查询词典 parametrical

Aimed at such L-shape structures, a series of parametrical Finite Element Analyses have been done to obtain some knowledge of utility.

针对圆角结构和异质材料垂直连接的L-型结构，开展了系列参数化有限元分析，给出这类L-型结构数值计算网格处理的实用化建议和参考。

This thesis mainly researches on following aspects: the structure , the working principle and the whole device parametrical model of soft start device for belt conveyer ; mechanism movement simulation; and properties of hydraulic-viscous friction drive . It also designs the hydraulic control systems and electrical control systems.

本文重点研究了带式输送机软启动装置的结构、工作原理、整机的参数化建模、机构运动仿真以及液粘摩擦传动的特性，设计了该装置的液压和电气控制系统。

According to Floquet theory and transition curves of Mathieu equation, two different modified strained parameter methods are compared on precision of periodic solutions. The effect of viscous damp on parametrical rolling stability is analyzed with the modified strained parameter method.

根据Floquet理论和方程的稳定性过渡曲线，比较2种不同改进变形参数法的求解精度，利用改进变形参数法来分析黏性阻尼变化对参数横摇稳定性的影响。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。

In order to solve the linear strong parametrical excitation equation, the method for solving strong parametrical excitation Mathieu equation is brought out. With the introduction of a new conversion, the strong parametrical excitation problem is converted to weak parametrical excitation problem. The second order approximate periodic solutions are obtained and the transition curves are gained by using a modified strained parametrical method.

为适应求解垂荡与纵摇耦合运动的线性强参数激励方程，提出了强参数激励Mathieu方程的求解方法，通过引入新的变换，将强参数激励问题转化为弱参数激励问题，应用改进的变形参数法求其二阶近似周期解和过渡曲线。

Since the lengths of the line segments and the angles between line segments are treated as representation parameters, it is convenient to construct energy function and to deal with displacement and length constraints. Based on this advantage, a parametrical model for human body is proposed, which can easily produce human body models with different feature sizes. The above method is just suitable for polylines. Therefore, a generic deformation method for both discrete curves and surfaces is presented. The energy function is constructed by analyzing the relationship of the points before and after deformation. Together with the displacement constraints, the deformation problem is converted to a convex quadratic programming. A necessary condition for constraint points and a sufficient condition for the uniqueness of solution are given. The proposed method can be combined with skeleton-driven animation to control the deformation.

将线段长度与线段之间的角度作为表示参数，既有利于能量函数的构造，又便于处理位移约束和长度内蕴约束条件，利用这一优势，将其应用于三维人体的参数化建模，可以方便地产生具有不同特征尺寸参数的人体模型，由于这种方法只适用于折线变形，具有较大局限性，因此，本文进一步提出一种较通用的离散曲线曲面变形方法，通过分析变形前后的位置关系来构造能量函数，再加上位移约束条件，将变形问题转化为一个凸二次规划问题，并且给出了约束点应满足的必要条件及模型解唯一的充分条件，这种方法还可以与骨架驱动变形的思想相结合，能更好的控制变形。

Secondly, analyzed character of parametrical technology, and then requirement for modeling in the system.

研究了顶驱钻机虚拟样机原型系统的体系结构、集成框架、建模方法和关键技术。

This thesis introduces the mechanism principle of the device and makes mechanism movement simulation on the base of its parametrical model .

介绍了该装置的机构原理，在参数化模型的基础上进行了机构运动仿真。

This library is used as a core project using hierarchical and parametrical modeling methods.

对于某些非建筑类的园林配景构件，采用了Fractal方法进行造型。

To realize the parametrical design of pipe die for extrusion, a parametrical design language with friendly graphic user interface was combined with the APDL language (Ansys Parametric Design Language) provided by ANSYS software, and then the flow fields was analyzed.

本课题为机头设计提供了一种方法，即利用具有良好图形用户界面的参数化设计语言，结合ANSYS有限元软件自带的APDL（Ansys Parametric Design Language）语言，实现了芯棒式管材挤出机头流道的参数化设计，并利用ANSYS有限元分析软件对其流场进行模拟计算和分析，以获得较为适宜的机头几何参数。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。