力向量

基于反应力向量灵敏度的模型参数化方法

Parameterization method based on sensitivities of response force vectors

考虑对象运动受限情况，提出一组描述协调任务的广义运动和力向量；

Assuming the object motion is constrained , a group of generalized motion and force vectors are proposed for coordinated task describing .

所有患者均于治疗前后进行躯干及四肢关键肌肌力、ADL（Barthel指数）、XOS综合力向量的评定并予记录。

The data of muscle strength of the key muscles and the trunk ( MMT ), ADL ( Barthel Index ), Colligating force vector quantitie ( CFVQ ) before and after treatment were assessed .

静态法和动态法分别依据结构损伤前后的位移差和模态力向量变化量来构建平衡方程，并采用Moore-Penrose广义逆法求解出结构损伤系数。

Structural displacement-difference and change of modal force between intact and damaged structure are used to construct balance equation in the dynamic and static method . Then method of Moore-Penrose generalized inverse is used to solve damage coefficient .

证明了基于Newmark方法的有效刚度阵的正定性，导出了关于接触力向量的有效柔度方程，从而把动力接触迭代过程凝缩到接触面上，提高了计算的效率；

The effective stiff matrix based on the Newmark schemes proves to be definitely positive . The effective flexibility equation about contact force vector is obtained . Therefore , the dynamic contact iteration process is condensed on possible contact area and the calculation efficiency is improved .

方法：8例年龄在27&73岁的帕金森氏综合征患者接受XOS训练至少1个月，训练前后进行综合力向量测试，并采用能量分析法分析训练前后的效果。

Method : Eight cases with Parkinson ′ s syndrome received " XOS " training at least one month . Their colligating force vector quantities graphics were obtained and analysed by energy analysis skills before and after training .

火箭发动机工作过程中产生的推力向量是一个空间力向量，其实际作用线一般偏离发动机喷管几何理论轴线，这就是发动机的推力偏心。

Rocket motor thrust rector is space vector and the practical thrust functionary line deviates from theory axis of motor nozzle .

该方法首先将反应力向量对单元物理参数作一阶展开，对线性参数系统来说，即为反应力向量灵敏度与单元物理参数的乘积；

With regard to linear parameters system the expansion results in the multiplication of sensitivities of response vectors by element parameters .

其次，在线性参数系统的假定下，对一个单元中包含多个单元物理参数的情况提出了一个简便的求反应力向量灵敏度的算法。

Under the assumption of linear parameters system , the presented method can handle easily the situation when there are several parameters in one element .

正常人和左侧偏瘫患者各区力向量均值在训练后均有明显改善（P<0.05）。

The average force vector quantities in all area were improved after training in the left hemiplegia and the healthy people ( P < 0.05 ) .

针对常见的竖向均布荷载和集中荷载，在剪滞微分方程基础上，利用得到的单元刚度矩阵及虚功原理，进一步推导了单元等效节点力向量中各元素的具体表达式。

Based on the present stiffness matrix and the principle of virtual work , the vectors of equivalent joint loads are further derived for the vertical uniform and concentrated loads .

再根据哈密顿原理导出了悬索大挠度振动的有限体积离散方程，推出了索的整体节点力向量、质量矩阵和切线刚度矩阵。

The final finite-volume discretization equations are derived using the Hamilton principle . Meanwhile the global nodal force vector , mass matrix and tangent stiffness matrix of the cable are obtained .

该算法基于反应力向量灵敏度模型参数化方法的改进算法，适用于线性结构的一般有限元模型；

The proposed method is based on the modified algorithm of the response force vector 's sensitivity based parameterization method , and suitable to general finite element models of linear structure systems .

根据虚功原理，提出同时考虑滑移效应、剪力滞及剪切变形效应的组合梁单元及等效节点力向量，编制组合梁梁段有限元程序。

According to the virtual work principle , the unit stiffness matrix and equivalent nodal force vector of the composite beam were established in consideration of the slip effect , shear lag effect and shear deformation .

另一个强度指标则以推覆分析中模糊化的加载力向量为基础，通过扩张原理及推覆分析得到结构位移延性模糊集再取代表值求得。

Another intensity measure , based on fuzzy valued force shape vector used in pushover analysis , obtaining the fuzzy set of displacement ductility by extension principle and pushover analysis , is also determined as representative value .

异常组综合力向量曲线通过大部分座标区域的时间及频率较正常组明显增加（P<0.05）。

Results The value of the colligation force vector passing most of the regions were significantly decreased ( P < 0.05 ), while the duration and frequency of the curves in these regions were significantly increased ( P < 0.05 ) .

地壳受力的向量场及奇点的存在性

Existence of singular point and vector fields for the force of crust

力边界法向量在套管应力数值分析中的应用

Application of force boundary normal vector in numerical analysis of casing stresses

根据模糊评价理论，确定桥梁承载力状况分布向量，引入马尔科夫过程方法，构造结构状态转移概率矩阵。

According to fuzzy evaluation theory , the distributing vector of bridge condition on bearing capacity was determined .

将支持向量机方法应用到地基工程中，提出了计算地基承载力的支持向量机方法。

Applied support vector machine to foundation engineering , and proposed support vector machine method to compute the foundation bearing capacity .

利用随机波浪力及状态向量的实时在线预测公式，推导出最优控制力向前一步预测的表达式。

A Kalman filter is employed to obtain a forward-prediction of structural response for the active control system subjected to wave loading .

所得等参元力边界法向量数值理论及计算软件，普遍适用于一般边界法向量问题。

This theory and calculation software for the isoparametric force boundary normal vectors can be commonly used to solve ordinary boundary normal vectors .

借鉴时间空间转换思想，提出一种基于逆阵的改进方法用于计算转移概率矩阵，并给出利用桥梁当前承载力状况分布向量修正转移概率矩阵的方法。

And with the idea of time-space transition , the transition probability matrix of bridge condition was calculated by an improved inversion method . The transition probability matrix was amended according to the initial and current distributing vectors of bridge condition .

然后利用影响矩阵的概念，令索力为受调向量，索长为施调向量，通过控制各索的长度来调整优化索力。

After obtaining the whole loads we optimize cable tension by means of controlling cable length on the basis of influence matrix method .

针对新建桥梁、在役桥梁以及考虑加固的桥梁分别给出其承载力可靠度分布向量预测公式，并提出承载力预测指标。

The distributing vector of bridge condition on bearing capacity was predicted for new bridge , existing bridge and the bridge undergoing reinforcement . A new prediction index was put forward .

通过对影响管线应力的因素进行分析，运用支持向量机建立含腐蚀凹坑管线的管线应力支持向量机模型。

After an analysis of factors influencing the stress of the pipeline , a SVM model for the stress of pipelines with corrsion pits is established .

在力反馈虚拟现实设备中，力被作为向量的形式进行处理，论文认为常用的力反馈表达方式有基于动作的方式、基于时间的方式或者这两者的混合。

In the virtual force feedback equipment , force is dealt as vectors . Generally speaking , force rendering includes motion dependent , time dependent and the combine of both .

针对复合地基承载力设计存在的问题，提出了基于支持向量机的预测方法，通过对影响复合地基承载力因素的分析，建立了复合地基承载力预测的支持向量机模型。

In view of the problems of design of composite foundation load-bearing capacity , a new method based on support vector machine for predicting load-bearing capacity of composite foundation was proposed .