complex stiffness meaning in English
复合刚度
Examples
- A comparison is made with available simplified theories such as that corresponding to plane strain model . the comparison involves many aspects such as the soil resistance factor , the soil complex local stiffness and the pile complex stiffness at the level of the pile head . the applicability of the other two models is analyzed and checked
3 、将本文严格解与其它简化解(如基于平面应变假定的解等)从土层阻抗因子、土层局部复刚度和桩顶复刚度等方面进行了对比分析，检验和校核了简化解的适用性。 - Based on the solutions proposed herein , the longitudinal vibration properties of an integral pile in a uniform soil or layered soil , a pile with variable sections or variable modulus in a uniform soil are discussed respectively . the influence on the curves of complex stiffness , mobility and reflection wave of pile caused by soil modulus , the degree of pile defects , and the length and location of pile defects are emphatically discussed . 3
利用所得解分别对均质土中完整桩、成层土中完整桩、均质土中变截面桩和均质土中变模量桩的纵向振动特性进行了分析，重点讨论了土层模量变化、桩身缺陷程度、缺陷段位置、缺陷段长度等因素对桩顶复刚度、速度导纳和反射波曲线的影响。 - A state space model for parts of non - linear oscillation systems is put forward , and the concealed analytical solution for the systems is deduced . a numerical calculation method is presented and the calculation precision is improved greatly through using iterative method . finally the presented numerical method is extended to solve differential equations with complex stiffness matrix
导出了一类非线性振动系统的状态空间模型，在此模型中给出了非线性振动系统的隐式解析解，提出了相应的数值计算方法，并利用迭代法有效地提高了计算精度，最后将该数值方法推广应用到复刚度振动方程的数值求解计算中。 - 2 . the complex stiffness corresponding to three bearing conditions of semi - infinite elastic subgrade , finite elastic soil layer and end bearing at the pile bottom are theoretically investigated , and analytical expression of the complex stiffness corresponding to finite elastic soil layer bearing condition is obtained . the special influence of bearing conditions on dynamic response at pile head is then discussed
2 、对刚性支承、有限厚度土层支承和半无限空间支承三种桩底部支承情况下桩底支承复刚度和桩周土底分布支承复刚度的解析表达及其特性进行了推导论证，通过假定桩底土为与桩等截面的土柱推导求得有限厚土层支承条件下桩底支承复刚度的解析解，并据此分析了不同底部支承边界对桩顶响应的影响。 - The main original work includes : 1 . the interaction between an integral pile and a uniform visco - elastic soil layer with viscous damping or hysteretic damping is theoretically studied , and the pile response to a harmonic load is obtained in a closed form and used to define complex stiffness at the pile head . semi - analytical solution of the velocity response in time domain subjected to a semi - sine wave exciting force is also given
主要工作包括： 1 、在考虑桩周土三维波动条件下，对滞回阻尼、粘性阻尼单层均质土中桩土纵向耦合振动问题进行了解析研究，分别得到桩顶位移、速度频域响应以及复刚度的严格解析表达，以及半正弦脉冲激振力作用下桩顶时域响应半解析解。