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plastic parameter
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  塑性参数
     In this paper,a modified plastic node method is developed forelasto-plastic analysis. By assuming that the plastic flow rule is satisfied onlyat the element node and by using nodal plastic parameter Δλ to describe theinside plastic strain field of an element,we have derived a new nonlinearfinite element formula from the variational principle,while retaining thegood calculating efficiency of the plastic node method.
     提出了修正塑性节点法,即把在单元域内满足的塑性流动法则放松为仅在单元节点上成立,采用节点处的塑性参数△λ来构造出单元内部的塑性应变场,通过变分原理推导了非线性有限元公式.
短句来源
     In this method,the plastic deformations inside theelements are considered by taking an additional variable fieldλ(plastic parameter)which is associated with the nodal forces and the nodal plastic displacementswhich are assuming to be satisfying the law of plastic flow.
     在该方法中单元内部的塑性应变场通过引入附加塑性参数场λ来表示。 该λ场由塑性流动定律与节点力和节点塑性位移建立联系。
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  “plastic parameter”译为未确定词的双语例句
     >Mg>Zr; Zr has a significant influence on the Cu plays a important role in influencing anisotropic plastic parameter(r) and Cu, Mg, Si, Zr have little influence on the strain-hardening exponent(n).
     1.Cu、Mg、Si、Zr对合金强度影响由大到小的顺序是:Si、Cu、Mg、Zr,对σ_(0.2)/σ_b影响最大的是Zr,对r值影响最大的是Cu,Cu、Mg、Si、Zr对n值影响不大。
短句来源
     6. The of the optimized alloy is smaller than American AA6010 by 20%, strain-hardening exponent(n) of the optimized alloy is the same as American AA6010, anisotropic plastic parameter(r) of the optimized alloy is higher than American AA6010 by 4.3%, tensile elongation of the optimized alloy is higher than American AA6010 by 8.3%, So the optimized alloy has better formability than American AA6010 in T4 temple.
     6.合金T_4状态下与6010的成形性能指标合金相比,σ_(0.2)/σ_b小了20%,n值相等,r值大了4.3%,δ大了8.3%,T_4综合成形性能优于6010合金T_4综合成形性能。
短句来源
     Flowing parameter and plastic parameter and sinking rate and transport parameter and this mine transport system on the high density slurry were experimented and analyzed.
     对高浓度输送过程中充填料浆的流动性参数、流变参数、沉降速度、输送参数与矿山输送系统进行系统测试和分析,介绍了使用化学输送剂实现高浓度输送的原理和方法,并在试验中对管路压力进行测试和分析。
短句来源
     Second, the visco plastic parameter η 3 is deducted by measured displacements. Third, the results are obtained from the example. The information of theory has been prepared for the underground construction.
     本文分三部分 ,第一部分是流变模型有限元分析部分 ,第二部分为用实测位移反推粘塑性流变参数η3 ,第三部分为数例和成果分析 ,从而完成了地下工程信息化施工的理论准备
短句来源
  相似匹配句对
     PID Parameter Adjustment Applied to the Plastic
     PID参数调节在塑料挤出机中的应用
短句来源
     Effects of Milling Parameter on the Properties of Wood-Plastic Composite
     混炼工艺参数对木/塑复合材料性能的影响
短句来源
     estimation of its parameter;
     评定运动模糊的参数;
短句来源
     PLASTIC FINISHING
     塑料涂装
短句来源
     On Plastic Ability
     “造型能力”简论
短句来源
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  plastic parameter
The growth rates were analyzed using the linear elastic parameter ΔK and the elastic-plastic parameter ΔJ.
      
The hardening parameters and the plastic parameter are also approximated by constants within each subregion.
      


A linearized method for scale value of platinum resistance thermometer is described. The circuit is simple and the method is more accurate. In the range of 100—400℃ and 300—600℃, the errors of the linearization of scale value are less than 0.02%.The circuit for linearization can be applied in the accurate temperature program-control or fixed-point control after it is matched with an electric or manual resistance box. Some practical problems are also discussed.The circuit provided here has been successfully applied...

A linearized method for scale value of platinum resistance thermometer is described. The circuit is simple and the method is more accurate. In the range of 100—400℃ and 300—600℃, the errors of the linearization of scale value are less than 0.02%.The circuit for linearization can be applied in the accurate temperature program-control or fixed-point control after it is matched with an electric or manual resistance box. Some practical problems are also discussed.The circuit provided here has been successfully applied in the temperature control of the measuring instruments of plastic parameter.

本文叙述一种铂电阻温度计的标定值线性化的方法,其精度高且电路简单。在100~400℃及300~600℃范围内标定值的线性化偏差小于0.02%。线性化所用的电路与电控的或手拨的数字电阻箱匹配之后,可用于程序的或定点的精密温度控制。文中还讨论了一些实用中的问题。文中的电路已经成功地用手塑料参数测试仪的精密温度控制。

In this paper,the simplex method in nonlinear programming was applied to solvethe problems of structural identification and a modified method has been presented because of a convergence trouble of the simplex method commonly used (the Nelder Mead version) in some cases.The centre of the modified method is that an algorithm step for the reflection of the simplex is introduced to overcome the above difficulty.A typical example has been constructed in illustration of that trouble that the method commonly used will...

In this paper,the simplex method in nonlinear programming was applied to solvethe problems of structural identification and a modified method has been presented because of a convergence trouble of the simplex method commonly used (the Nelder Mead version) in some cases.The centre of the modified method is that an algorithm step for the reflection of the simplex is introduced to overcome the above difficulty.A typical example has been constructed in illustration of that trouble that the method commonly used will make the process of searching the optimum not converge to a minimum and not end or give out a false optimum according to the different type of computational ending conditions used. An Identification study of elasto-plastic parameters was put in practice for a frame building in Tianjin which underwent damage during the Tangshan earthquake.

本文将非线性规划技术中的单纯形法应用于结构识别问题,并根据一个普通单纯形法在使用中存在的问题,提出了一个修正算法。修正算法的中心是引入一个反射单纯形的算法步骤,以克服普通算法在某些情况下会造成的一种不收敛到极小点的困难。文中对一座遭受地震破坏的框架建筑作了弹塑性参数的具体识别研究。

Based on the summary and analyses of water inflow through basements in some coal fields in North China, the advancing process of excavation on a complete basement is modelled using elasto-plastic finite element method. The elastic and plastic parameters of the rocks in coal bearing and surrounding strata are gained or computed from those of rock mechanical experiments, and the excavating and filling processes are reflected in the modelling.Comparing with the in-situ measurements in a service roadway...

Based on the summary and analyses of water inflow through basements in some coal fields in North China, the advancing process of excavation on a complete basement is modelled using elasto-plastic finite element method. The elastic and plastic parameters of the rocks in coal bearing and surrounding strata are gained or computed from those of rock mechanical experiments, and the excavating and filling processes are reflected in the modelling.Comparing with the in-situ measurements in a service roadway under an excavated coal layer in Jiaozuo, Henan province, the modelling computation results are analy- zed. The computed distribution of plastical areas is in relatively good accordance with that of water injected areas, these areas are considered here as water inflowable regions of rocks and water inflowing happens when these areas connecting pressured underground water bearing rock bodies with excavating spaces. The computed relative displacements between the roof and bottom surfaces of the service roadway during excavation well match the measured data. Combining the distributions of principal stresses around the excavating space and deformations along horizontal lines with different depths under the coal layer, we can identify four advancing regions of deformation in the basement during coal excavation, i. e., nomal region before excavation, intensely compressing and compacting region before excavation, less compressing and expanding region under and after excavation, and normal region after excavation. The middle two regions are in more danger of water inflow.The model and its results can be applied to some other coal fields in North China.

本文在总结分析我国华北一些煤矿底板突水的现象和普遍规律的基础上,运用弹塑性有限元方法模拟了河南焦作九里山煤矿某采区实际开采过程中完整底板内注水区(对应于塑性变形的岩石)范围和某深度处岩石的变形以及它们的变化,模拟计算结果与实测资料基本吻合,初步分析还可得出一些有关采动过程中底板突水规律的认识。

 
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