查询词典 nonlinear oscillations

In this paper, we used the nonlinear finite element method in contact theory to analyze contact force of vehicle separation surfaces, and stress of connectors, as well as rigidity of connecting surfaces between two cabins of a certain type of carrier rocket.

根据接触理论，运用非线性有限元方法对运载火箭的级间分离面进行了三种载荷工况作用下的接触分析。

The problem of the H〓 control for multi-input cascade nonlinear systems is investigated.

二研究了多输入非线性串级系统的H〓控制问题。

When calculating the pressure loss of laminar flow for Casson fluid in drilling tools, there is a need for a nonlinear equation. It used to be calculate by approximate formula.

在计算卡森流体在钻具中的层流压降时，需要求解一个非线性方程，以往通常使用近似公式进行计算。

The set-up of catastrophe theory is one of the most important achievements of nonlinear science.

突变理论的创立是非线性科学的重要成就之一。

By summarization of its application to soil engineering and the analysis of philosophical foundation, it can be predicted that catastrophe theory will be a effective method to solve nonlinear problems on soil engineering and the prosp...

通过总结其在土工中应用的概况及结合哲学基本理论，概括出其在土工应用的哲学基础，从而由辨证的角度展望其在此领域应用的前景。

2In view of the shortcoming of current analytical calculation method in solving inclined hanger cable suspension bridge,improved segmental catenary curve was put forward and nonlinear formulation group to fix on configuration of main cable of inclined hanger cable suspension bridge was deducd.Further more,a more efficient and simple FEM calculation method was obtained through establishing parameter calculation model and dynamic forecast.

2针对现有的计算悬索桥成桥主缆线形的解析计算方法在计算斜吊杆悬索桥方面存在的缺陷，提出了改进的分段悬链线计算方法，并导出了确定斜吊杆悬索桥主缆成桥线形的非线性方程组；然后针对原有的非线性有限元法计算复杂、计算效率低下的问题，采用基于ANSYS的APDL语言通过建立参数化的计算模型，并利用动态预测的方法总结出了一种效率高、操作简单的有限元计算方法。

This paper deals with the Cauchy problem for the nonlinear Klein-Gordon equation with competing potentials.

本文研究带竞争势的非线性Klein-Gordon方程的柯西问题。

Low regularity well-posedness for the Cauchy problem of some nonlinear wave equations was studied.

研究一类非线性波动方程的柯西问题的低正则适定性。

In Chapter 4, on the basis of introducing the theory of linear operator semigroup and the Cauchy problem in Hilbert space, this dissertation has researched the method on solving solution of distributed parameter system, and the model estimation and optimal control of the nonlinear distributed parameter system.

本文第四章在介绍线性算子半群理论及希尔伯特空间中的柯西问题的基础上，研究了分布参数系统的近似解求解方法，一类非线性分布参数系统的模型辩识和最优控制等问题。

In this paper,we study the Cauchy problem of nonlinear Klein-Gordonequations By introducing a family of potential wells, we not only give a threshold resultof global existence and nonexistence of solutions, but also obtain the vacuumisolating of solutions.

本文研究了以下非线性K1ein-Gordon方程的柯西问题通过引进一族位势井，不仅得到了该问题解的整体存在性与不存在的门槛结果，而且也得到了解的真空隔离现象。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。