查询词典 extrusion

The dough-elasticity of the blending flour of corn flour , extrusion corn flour and wheat flour are better under appropriate water addition.

玉米粉、膨化玉米粉、小麦粉按一定比例混合，在加水量适宜的情况下，可形成面团。

This paper analyzes relationship among the design of plastic products, raw material constitution and fluid channel design of extrusion die and elucidates the importance of their a-greements each other.

论述了塑料制品设计、原料配方、设备选用与口模流道设计间的关系，阐明了它们之间良好协调的重要性；并结合塑料熔体流变理论和实践经验，以180装饰壁板为例，分析讨论了此类异型材口模流道设计的思路和方法

The distributions of velocity, velocity gradient, shear stress, clongation stress, first normal stress difference and pressure of the flow of a power-law fluid in the profile die were analyzed. It indicates that for a power-law fluid only after a few iterations a good convergence can be reached, even though in the case of high extrusion velocity.

详细分析了聚合物口模挤出三维计算机模拟研究中的若干关键技术问题，如对异型材结构特点的分析、边界条件的确定、初始速度场的自动生成、罚数的求取、粘弹性流动模拟中的高We数问题、三维挤出胀大的自由界面更新等。

Qinhuangdao 066004, P.R. China）Abstract: On basis of the theory of metal plastic fluid and research of die cavity on non-axis-symmetry extrusion of special-shaped products, in virtue of mathematical research results of the conformal mapping theory,by using method of normal convergence, numerical value analysis of mapping function was built.

摘 要：针对非轴对称金属异型挤压塑性流动及模腔研究的理论课题，借助于近代共形映射数学理论研究成果，利用法线收敛法，建立了映射函数解析方法。

The distributions of velocity, velocity gradient, shear stress, clongation stress, first normal stress difference and pressure of the flow of a power-law fluid in the profile die were analyzed. It indicates that for a power-law fluid only after a few iterations a good convergence can be reached, even though in the case of high extrusion velocity.

本文分析了幂律流体在异型材挤出口模内的速度分布、速度梯度分布、剪切应力分布、拉伸应力分布、第一法向应力差分布和压力场，研究表明采用幂律流体模型，即使在挤出速度非常大的情况下，经过有限次迭代，模拟计算都能够收敛，并得到合理的结果。

Rubber compound ; viscoelastic fluid ; die swell ; entrance pressure drop ; extrusion

混炼胶；粘弹性流体；挤出膨胀；入口压力降；挤出

In this dissertation the"Penalty"finite element method was employed to compute the velocity of the three-dimensional flow of power-law fluid in a profile die. In order to decrease the needed computer memory and raise the stability of numerical simulation, a set of decoupled methods such as PFEM, pseudo-body force method and transformation of momentum equation to the elliptic equation was developed to establish the general finite element equations to compute the distributions of velocity and viscoelastic stress of the three-dimensional viscoelastic flow of the Phan ThienTanner fluid in a profile die. During numerical simulation of the extrudate swell of the PTT fluid, the flow in the die and out of the die was analyzed separately, which demands less computer memory. The key techniques used in numerical simulation of the three-dimensional extrusion from dies such as decision of boundary conditions, creation of initial velocity field, selection of penalty factor, high Weissenberg number problem , regeneration of the free surface were studied in detail.

中文题名聚合物异型材口模挤出三维流动研究副题名外文题名 Study on three-dimensional flow of polymer melts during the process of profile extrusion from dies 论文作者涂志刚导师柳和生包忠诩教授学科专业材料加工工程研究领域\研究方向学位级别博士学位授予单位南昌大学学位授予日期2001 论文页码总数148页关键词挤出成型聚合物材料挤出口模聚合物异型材馆藏号BSLW /2003 /TQ320 /9 本文建立了求解挤出口模内幂律流体流动速度场的通用三维罚有限元模型；对于非线性粘弹性的Phan Thien-Tanner流体，为了降低模拟计算对计算机硬件的要求，并使模拟计算更加稳定，采用了一种去耦算法，包括罚有限元方法、拟体力方法和动量方程的椭圆类方程转化方法，并建立了求解速度场和粘弹性应力场的总体有限元方程；对于PTT流体的挤出胀大问题，提出了挤出胀大熔体口模内外分离模拟法，这样可以显著降低数值模拟对计算机硬件的要求。

Two questions: My son will be 14 months, but always love to hand anything put his mouth to eat, this habit of the old is改不掉 whether calcium, zinc or iron to which trace elements, other aspects of growth and development are normal; another son was born, his right foot eversion palm Doctor said that it is because the fetus in the womb large caused by extrusion, or a full moon after the right foot, but now his right foot palm when learning to walk a bit outside the character, I do not know whether it is normal?

两个问题：宝宝将14个月了，但老是爱将手里的任何东西都放嘴里吃，这习惯老是改不掉（可以肯定不是饥饿造成的）是否缺钙、锌或铁何种微量元素，其它方面生长发育都正常；另宝宝因出生时，右脚掌外翻医生说是由于胎儿大在子宫里受挤压造成，满月后右脚也好了，但现在学走路时右脚掌有点外八字，不知是否正常？

MECC Hydraulic has finished more than 100 sets of piping project as AGC, mill, forge press, blast furnace, grate cooler and extrusion press (cleanness reached to NAS5). Circular filtrated equipments (2500L/min), CCS1 contamination detector and SK2010 hydraulic system data recorder can supply high quality piping project for user.

我们拥有成熟的现场管路安装经验和液压系统循环清洗的专业技能；有德国进口的液压系统检测仪和清洁度在线检测仪、超声波探伤仪和总流量每分钟可达3000l/m的高压清洗循环设备所以我们可以给用户提供达到国际水平的液压系统现场管路安装和循环清洗工作。

The forming process for warm extrusion punch of drilling bit shell was simulated with contact analysis modules in ANSYS.

中文摘要：运用有限元分析软件ANSYS的接触分析，对钎头壳体温挤压凸模进行了数值模拟。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48