随钻压力测量装置电路板的抗振性研究

he logging while drilling (LWD) apparatus was used to measure such as the pressure or temperature. The crucial component was influenced by vibrating of the drill string while the well drilling was working. So the vibration of the device analysis was useful for improving the vibration resistance. In this paper, hybird method of finite element analysis and mode test is proposed to analyze the vibration capability of circuit board. , Practical hamp test is used to verfiy the the simulation model is reasonable via comparation of natural frequency.Through selecting different fixed and arrange method, we improved the natural frequency of the circuit board. We analyzed shock vibration of the circuit board and forecast the dangerous location of the circuit board to ensure safe running.