CAJ | 학술논문

针对装备中火控计算机在振动冲击环境下印制电路板上的引脚及焊点处往往首先失效，但该处的应力大小又难以通过实验测得的特点，利用ANSYS有限元软件对火控计算机中轴角转换板进行动力学分析---模态分析得到了其各阶固有频率和振型；谐响应分析求得了同一频率下不同位置的谐响应峰值；瞬态动力学分析确定了电路板在已知激励下各位置应力随时间变化曲线。其结果为进一步分析和研究元器件引脚及焊点失效提供了依据。同时，通过仿真可以找到电路板的薄弱环节并采取相应措施提高其可靠性。最后通过模态实验验证了模型的正确性。
침대장비중화공계산궤재진동충격배경하인제전로판상적인각급한점처왕왕수선실효，단해처적응력대소우난이통과실험측득적특점，이용ANSYS유한원연건대화공계산궤중축각전환판진행동역학분석---모태분석득도료기각계고유빈솔화진형；해향응분석구득료동일빈솔하불동위치적해향응봉치；순태동역학분석학정료전로판재이지격려하각위치응력수시간변화곡선。기결과위진일보분석화연구원기건인각급한점실효제공료의거。동시，통과방진가이조도전로판적박약배절병채취상응조시제고기가고성。최후통과모태실험험증료모형적정학성。
For the characteristic that the PCB pins and solder joints at the shock and vibration environment for fire control computer equipment are often the first to fail and the stress size is difficult to measure by experiment. Dynamic analysis of the axial angle converter board which in the fire control computer is analyzed by using finite element software ANSYS. The modal analysis gets each order of frequency and mode shape,harmonic response analysis obtains the different locations peak at the same frequency,transient dynamic analysis determines the stress-time curve at different position of the PCB under the known excitation. As a result,it provides a basis for further analysis and research on component pin failure. At the same time,the simulation can find the weak links of the PCB and take the appropriate measures to improve its reliability. Finally,using the modal experiment verifies the correctness of the model.