工程力学研究所 meaning in Chinese
institute of engineering mechanics
Examples
- The main objective of the thesis is to study the effectiveness of hysteretic dissipators , especially the new type of mild steel damper ( msd ) developed by iem
本文主要研究工程力学研究所改进的一种新型软钢阻尼器，对其减振机理和减振效果作了一定的研究。 - The results in this paper indicate that the two boundary conditions , permeable boundary condition and sealed boundary condition , of surface , permeability of the media , and surmounting loads of surface , all have influence on the dynamic response of two - phase media to a certain extent
中国地展局工程力学研究所硕士学位论文曰. . ‘ . . . . . . . . . .研究表明表面透水条件、介质渗透性、上覆荷载等因素对两相介质的动力响应都有一定的影响。 - The notable torsion effects of the surface ground motion above the alluvial valley are illustrated and the torsion effects become stronger as the frequency of the incidence is higher . ( 4 ) antiplane surface motion of the underground circular soft inclusion and the underground homogeneous soft interlayer is investigated in this paper . the results indicate : surface displacement amplitudes just above the soft inclusion of small depth - to - width ratio is amplified and soft interlayer of small depth - to - thickness ratio is amplified to a certain degree , and moreover , the latter is lower limit of the former
结果表明：垂直入射时，小深宽比软夹塞上方地表位移幅值有较大的放大，小深厚比软夹层的地表位移幅值也有一定的放大，且后者为前者的下限；波接近掠入射时，软夹塞正上方地表点和软夹层的中国地震局工程力学研究所硕士学位论文一地表位移幅值都没有放大，而软夹塞迎波面一侧地表点的位移幅值会有一定的放大；软夹塞上方的地表位移运动有较强烈的扭转效应，且此扭转效应随入射波频率的增高而增强。 - The contrast is higher , the amount of reflect becomes more ; and the sedimet is deeper , the shaking duration becomes longer . so . as the contrast higher and the depth deeper , more waves converge on the basin , more waves interfere with each other , the duration is longer , the amplitude of displacement or accelerate is larger , and the fourier responce spectra contain more components
所以，基岩与沉积层的剪切波速比越大，沉积层的深度越大，波就越容易聚集在盆地中，中国地震局工程力学研究所硕士论文波与波之间的干涉机会就越多，盆地的振动时间就越长，沉积层的位移和加速度反应就越大，波的频谱成分就越丰富。 - Based on the unified recursive formula , the four algorithms included in this study are the central difference method , the newrnark ' s method , z - transform method , and duhamel ' s step integral method . the accuracy , the phase and other existent problem are studied in this paper . it is proved in this paper that the recursive parameters b1and b2are relate to the poles of theoretical transfer function
分析中可以发现，中心差分方法， newmark中点加速度方法、 z变换方法及duhamel逐步积分法在精度范围内其计算相位是没有畸变的，中国地震局工程力学研究所顷土学位论文一但是中心差分方法， newmark中点加速度方法随着采样间隔及系统自振频率的增大，系统的固有自振周期被改变，其传递函数的共振区域与理论传递函数的共振区域会发生分离。