Cedrus deodara)显示文摘 | Zeng Weicai Zhang Zeng Jia Lirong | 2014 | CarbohydratePolymers2014，108，： | 1 |
| 6 | Characterization of antioxidant polysaccharides from Auricularia auricular using microwave-assisted extraction显示文摘 | ZENG Weicai ZHANG Zeng GAO Hong | 2012 | Carbohydrate Polymers2012，89，2： | 1 |
| 7 | Chemical composition,antimicrobial and antioxidant activities of essential oil from Gnaphlium affine显示文摘 | Zeng Weicai Zhu Ruixue Jia Lirong | | 0，，06： | 1 |
| 8 | Characterization of antioxidant polysaccharides fi'om A uricularia auricular using microwave-assisted extraction 显示文摘 | Zeng WeiCai Zhang Zeng Gao Hong | 2012 | Carbohydrate Polymers2012，89，2： | 1 |
| 9 | Characterization of antioxidant polysaccharides from Auricularia auricular using microwave-assisted extraction显示文摘 | Zeng Weicai Zhang Zeng Gao Hong | 2012 | Carbohydrate Polymers2012，89，2： | 1 |
| 10 | Antibrowning and antimicrobial activities of the water-soluble extract from pine needles of Cedrus deodara显示文摘 | ZENG Weicai JIA Lirong ZHANG Yah | 2011 | Joumat of Food Science2011，76，2： | 1 |
| 11 | Essential oil composition and antibacterial activity of Zanthoxylum bungeanum显示文摘 | ZHU Ruixue ZHONG Kai ZENG Weicai | 2011 | African Journal of Microbiology Research2011，5，： | 1 |
| 12 | Effect of ultrasound on the activity and conformation of a-am- ylase, papain and pepsin 显示文摘 | Yu Zhilong Zeng Weicai Zhang Wenhua | 2014 | Ultrasonics Sonochemis- try2014，21，3： | 1 |
| 13 | Enhancing sound absorption using periodic micro-perforated structure with porous layer显示文摘To get desired sound absorption,we proposed a novel periodic composite structure comprised of micro-perforated plates(MPPs),porous materials and air cavities.The composite structure is then solved using an equivalent circuit model,with equivalent fluid porous model and Maa’s theory.Distributed four-pole elements are used to handle structures which are not compact compared to the sound wavelength.The model procedures are validated and confirmed as satisfactory by published results and finite-element results.Analysis conducted on a single layer shows that,compared with traditional MPP,the porous addition can increase sound absorption in the low-to-medium frequency range;however,the advantage of porous materials in the high-frequency range is lost.Meanwhile,by arranging the porous materials in parallel and controlling their filling ratios,the absorption curve of the composite structure can be tuned.As to periodic composite structures,it is found that the influence of layer number N is mainly in the low-to-medium frequency range.When N varies,the half-absorption bandwidth increases over 40%(≥380 Hz) compared with a single layer.Compared with multi-layered MPPs,N=2 and N=4 produce an increase of bandwidth by 50%(≥400 Hz) and 30%(≥300 Hz) respectively.As N increases,the sound absorption is better but the enhancement weakens as it tends to the limit of the composite structure.These results show the potential enhancements that can be made to the traditional MPP,which can benefit the research on wideband noise reduction in the low-to-medium frequency range. | QIAO Hou HE Zeng ZHAO Chao JIANG Wen PENG Weicai | 2021 | Chinese Journal of Acoustics2021，40，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员