CAJ | 학술논문

选取混装组件进行建模仿真，建模时将混装组件中焊点和引脚等效成一个块状进行简化处理。采用GJB150.16-86中推荐的“第8类随机振动-喷气式飞机振动环境”振动试验条件进行随机振动仿真分析，分析组件的翘曲度、组件应力集中区域（薄弱环节）、组件中器件焊点应力应变分布及危险焊点位置；再运用子模型法建立危险区域焊点精细模型，利用子模型来求解3种不同类型焊点的应力应变值；最后运用M iner疲劳累积损伤理论、三带技术和三参数 S- N曲线近似公式进行不同类型焊点寿命估算。研究结果表明：翼形引脚焊点类型抗振强度最低， J型引脚焊点类型其次， BGA类鼓状焊点类型抗振强度最好；BGA类鼓状焊点振动疲劳寿命为14.18 h ，翼形焊点疲劳寿命为8.54 h ， J形焊点疲劳寿命为8.96 h。
선취혼장조건진행건모방진，건모시장혼장조건중한점화인각등효성일개괴상진행간화처리。채용GJB150.16-86중추천적“제8류수궤진동-분기식비궤진동배경”진동시험조건진행수궤진동방진분석，분석조건적교곡도、조건응력집중구역（박약배절）、조건중기건한점응력응변분포급위험한점위치；재운용자모형법건립위험구역한점정세모형，이용자모형래구해3충불동류형한점적응력응변치；최후운용M iner피로루적손상이론、삼대기술화삼삼수 S- N곡선근사공식진행불동류형한점수명고산。연구결과표명：익형인각한점류형항진강도최저， J형인각한점류형기차， BGA류고상한점류형항진강도최호；BGA류고상한점진동피로수명위14.18 h ，익형한점피로수명위8.54 h ， J형한점피로수명위8.96 h。
In this paper ,the modeling and simulation of mixed components are introduced .A solder and pin is transformed into a block during the modeling of the mixed components .The vibration test conditions recommended by GJB 150 .16-86 which is called EighthClassRandomVibration- JetAircraftVibrationEnvironmentisemployedtoperformrandomvibrationsimulationanalysis . The warping degree ,the region of stress concentration (weak link) ,the solder stress and strain distribution and risk solder joint po-sition of the component are analyzed .T he submodel method is used to build detailed modeling of risk zone solders and solve stress and strain values of three different types of solders .Finally ,the serive life of solders is estimated through Miner fatigue cumulative damage theory ,three band technology and three parameters S-N curve approximation formula .The results obtained from the analy-sis as following :wing pin solder’s vibration strength is the lowest and the value is 8 .54 h ,the J solder’s fatigue life is 8 .96 h ,and the BGA solder’s fatigue life is 14 .18 h .