Joint dynamic stiffness and damping were identified via solving the former identification model by use of least square method (LSM) or neural network method.
分别采用最小二乘法和神经网络方法对上述方程进行求解，推导出了关节动态刚度和阻尼的辨识模型。
Based on the concept of equivalent stiffness of rock masses, the estimation of joint stiffness in distinct element model of stiff blocks is discussed.
以节理岩体等效刚度的概念为基础，讨论了离散元刚性块体模型中节理刚度的选取问题。
This kind of element can make use of joint experiment data to build solid joint model and can include normal nonlinear stiffness and coupling between shear stiffness and normal pressure.
该单元能够利用现有的结合部实验数据建立实体模型，能够计及法向的非线性刚度和剪切刚度与法向面压的祸合关系。
From a yield line model used for calculating RHS-joint strength, a stiffness model is developed for a stepped T-type RHS joint, and a stiffness formulas is established.
在计算节点强度的塑性铰线模型的基础上，建立了不等宽t型方管节点在支杆轴压荷载作用下的刚度模型，推出了刚度简化计算公式。
The effect of various factors on the joint stiffness is also simulated by using the model, which shows reasonable results.
文中还应用模型对各种因素对接头刚度的影响规律进行了模拟 ，所得结果是合理的。
Based on establishing the stiffness matrix of the columns and beams with joint damage, the finite element model of the damaged frame structure is set up.
文中在提出有结点损伤的梁柱有限元刚度矩阵的基础上，建立了有结点损伤框架结构的有限元模型。通过完好结构和有损伤结构的有限元分析。
Based on establishing the stiffness matrix of the columns and beams with joint damage, the finite element model of the damaged frame structure is set up.
文中在提出有结点损伤的梁柱有限元刚度矩阵的基础上，建立了有结点损伤框架结构的有限元模型。通过完好结构和有损伤结构的有限元分析。
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