国产bbaaaaa片,成年美女黄网站色视频免费,成年黄大片,а天堂中文最新一区二区三区,成人精品视频一区二区三区尤物

首頁(yè)> 中文期刊> 《機(jī)械工程材料》 >磁場(chǎng)作用下羰基鐵粉磁流變液的剪切特性

磁場(chǎng)作用下羰基鐵粉磁流變液的剪切特性

     
  • 摘要
  • 著錄項(xiàng)
  • 相似文獻(xiàn)
  • 相關(guān)主題

摘要

使用流變儀在不同磁感應(yīng)強(qiáng)度(0~0．86 T)、不同剪切速率(100~1000 s－1)下測(cè)得羰基鐵粉磁流變液的剪切應(yīng)力和表觀黏度,分析了其剪切性能,并通過(guò)擬合得到了剪切應(yīng)力和磁感應(yīng)強(qiáng)度的定量關(guān)系.結(jié)果表明：在相同的磁感應(yīng)強(qiáng)度下,隨著剪切速率的增加,該磁流變液的剪切應(yīng)力緩慢增大,表觀黏度成指數(shù)下降；該磁流變液的黏度變化符合 Herschel-Bulkley 模型,磁感應(yīng)強(qiáng)度越大,其剪切稀化效應(yīng)越明顯；當(dāng)磁感應(yīng)強(qiáng)度分別在0~0．23 T,0．45~0．65 T 范圍內(nèi)時(shí),剪切應(yīng)力和磁感應(yīng)強(qiáng)度之間均存在指數(shù)關(guān)系,指數(shù)值分別為1．50,0．57,當(dāng)磁感應(yīng)強(qiáng)度在0．23~0．45 T 范圍內(nèi)時(shí),剪切應(yīng)力隨磁感應(yīng)強(qiáng)度的增加呈線性增大.%The shear stresses and apparent viscosities of the magnetorheological fluid (MRF)of carbonyl iron powder were measured by the rheometer under different magnetic flux densities (0-0.86 T)and different shear rates (100-1 000 s-1 ).The shear performance of the MRF was analyzed and the quantitative relations between shear stress and magnetic flux density were fitted.The results show that the shear stress of the MRF increased slowly but the apparent viscosity decreased exponentially with the increase of the shear rate under the same magnetic flux density.The viscosity change of the MRF coincided well with the Herschel-Bulkley model,meaning that the larger the magnetic flux density,the stronger the shear thinning effect of the MRF.When the magnetic flux densities were in the range of 0-0.23 T and 0.45-0.65 T,the shear stress and magnetic flux density showed an exponential relationship and the index value was 1.50 and 0.57 respectively.While in the range of 0.23-0.45 T,the shear stress increased linearly with the increase of magnetic flux density.

著錄項(xiàng)

相似文獻(xiàn)

  • 中文文獻(xiàn)
  • 外文文獻(xiàn)
  • 專利
獲取原文

客服郵箱：kefu@zhangqiaokeyan.com

京公網(wǎng)安備：11010802029741號(hào) ICP備案號(hào)：京ICP備15016152號(hào)-6 六維聯(lián)合信息科技 (北京) 有限公司?版權(quán)所有

  • 客服微信

  • 服務(wù)號(hào)