【摘 要】
：
When the electric field caused by voltage reaches a certain level,the charge on the compliant electrodes will not increase owing to the polarization saturation,which would limit the deformation of the dielectric elastomer.Some experiments show that temper
【机 构】
：
Department of Astronautical Science and Mechanics,Harbin Institute of Technology,Harbin 150001,China
论文部分内容阅读
When the electric field caused by voltage reaches a certain level,the charge on the compliant electrodes will not increase owing to the polarization saturation,which would limit the deformation of the dielectric elastomer.Some experiments show that temperature also has a significant effect on the deformation of dielectric elastomer.In this work,a free energy model coupling temperature and polarization saturation is developed to characterize the thermoelectromechanical instability of dielectric elastomer.The results reveal that both the polarization saturation parameters and electric field have a significant influence on the actuation ability of the dielectric elastomer,and the increase of temperature enhances thermoelectrome-chanical stability.It is hoped that this work could guide the development of dielectric elastomer materials and application devices operating in variable temperatures.
其他文献
Decoding genetic information is crucial for gene therapy and cancer diagnosis,which has attracted growing interest in the field of clinical medicine and life science.In this study,we conducted a comprehensive exploration to obtain the detection mechanism
Poroelasticity of cytoplasm is a rate-and size-dependent biphasic material behavior that reflects the normal activities and pathological states of cells,mainly caused by the migration of fluid molecules and the deformation of porous solid skeleton(protein
In this paper,we derive mathematical formulas for the skin friction coefficient in wall-bounded turbulence based on the Reynolds averaged streamwise momentum equation and the total stress.Specifically,with a theoretical or empirical relation of the total
Nature and technology often adopt structures that can be described as tubular helical assemblies.However,the role and mechanisms of these structures remain elusive.In this paper,we study the mechanical response under compression and extension of a tubular
针对过冷云分布的探测,设计了一种近红外机载偏振同轴微脉冲激光雷达系统.该系统采用波长1550 nm激光激励,可有效减少云中小尺度气溶胶粒子的消光,从而提高大尺度云粒子的探测距离和效率.通过非球形粒子的退偏比来甄别云粒子相态,同时提出了云含水量的激光雷达反演算法,并结合机载温度数据和对流层特征,反演过冷云的空间分布.基于标准大气模型和机载仪器的云粒子谱数据,仿真分析了不同激励波长偏振微脉冲激光雷达在两种对流层云中的探测性能,结果表明下层云中的探测距离约为1.1 km,而上层云中的探测距离可达1.5 km.
As originally proposed by professor Alberto Corigliano of Politecnico di Milano and professor Jizeng Wang of Lan-zhou University,the Chinese Society of Theoretical and Applied Mechanics(CSTAM)and the Italian Association for Theoretical and Applied Mechani
研究了玻色-爱因斯坦凝聚孤子在双势作用下的动力学演化,基于数值模拟详细讨论了双势阱、双势垒和混合势的相关参数对玻色-爱因斯坦凝聚孤子演化的影响.提出了一种操控玻色-爱因斯坦凝聚孤子位置的方法,并研究了双孤子在双势阱和双势垒中的演化行为.结果表明:单孤子会在不同参数的双势作用下表现出摆动、遂穿和被势阱俘获等不同的演化行为;控制双势的参数达到合适的数值时,双孤子则会展现出被势阱吸引和被势垒排斥的现象.
Nonlinear vibration absorbers have been widely used for vibration suppression of elastic structures,but they were usually placed within the structures.However,designing such a vibration damping device within an engineering structure is pos-sibly difficult
Majority of cancer patients die from cancer metastases.The physical stimulation produced by microenvironment regulates invasive behavior of cancer cells.Blood vessel is one of the“pathways”for cancer to metastasize,in which tumor cells need to cross the e
Current constitutive theories face challenges when predicting the extremely large deformation and fracture of hydrogels,which calls for the demands to reveal the fundamental mechanism of the various mechanical behaviors of hydrogels from bottom up.Proper