查询词典 sandwich beam

Pure bend sandwich beam specimen plays an important part in evaluating the fracture resistance of interface.

摘 要 纯弯曲的Sandwich梁试样在评价界面断裂抗力方面有重要作用。

Meanwhile, the active vibration control of the sandwich beam with the PCMTS cores was studied.

针对含有1-3型PCMTS芯材的夹芯梁结构，实验研究了PCMTS在静电场作用下的驱动特性，并利用PCMTS芯材对夹芯梁的振动进行了主动控制实验。

The results indicate that the force-deflection curve of sandwich beam under bending load is different from that of cast iron, its absorbed energy and cushion is similar to that of foam aluminum.

结果表明，层合梁在弯曲载荷作用下的力－挠度曲线变化规律不同于铸铁，具有与泡沫铝相同的吸能和缓冲特性，显示良好的层合效果；层合梁与泡沫铝梁的弯曲变形过程相似，在工程应用中有着良好的应用前景。

The dynamic stability of a rotating electrorheological sandwich beam with periodically varying velocity is studied by using the method of multiple scales.

采用多尺度法对周期变速旋转运动电流变夹层梁的动力稳定性进行了研究。

Numerical results show that the vibration characteristic and dynamic stability of the rotating ER sandwich beam can be adjusted when it subjected to an electric field, and the ER material layer can be used to improve the dynamic stability of the rotating flexible beams.

故在一定的条件下，可以通过控制作用于电流变夹层梁的电场强度来调节旋转运动柔性梁的振动特性，提高结构的动力稳定性。

The results indicate that, using the PCMTS cores as the actuators, an ideal deflection of the sandwich beam is generated and the vibration of the sandwich beam is suppressed effectively.

结果表明，利用PCMTS作为驱动元件，夹芯梁获得了比较理想的变形量，其振动也能得到较为有效的控制，因此是一种很有应用前途的驱动方式。

Mechanical principle and design tenet of sandwich Beams for Buffer and damping is discussed by use of analyzing stresses, strain, deformation, strength and energy storing in a cantilever sandwich beam.

通过分析悬臂夹芯梁在冲击力P作用下的应力、变形、强度和储能原理，讨论了夹芯梁用于缓冲和减振的力学原理和设计原则；给出了夹芯梁用于缓冲减振时，蒙皮与芯层尺寸的选择和材料特性选择的原理和方法。

Assuming the angular velocity of the beam is given as a harmonic function of time, the rotating sandwich beam is regarded as a parametrically excited system.

假设电流变夹层梁绕固定轴线做随时间变化的简谐周期运动，将变速度转动梁作为一个时变参激振动系统，分析了不同结构和控制参数对失稳区域的影响。

Based on the principle of energy superposition and by using the equivalent transformation for beam sections, an expression for calculating the energy releasing rate of interface crack growth in a sandwich beam specimen is developed, and the toughness for the interface of Si 3N 4/Al formed by vacuum diffusion method is measured by a particularly designed four point bending test system.

基于能量叠加和梁的等效截面转换原理，本文导出了计算Sandwich梁试样界面裂纹扩展能量释放率的解析式，并利用专门设计的四点弯曲实验系统测得了Si3N4／Al真空扩散连接界面的韧性，进而为优化陶瓷／金属连接工艺、筛选材料组配和评价其连接界面的抗断裂性能提供了必要的研究方法和实验手段。

The explicit solution of the strain energy release rate of crack propagation along the pure bend sandwich beam specimen has been deduced in the paper by use of the superposition principle of the energy and section inversion method. Based on the critical load of crack propagation along the interface through the testing measurement, the fracture toughness of four-point bending Si3N4/Al/Si3N4 specimens along Si3N4/Al diffusion joining interface has been obtained by using the explicit solution.

利用能量的叠加原理和截面转换方法，本文导出了纯弯曲Sandwich梁试样界面裂纹扩展应变能释放率的显式解，并根据实验测得的界面裂纹扩展的临界载荷，用其计算出了四点弯曲Si3N4/Al/Si3N4试样Si3N4/Al扩散连接界面的断裂韧度。

I can't say anything hurtful about anyone.

我不能说任何伤害人左右。

She was a short fat woman , garbed in a very tight , very gaudy red dress .

大冬天的，我们穿两件毛衣她却穿件短袖，不停地扇扇子，一个劲叫热。