In this paper,based on linear creep assumption,(1) tWo theorems about creepcoefficient C(t)and relaxation coefficient K_p(t,)are dirived, i.
本文在线性徐变条件下,(1)导出了关于徐变度和松弛系数的两个定理;(2)提出了直接由徐变度求松弛系数的一种递推公式;(3)对求解徐变问题的初应变法和初应力法,导出了对于任意的松弛系数和徐变度表达式的一般递推公式,从而简化了计算方法,避免了应变或应力历史资料的存贮,节省计算机的大量存贮量。
This new method introduces element s relaxation coefficient,which relates to the working distance and initial ground stress,and it improves conventional finite-element method.
为了克服这一问题,本文引入与开挖面距离和初始地应力有关的单元材料参数松弛系数,对传统有限元方法进行改进,并将其应用于溪洛渡水电站地下厂房开挖与支护的变形监测反馈分析中。
Section 2 explains that the relaxation coefficients A and B,which are related to the shape of the hole and the drilling increment of the multi-layered ceramic coatings,are calculated with eq.
以典型的复合层状材料热障涂层为例,利用有限元分析软件对热障涂层的松弛系数进行了数值计算分析研究。
The coefficient of relaxation is introduced in the iterative algorithm and the influence of the coefficient of relaxation is discussed by numerical results.
用M ATLAB编制了优化程序,实现带位移约束的桁架满应力优化设计方法,在迭代过程中引入松弛系数,并通过算例分析松弛系数对优化结果的影响及其原因。
According to the experimental data obtained in our country, we have determined each parameter in the formulas on the basis of optimization, then infers the practical tables of stress relaxation coefficient of massive concrete with the help of elastic creep theory.
在此基础上按弹性徐变理论推求出混凝土的应力松弛系数,编制成便于实用的计算表格。