known damage

This paper analyzes the failure mechanism of gears, cooperates dynamics and FEM to calculate fatigue life of gears, then predicts residual fatigue life of third speed gears of transmission case based on known damage history.

本文分析了齿轮的失效机理，运用动力学和有限元联合仿真法来计算齿轮总的疲劳寿命，结合齿轮的服役历史对变速箱三挡啮合齿轮的剩余疲劳寿命进行了预测，并给出了预测模型。

Exposure to lead is known to damage the brains of young children.

众所周知，接触铅对幼儿的大脑有害。

However, it is known to damage the human nervous system.

然而，它能摧毁人的神经系统，这一点是已知的。

Four known damage cases ( 3 symmetric and 1 asymmetric) for braced structures were analyzed for the analytical benchmark problems proposed by the International Association for Structural Control and the American Society of Civil Engineers ( IASC-ASCE) Task Group on Structural Health Monitoring.

考虑3种对称损伤模式和1种非对称损伤模式，对由国际结构控制协会与美国土木工程学会（IASC-ASCE）提出的健康监测Benchmark模型结构第二阶段有斜撑的情况进行模拟分析。

In the numerical calculation, known the damage threshold can make the results well comparison.

在数值计算中，已知损伤阈值可以使计算结果得到很好的对照。

Known the damage threshold of the experimental materials can be a good guide.

已知实验材料的损伤阈值可以对实验有一个很好的指导作用。

Four known damage patterns, including single, symmetric, asymmetric and multi-story damages, are simulated by removing corresponding braces.

通过拆除斜撑，模拟了单损伤、对称多损伤、非对称多损伤以及多层损伤四种损伤模式。