查询词典 continuum problem

Based on the new penal function, OC algorithm are deduced and used for the topology optimization problem of continuum structure.

基于新的惩罚函数，推导并应用了适用于大型结构、多设计变量的准则法。

The ICM method based on this thesis, the topology optimization problem of continuum structures is solved.

本文主要工作内容是：(1)利用高阶缩并方法对广义几何规划问题求解。

Their numbers are perhaps one-tenth ours at any point in the space/time continuum as the problem of spiritual entropy causes them to experience constant disintegration of their social memory complexes.

在空间/时间连续体的任何一点上，他们的数目大概是我们的十分之一，这是由于灵性熵导致他们的社会群体持续地崩解。

The theory of "continuum of problem types" supplied a good frame for designing questions in class,"Five Why" question design ing methods played a important role in increasing practice of question design ing.

问题类型连续体"理论为课堂教学问题设计提供了框架"，五何问题设计方法在增加问题设计的可操作性方面起到了重要作用。

However, it is not accurate to calculate the problem of continuum media. The FEM may forecast the failure area of the material reasonably, whilst it is hard to calculate the failure process in brittle media.

有限元法适于预测脆性材料损伤和破坏的区域，但难以直接用于计算和模拟脆性材料及结构发生破坏的整个过程。

To tackle this problem within the continuum mechanics approach, one should establish new mechanics models, and further, use molecular dynamics simulation or other experimental to give reasonable verifications and supplements to the theory.

运用连续介质力学方法研究此类问题，首先需要建立新的力学模型；此外，还应当运用分子动力学（molecular dynamics，简称MD）模拟技术或者其他实验手段来对理论进行合理的检验及补充。

Degree B-Spline curve is chosen to fit the longitudinal settlement curves, which solves the problem of curvature continuum for joint notes due to its continuous second derivative vector and overcomes the efficiency and accuracy of computing curvature with 3 points by hand.

选取三次B样条方法对隧道纵向累计沉降曲线进行拟合，利用三次B样条曲线二阶导矢连续的特性，解决了拟合曲线在曲线连接点处曲率的连续性问题，克服了以往人工计算隧道曲率半径在效率和准确性方面的缺陷；并在此基础上，推导了隧道纵向变形曲率与纵向螺栓拉应力、相对弯曲与纵向螺栓剪应力之间的关系； 3。

Thecharacteristic and different using limit of both optimization criteria method andmathematics programming method are all analyzed in this paper. OC algorithm and theseries MMA algorithm based on SIMP approach are deducedand used for the topology optimization problem of continuum structure. MMA algorithm hasa bad convergence but it has a high computational efficiency, while GCMMA is excellent onconvergence and stability with bad calculation efficiency.

优化求解算法是拓扑优化问题求解的核心和关键，本文系统分析了适用于离散结构和连续体结构优化的优化求解算法，重点讨论了 OC 算法和 MP 算法，分析比较了不同算法的特点和适用范围，推导了基于 SIMP 理论的优化准则法和 MMA 系列算法，并将MMA 系列算法应用于连续体结构拓扑优化问题的求解。

Restricted by the assumption of low-order linear displacement approximation in each block, Discrete Element Methods often have to mesh many continuum parts of the problem domain into small discrete blocks when simulating crack propagation problems, and the result is very sensitive to the very way that divides the domain.

一般离散单元计算方法受离散块体低阶线性位移近似的限制，在模拟开裂过程时，需要将大部分实际上连续的区域离散化，离散方式对分析结果有显著影响。

One problem in China is that there is a gap in the design continuum.

中国的园林设计存在这样一个问题，即在设计的传承上出现了断代。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。