准确地分析连续管流体特性对施工作业的成功有着重要意义。为此,以垂直井和水平井注入流体为研究对象,建立了流体特性参数计算模型,分析了连续管流体的特性参数。以Visual Studio 2013为开发平台,自主开发了连续管流体特性参数分析软件...准确地分析连续管流体特性对施工作业的成功有着重要意义。为此,以垂直井和水平井注入流体为研究对象,建立了流体特性参数计算模型,分析了连续管流体的特性参数。以Visual Studio 2013为开发平台,自主开发了连续管流体特性参数分析软件。通过软件计算分析,确定了连续管内和环空流体压力损失大小,流体流速和流态,任意位置压力大小,得出压力变化曲线和排量-泵压流动特征曲线。研究结果为确定合理的泵压、排量和优选连续管提供了依据。展开更多
Carbon nanotube fibers(CNTFs)have many desirable properties such as lightweight,high strength,high conductivity,and long lifetimes.Coiled CNTF is an ideal material for preparing electrochemically driven artificial mu...Carbon nanotube fibers(CNTFs)have many desirable properties such as lightweight,high strength,high conductivity,and long lifetimes.Coiled CNTF is an ideal material for preparing electrochemically driven artificial muscles.While previous studies focused mainly on the actuation performance of artificial muscles made of CNTF,this study focuses on an actuator that mimics human finger movements(flexion).More specifically,the preparation of CNTF muscles were optimized by twisting with weight.Then,actuators are designed and assembled by combining all-solid-state CNTF muscles with polypropylene(PP)sheets.Moreover,a dualelectrode system,which is infiltrated by a gel electrolyte,is built into the muscle actuator.In addition,a robotic gripper is fabricated,which uses these actuators.This study can help improve the design of CNTF-based muscle-actuators and future applications in robotics.展开更多
文摘准确地分析连续管流体特性对施工作业的成功有着重要意义。为此,以垂直井和水平井注入流体为研究对象,建立了流体特性参数计算模型,分析了连续管流体的特性参数。以Visual Studio 2013为开发平台,自主开发了连续管流体特性参数分析软件。通过软件计算分析,确定了连续管内和环空流体压力损失大小,流体流速和流态,任意位置压力大小,得出压力变化曲线和排量-泵压流动特征曲线。研究结果为确定合理的泵压、排量和优选连续管提供了依据。
文摘Carbon nanotube fibers(CNTFs)have many desirable properties such as lightweight,high strength,high conductivity,and long lifetimes.Coiled CNTF is an ideal material for preparing electrochemically driven artificial muscles.While previous studies focused mainly on the actuation performance of artificial muscles made of CNTF,this study focuses on an actuator that mimics human finger movements(flexion).More specifically,the preparation of CNTF muscles were optimized by twisting with weight.Then,actuators are designed and assembled by combining all-solid-state CNTF muscles with polypropylene(PP)sheets.Moreover,a dualelectrode system,which is infiltrated by a gel electrolyte,is built into the muscle actuator.In addition,a robotic gripper is fabricated,which uses these actuators.This study can help improve the design of CNTF-based muscle-actuators and future applications in robotics.
