Based on the heart anatomy and membrane theory, we establish the geometrical parametric model of bioprosthetic heart valve by Pro E to reach the function of the human heart valves. 依据心脏解剖学和薄膜理论,以接近或达到人体天然心瓣的性能为目的,将传统设计理论与现代设计方法相结合,提出构建人工生物心脏瓣膜参数化模型的方法。
Permeation Property of Trace Water in the Chloromethanes through NaA Zeolite Membrane Simulated by Maxwell-Stefan Theory Maxwell-Stefan理论模拟NaA沸石膜分离一氯甲烷中微量水的渗透特性
Membrane Theory for Woven Fabric 织物的膜理论
Base on the mathematic model of load-deflection relationship of the rectangular membrane, micro balloon actuator's theory curve of pressure-deflection has been calculated and plotted. 然后,本文对微气泡致动器的压力-变形关系进行了理论计算和数值仿真。根据矩形薄膜变形的数学模型得出了压力-变形理论曲线。
Study on membrane theory and film-forming drilling fluid 钻井液隔离膜理论与成膜钻井液研究
For stress analysis we have adopted the membrane theory of spherical shells. 我们采用球壳无矩理论来进行应力分析。
Pervaporation membrane reactor THEORY OF PERMEATION 渗透汽化膜反应器
As to the primary B-CS, there are congenital membrane theory and acquired thrombosis theory to illustrate the cause. 对于原发性B-CS的病因又有先天性隔膜形成学说和后天性血栓形成学说。
Cable-Membrane Element Theory for the Analysis of Cable-Stayed Bridge and Its Application 斜拉桥分析的索膜单元理论及其应用
New methods and procedures are given for solving the new problems and the old ones arisen in the plane membrane element theory as well. 对新出现的问题和已往平面膜单元分析理论中各主要技术环节给出了新的解决办法和改进措施。
Membrane theory was used to explain force-stress relationship in center zone of specimen, and a simplified formula that could be used to calculate creep stress of center point was deduced; 利用压力容器薄膜理论之力平衡关系确定特定时间状态下试样中心区域的应力状态,推导小冲杆试样中心点的蠕变应力估算公式;
Membrane theory of limit analysis of conical shells with variable thickness 变厚度锥壳极限分析的薄膜理论
The stresses of 3/ 4 truncated spherical shape radome is analyzed with membrane theory which considers boundary effects and tensile and compress stresses is found. 同时,用薄膜理论加边界效应的分析方法,对风载作用下的3/4截球雷达罩进行了应力分析,确定了拉、压应力范围;
A design oriented structural analysis capability for filament wound composite pressure vessels that utilize membrane theory and classical laminate plate theory is described. The paper focuses on the filament wound composite pressure vessel model definition and associated analytical formulation. 基于薄膜理论和经典层合板理论,导出了纤维缠绕轴对称壳的薄膜内力、应力、应变和位移等计算公式,旨在探讨一种面向纤维缠绕复合材料压力容器设计的结构分析方法。
A method is given to determine the critical wind velocity of membrane structures by using the stability theory. 给出了一种利用稳定性理论确定薄膜结构颤振失稳临界风速的方法。
Three mathematic models of deflection-load for circular flat diaphragm are established based on classical theory of elastic thin plate, von Karman ′ s theory of large deflection and membrane theory. 为描述环状平膜片挠度与载荷的关系,在经典弹性薄板理论、卡尔曼大挠度理论和薄膜理论下为环状平膜片分别建立了3种挠度-载荷数学模型。
On the base of membrane theory, the essence of spinning head and its stresses distribution are analysed. The reason of non equality and the replacement relation between standard elliptical head and spinning elliptical head are also introduced. 运用薄膜理论分析了旋压椭圆形封头的本质及其应力分布,指出了它与标准椭圆形封头不等效的原因及替代关系。
In this paper, the plastic instability of the tubes under axial compressive load was analyzed based on the membrane theory, and an equation to get the critical stress was introduced. 本文运用薄膜理论分析了管坯在轴向力单独作用下的压缩失稳,得出临界轴向压力的计算公式;
Appling of membrane vibration theory for sound absorption study of thin fiber layers 膜振动理论在纤维材料吸声性能研究中的应用
On the basis of Membrane Shell Theory, a finite element modal is set up to calculate natural frequencies and mode shapes of flexspline of a harmonic drive. 基于薄壳理论,首次用8节点曲壳超参数单元的有限元法建立了柔轮筒体的动态计算模型。
The membrane theory for fabric is proposed in order to simulate virtually the deformations of membrane structures of fabric and garments made from fabric, such as stretching and wrinkling of membrane structure and draping and buckling of garments. 为了对织物膜结构和服装进行虚拟模拟,例如膜结构的张紧和褶皱以及服装的悬垂和屈曲,建立了编织物的膜理论。
The equilibrium equation and the compatible equation of membrane roofs are obtained by applying the membrane theory of thin shallow shells in which the geometrical non-linearity of the structure is taken into account. 从弹性薄壳的无矩理论出发,考虑薄膜结构的几何非线性,并引入扁壳理论的假定建立了小垂度薄膜屋盖的平衡方程和相容方程。
Further, the equilibrium equations of the undulatory fin were obtained by applying the membrane theory of thin shells, which took into account the geometrical non-linearity of the structure. 进而,从弹性薄壳理论出发,考虑柔性长鳍结构的几何非线性,并引入无矩薄壳理论的假定,建立了柔性长鳍波动的平衡方程。
It is introduced the research development and basic character of the pneumatic membrane structure at first. The pneumatic membrane structure's no-linear analyse theory is systemically settled. 首先对充气膜结构的研究发展状况及其基本性能特点作了较为详细的介绍,并对充气膜结构的非线性分析理论进行系统化分析。
Analyse membrane performance with thin plate libration theory, establish the nonlinear relation between center flexibility and electrostatic force and the calculation formula of first-order inherent frequency; 用薄板振动理论分析了泵膜的性能,建立了薄膜中心点挠度与静电力的非线性关系以及薄膜一阶固有频率的计算公式;
It is necessary to establish an effective mechanism of membrane fouling theory to develop anti-fouling membranes. 为了开发耐污染的超滤膜,建立有效的膜污染机理理论是非常必要的。
This model is based on membrane theory and establishes the relationship between the imposed force and the induced cell deformation. Different cell properties correspond to different force-deformation curves. 该模型基于膜理论,并能建立操作力与细胞变形之间的关系,不同的细胞特性对应不同的力-变形响应曲线。
First, according to the geometrical structure of the skull and the composition of the cranium, the shell model of the cranium was provided in this paper. And, with the membrane theory, the controlled equations of this model were derived. 其中,根据颅盖骨的几何形状和颅盖骨的结构组成,提出了颅盖骨的壳体模型,并采用无矩假设,得到了该模型的控制方程。
Combining the analysis of energy changes and the structural feature, we proposed a hybrid model based on Helfrich membrane elastic theory and successfully explained our simulation results. 通过分析胶束能量变化和结构特点,提出了基于Helfrich膜弹性理论的杂化模型,并成功解释了模拟结果。