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beams and plates
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  梁板
     Applications of Weighted Residuals in Analysis of Beams and Plates on Elastic Foundation
     残值法在弹性地基梁板分析中的应用
短句来源
     The vibration transmission property of the one-, two-, and three-dimensional PCs with finite structure as well as the beams and plates based on the idea of PCs is researched with the finite element simulation and the vibration experiment.
     结合有限元仿真及振动实验对一、二、三维声子晶体的振动传输特性及梁板类结构声子晶体的弯曲振动传输特性进行了计算及实验测试;
短句来源
     The dynamic buckling of elastic structures, such as beams and plates, when subjected to an axial impact at one end, is studied in the present paper based on the theory of stress wave propagation.
     本文借助于应力波传播规律研究了弹性梁板结构在冲击载荷作用下的动态屈曲问题。
短句来源
     This method can also be used for other structural analysis of beams and plates with elastic supports in both ends.
     本方法还可应用于两端边弹性支承的空间梁板结构分析。
短句来源
     The structure of floors and roof of Harbin Zhongyang Tower is concrete beams and plates prestressed with unbonded tendons.
     哈尔滨中央大厦塔楼楼 (屋 )盖为无粘结预应力混凝土梁板结构。
短句来源
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  梁和板
     Beams and plates on Winkler foundation and elastic half space were calculated by collocation method and comparisons with theoretical results were made,which had indicated that this trial function was suited to solving many boundary value problems and also had a high accuracy.
     采用配点法对Winkler地基和弹性半空间地基上的梁和板进行了数值计算 ,并与理论结果或其它数值方法进行了对比 ,采用总残值进行判断数值结果的准确度 . 结果表明 ,该试函数适用于多种边值问题 ,且精度较高 .
短句来源
     The Dynamic Finite Element of Interchanged Thick/Thin Beams and Plates
     厚薄梁和板的通用动力有限单元
短句来源
     Based on the basic theory of element modal strain energy change and structure shape change before and after damage, the damage index was put forward to locate structure damage, the basic formulas are obtained firstly to identify the damage location and discriminate qualitatively the damage degree for beams and plates, and the program is compiled in calculating the damage index for beams and plates.
     基于单元模态应变能改变的基本理论,根据损伤前后结构振型的改变,提出了用于结构损伤定位的指标,并首次推导了识别结构损伤位置及定性判别混凝土梁和板损伤程度的基本公式,编制了梁和板损伤指标的计算程序。
短句来源
     The parameters study of the weight functions of Element Free Method has been carried out to determine their best values by the modal analysis of the beams and plates.
     通过梁和板的模态分析 ,对无单元法中权函数的参数进行了讨论并优化 ;
短句来源
     Beams and plates on Winkler foundation were calculated in method and comparisons with theoretical results were made. It proves that this trial function is applied to solving many boundary value problems with a high accuracy.
     对Winkler地基上的梁和板进行了数值计算 ,并与理论结果进行对比 ,结果表明 ,该试函数适用于多种边值问题 ,且精度高。
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  “beams and plates”译为未确定词的双语例句
     The Finite Element Analysis of the Flexible Beams and Plates
     柔性梁与柔韧板的有限元分析
短句来源
     Spline Finite Point Method for the Analysis of Nonlinear Dynamic Response of Beams and Plates
     梁、板非线性动力响应分析的样条有限点法
短句来源
     Analysis and Application of Mechanical System Including Beams and Plates Using the Direct Boundary Element Method
     梁、板的直接边界元法机械系统解析及应用
短句来源
     In this paper, detailed numerical analysis and experiment investigations on dynamic counterintuitive response of beams and plates subjected to short pulse loading have been studied.
     此种与常规现象不同的响应被称作动力响应的反直观现象。 本文对梁、板结构在动载荷作用下的动力反直观行为进行了较为系统的数值分析与实验研究。
短句来源
     Firstly by energy methods, combined governing equation of beams and plates can be established Then by introducing three different stress functions and δ function, and according to the equilibrium equation and compability condition, a Von Karman equation of the stiffened plates can be established.
     然后引入板、板长方向和板宽方向加筋三个不同的应力函数 ,通过 δ函数将加筋应力场离散 ,根据加筋板的平衡方程和变形协调条件 ,推导出加筋板的 Von-Karman方程。
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  beams and plates
The results are applied to linear thermoelastic rods, beams and plates of homogeneous and nonhomogeneous material with various boundary conditions.
      
Static and free vibrational analysis of beams and plates by differential quadrature method
      
Piezoelectric wafer active sensor embedded ultrasonics in beams and plates
      
Two of the modes were used in analogy with the flexural vibration of beams and plates.
      
Experimental data confirm that the type of die has a pronounced effect on the springback for beams and plates if the material exhibits a yield point.
      
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This program attempts to do the stress analys is of the space structures compoesd of bars, beams and plates by the small machine with small capacity of inner memory and imperfect outer memory.The main difficulty to compute the large complex structure by small machines is how to handle the overall matrix of rigidity. The formation of the overall matrix and transformation to the triang- le-shaped matrix are performed step by step. In the course of the transformation, those elements of the triangle matrix...

This program attempts to do the stress analys is of the space structures compoesd of bars, beams and plates by the small machine with small capacity of inner memory and imperfect outer memory.The main difficulty to compute the large complex structure by small machines is how to handle the overall matrix of rigidity. The formation of the overall matrix and transformation to the triang- le-shaped matrix are performed step by step. In the course of the transformation, those elements of the triangle matrix which effect the subse- quent triangle matrix do not occupy memory cel1s separately but add directly to the corresponding rooms. Thus a large amount of inner memory are saved and the computations are speeded up. Besides, in the overall matrix of rigidity, the combined coordinate system of local and overall co-ordinates is used so that the peculiarity of the linear equations due to the non-effective degrees of freedom are solved more satisfactory. Those unnecessary and unimportant parameters of degrees of freedom are excluded from the overall matrix of rigidity to save the storage of inner memory and speed up the computation. The aim to use smaller computing machine to solve large scale structural problems is thus fulfilled.

本程序试图用小内存和没有外存的小机进行由杆、梁及板组成的空间结构的应 力分析。用小机计算大型复杂结构的主要困难是如何处理总刚度阵和逐段实行三角 化.在三角化过程中,影响后面二角阵的那些矩阵元素不占存贮单元,而分别直接 加到它对应的单元中,所以节省了大量的内存.加快了计算.此外,在总刚度阵中 采用了局部-总体混合座标系,较满意地解决了由多余自由度引起的方程的奇异性. 那些不必要和不重要的自由度从总刚度阵中除掉,以节省内存,加快计算.达到了 用小机解决大型结构问题的目的。

Optimality conditions of a flexural member with lower bound on its cross section have been discussed by prager and Morz. The optimal design of fibre-reinforced plates having prescribed minimum specific fibre-volume has been obtained by Charrett and Rozvany.But the plastic speciality of optimal members at its minimum section was neglectd in their discussion so that optimality conditions might be inadequate. In this paper, the problem montioned above is studied again and the perfect Optimality conditions are obtained.These...

Optimality conditions of a flexural member with lower bound on its cross section have been discussed by prager and Morz. The optimal design of fibre-reinforced plates having prescribed minimum specific fibre-volume has been obtained by Charrett and Rozvany.But the plastic speciality of optimal members at its minimum section was neglectd in their discussion so that optimality conditions might be inadequate. In this paper, the problem montioned above is studied again and the perfect Optimality conditions are obtained.These conditions are employed to design several beams and plates. The calculation result of the virtual work equality shows them to be adequate.

Prager与Mroz曾提出了具有最小断面限制的挠曲结构的塑性优化条件。Charrett和Rozrany作了具有最小断面限制的纤维配筋固支园板和简支园板的优化解。但是,由于他们当时没有注意到优化结构在最小断面处的塑性流动性质,因此[1]和[2]中的优化条件是不完善的。本文重新系统地研究了此问题,推证出挠曲结构在最小断面限制下完整的塑性优化条件。运用这些条件作了若干种梁、板的优化设计,由功能等式证明它们都是正确的。

The present paper, by using the Quasi--Conforming Elements Techniques, ha- established the general purpose elements for thick/thin beam and plate bending prs oblems. Among those elements, the 6-parameter beam element QCB--6 and the 15- parameter plate bending element possessing relatively higher accuracy, less amo- unt of computational effort, are suitable for both thick/thin beam and plate and oan be afforded for practical uses. In this paper the choice of trial functions and their effects...

The present paper, by using the Quasi--Conforming Elements Techniques, ha- established the general purpose elements for thick/thin beam and plate bending prs oblems. Among those elements, the 6-parameter beam element QCB--6 and the 15- parameter plate bending element possessing relatively higher accuracy, less amo- unt of computational effort, are suitable for both thick/thin beam and plate and oan be afforded for practical uses. In this paper the choice of trial functions and their effects on element behavi- our have been discussed through the comprehensive analysis of eight kinds of be- am and plate elements. It is considered that, no matter what kind of methods are choisen for establishing elements, the choice of the trial function is of great im- portance of which both the interpolating accuracy and the suitable matching among various functions must be ensured.

本文应用拟协调元方法、构造了梁、板的厚薄通用单元.其中,六参数通用梁单元 QCB-6和十五参数通用板单元 QCGBP-15,具有精度较高,计算量小,通用于两种板(梁)理论的特点,可以提供实际使用.通过八种梁单元的综合分析,讨论了试探函数的选择,对单元性态的影响,并认为,不管应用哪种方法去构造单元,试探函数的选择都是相当重要的问题,既要保证一定的插值精度,又要考虑到函数之间的匹配.本文还给出了数值算例.

 
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