摘要
利用能量作疲劳损伤基本参量,建立了疲劳损伤的能耗结构,在试验的基础上,围绕着疲劳损伤过程中的不可逆能耗分析,系统地研究了循环过程及循环内的疲劳损伤热能耗散变化规律,并寻找出疲劳过程中循环滞回能与有效能耗(储能)之间联系。
Using the dissipated energy as an essential parameter, the energy dissipative
structure in process of fatigue damage of materials has been established. Through
thermodynamic analysis for irreversible energy dissipation in fatigue damage process, the heat
dissipative variations in cyclic loading process as well as in a cycle have been systematically stu-
died on the basis of low cycle fatigue tests and infrared measurement of self-heating
thermography. Meanwhile, the cyclic hysteresis energy and efficicent energy dissipation (stored
energy) have been proposed during fatigue damage process.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1992年第4期A163-A169,共7页
Acta Metallurgica Sinica
基金
国家自然科学基金
航空科学基金(NSFC19002017
90B53167)
关键词
疲劳损伤
能耗
循环过程
fatigue damage
energy dissipation
cycle loading process