The main cause for such failure was the high varying stress from the blade flutter because of its relatively small flutter margins.

Equi Strength Design of Nonhomogeneous Variable Thickness High Speed Rotating Disk under Steady Temperature Field ON THE FATIGUE LIFE WITH VARYING STRESS AMPLITUDES

在定常温度场中非均匀变厚度高速旋转圆盘的等强度设计变应力幅值下的疲劳寿命问题

And set up calculating formulae on the fatigue life reliability under un varying stress amplitude and varying stress amplitude.

建立了恒幅常应力和恒幅变应力情况下疲劳寿命可靠度的计算公式。

Analysis of the statistical characteristics of the randomly varying stress in structure

结构的随机应力统计特性分析

The maximum likelihood function of varying stress accelerated life is a nonlinear multi-dimension complex object function with five evaluated parameters, whose parameter estimation is easy to get into local optimization with grads descending algorithm while has low searching efficiency with global optimal algorithm.

变应力加速寿命试验的极大似然函数是高维非线性复杂目标函数，其待估参数多，采用梯度下降优化方法进行参数估计容易陷入局部极值，而采用全局优化方法又存在寻优效率低的问题。

One method solving parameter estimation of varying stress accelerated life test

一类解决变应力加速寿命试验参数估计的方法

Time-varying element method and its application

时变元法及其应用

A theoretical analysis of the varying pitch screw in mathematics, physics and shaping principle was presented.

对变螺距螺纹的成形原理进行了分析。

A Study of Screw Machining for Varying Pitch

变螺距螺杆加工的研究

An Improved Design of Machining for Varying Pitch

加工变螺距螺杆的一种改进设计

Design of Electric Control System of Varying Pitch Propeller on-board

舰船液压变距桨控制系统的改进设计

The mechanism analysis for uniform motion of chain with varying pitch

变节距链的匀速机理分析

Machining Varying Pitch Screw with Universal Machine Tool

变螺距螺杆的通用机床加工

The Reforming of Machine Tool Based on Machining for Varying Pitch Screw

基于变螺距螺纹加工的普通机床改造

Multi-Objective and Varying Parameter Optimization of Machining Parameters Based on NC Simulation Data

基于仿真数据的数控铣削加工多目标变参数优化

Time Varying Parameter Choice Model and Analysis of Time Varying Responses of Monetary Policy

时变参数选择模型与货币政策的时变反应分析

Interference and the damping methods for a slowly varying parameter measuring system

缓变测量系统的干扰及抑制方法

A analytic method for circuits with linear and time-varying parameter

线性时变参量电路分析法

A Study of a Varying Parameter Object Control Scheme Based on Compensator

基于补偿器的某变参数对象控制方案研究

Grey Time Varying Parameter Model and Its Application to Climatic Prediction

灰色时变参数模型及其对气候预报的应用

Time varying parameter estimation is very important to the control of dynamic system.

时变参数的估计问题，对于动态系统的控制是十分重要的。