CAJ | 학술논문

在分析、比较和论证美英德和我国同类标准计算方法的基础上,确定了计算载荷的种类、考核点的位置,选取了应力集中系数和低周疲劳设计曲线,确定了主应力差计算的强度准则和疲劳损伤安全准则的计算方法,建立了径向温差及其热应力的计算方法、内压应力和径向温差热应力的合成方法,并形成了满足蒸汽动力装置机动性要求的增压锅炉汽包低周疲劳寿命计算方法.方法的建立,不仅对增压锅炉汽包的设计工作具有指导作用,而且为最终确立增压锅炉汽包低周疲劳寿命计算方法及其相关问题的拓展性研究奠定了基础.
재분석、비교화론증미영덕화아국동류표준계산방법적기출상,학정료계산재하적충류、고핵점적위치,선취료응력집중계수화저주피로설계곡선,학정료주응력차계산적강도준칙화피로손상안전준칙적계산방법,건립료경향온차급기열응력적계산방법、내압응력화경향온차열응력적합성방법,병형성료만족증기동력장치궤동성요구적증압과로기포저주피로수명계산방법.방법적건립,불부대증압과로기포적설계공작구유지도작용,이차위최종학립증압과로기포저주피로수명계산방법급기상관문제적탁전성연구전정료기출.
On the basis of an analysis,comparison and argumentation of USA,Great Britain and German standard calculation methods as well as our country's same calculation ones,determined was the variety of calculation loads and the location of the examination and check points,and chosen were a stress concentration coefficient and the low-cycle fatigue design curve. In addition,the strength criterion for calculating the main stress difference and the method for calculating the fatigue and damage safety criterion were determined. The method for calculating the radial temperature difference and its thermal stress as well as the method for synthesizing the inner pressure stress and radial temperature difference-caused thermal stress were established. On this basis,the method for calculating the low-cycle fatigue life of a supercharged boiler drum was determined to meet the maneuverability requirements for steam power plants. The establishment of the method in question can not only offer guidance for the design of supercharged boiler drums,but also lay a foundation for the exploratory study concerning the final determination of the method for calculating the low-cycle fatigue life of supercharged boiler drums and other relevant problems.