水电能源科学
水電能源科學
수전능원과학
INTERNATIONAL JOURNAL HYDROELECTRIC ENERGY
2001年
2期
59-61，76
,共4页
汽轮机转子%疲劳%蠕变%损伤
汽輪機轉子%疲勞%蠕變%損傷
기륜궤전자%피로%연변%손상
turbine runner%high stress fatigue%high temperature creep%damage evolvement
提出了汽轮机转子在高应力疲劳与高温蠕变交互作用下的损伤本构模型与寿命评估方法，以及用于汽轮机转子结构分析的基本方程与变分原理，利用“间置加载”型荷载谱的特点，提出两个基本假设，并根据初始循环应力应变场对损伤过程中的循环应力应变场进行了有效描述，可对汽轮机转子结构寿命进行评估.
提齣瞭汽輪機轉子在高應力疲勞與高溫蠕變交互作用下的損傷本構模型與壽命評估方法，以及用于汽輪機轉子結構分析的基本方程與變分原理，利用“間置加載”型荷載譜的特點，提齣兩箇基本假設，併根據初始循環應力應變場對損傷過程中的循環應力應變場進行瞭有效描述，可對汽輪機轉子結構壽命進行評估.
제출료기륜궤전자재고응력피로여고온연변교호작용하적손상본구모형여수명평고방법，이급용우기륜궤전자결구분석적기본방정여변분원리，이용“간치가재”형하재보적특점，제출량개기본가설，병근거초시순배응력응변장대손상과정중적순배응력응변장진행료유효묘술，가대기륜궤전자결구수명진행평고.
In this paper, the damage evolvement theory and the lifeevaluating method of construction component of turbine runner working at high circle stress fatigue and high temperature creep are put forward. A damage constitutive theory of high circle stress fatigue and high temperature creep with iteration is presented. The primary equations and the variation principle of the structural analysis for turbine runner are brought forward. Considering the operating mode of high-temperature structural component of thermal power station, using the well known "between place cut in" load table characteristic, two assumptions are given that extrude the main feature of high circle stress fatigue and high temperature creep in process of iteration. From that, the stress and strain field of damages process can be gotton, and the life of turbine runner components would be evaluated.
