1) statically indeterminate problem
静不定问题
1.
Analyzes the statically indeterminate problem of three-dotted supporting high-speed shaft of 4~(#) plate shearing machine at Jigang medium plate plant, shows the problems appeared in long-time use, and pointes out that the rigidity and intensity of shaft should be paid more attention to, as well as the lubrication and supporting format of shaft and bearing.
通过分析济钢中板厂4号剪板机高速轴三点支撑静不定问题并进行改进,阐明了三点支撑静不定问题在长期使用维修中容易出现的问题,指出改造三点支撑静不定问题时应注意轴的刚度和强度、轴和轴承的润滑及支撑形式等问题。
2) nondefinite problem
不定问题
3) hyperstatic problem
超静定问题
1.
The correclion is acquired on hyperstatic problem with analysis to practice example.
通过对超静定问题的实例分析 ,对一种观点做了修正。
4) statically indeterminate problem
超静定问题
1.
During the course of discussing statically indeterminate problems of rods under normal force,the teaching method of one-problem-many-solutions is adopted for the purpose of cultivating diffusing thought.
探讨在拉压超静定问题教学中,运用一题多解训练的方式培养学生的发散思维能力问题。
2.
The method for using the formula was illuminated which is suitable for calculation by computer because of its unitive form,and it can also solve the statically indeterminate problem.
该方法形式统一,适合计算机计算,并且可以用于超静定问题的求解。
3.
However, if the number of plastic hinges of the plastic mechanism set is less than n+1(n is the degree of redundancy of original structure), the statically indeterminate problems surely occur in calculating the internal forces for checking yield condition.
然而 ,当所设机构的塑性铰数
5) ill-posed problem
不适定问题
1.
In the fields of chemistry and chemical engineering, most of the data mining problems are actually "ill-posed problems" .
化学、化工领域中多数数据处理问题属于数学中的“不适定问题”(ill-posed problem),而传统的化学计量学算法如线性和非线性回归,人工神经网络等忽略了这一特点,将其作为“适定问题”(well-posed problem)求解,是引发数据处理中“过拟合”问题的重要原因。
2.
A regularizing Lanczos method is presented for the solution of the linear ill-posed problem.
本文将该问题离散化为欠定线性不适定问题,提出求解欠定线性不适定问题的正则化L anczos方法。
3.
Sideways heat equation is a typical ill-posed problem.
热传导终端反问题是典型的不适定问题,应用基于全变差的正则化方法来获得它的稳定数值解,将近似解的求解范围由连续函数空间扩大到了有界变差函数空间,并将固定点迭代法用于求解非线性的Euler方程,并进行了理论分析和数值实验。
6) ill-posed problems
不适定问题
1.
The Regularization Theory for Ill-posed Problems and Application;
不适定问题的正则化理论及其应用
2.
The canonical TSVD method is a good regularized method for solving linear ill-posed problems, and we adopt the bisection method with inverse iteration to effectively realize canonical TSVD method.
典则TSVD方法是求解线性不适定问题的一个好正则化方法,而采用二分法结合反迭代法能有效数值实现典则TSVD方法。
3.
Theoretically,canonical truncated singular value decomposition(TSVD) is considered a good regularization method in solving ill-posed problems.
典则TSVD方法是求解线性不适定问题的一种很好的正则化方法。
补充资料：静不定结构
具有多余约束的结构，又称超静定结构。多余约束是指在静定结构上附加的约束。每个多余约束都带来一个多余未知广义力，使广义力的总数超过了所能列出的独立平衡方程的总数，超出的数目称为结构的静不定度或静不定次数。图为静不定结构的示例,图中的a可看成由一悬臂梁和一个约束支点组成的结构，由于悬臂梁是静定的，而约束支点带来一个垂直方向的未知力，所以这个结构是一度静不定结构;图中的b是在静定双支点梁上附加一个约束支点的结构，所以也是一度静不定结构;图中的c则是一个三度静不定结构,因为它是在悬臂梁上附加一个固支端构成的,该固支端提供一个水平约束、一个垂直约束和一个转动约束。求解静不定结构问题不能单凭平衡方程，还必须考虑结构的变形。求解的方法主要有力法和位移法。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条