CAJ | 학술논문

孔底直线电机冲击器具有效率高、易于井下控制的优点，可广泛应用各种地质条件。这种新型冲击器钻进中直线电机定子和动子之间是往复直线运动的，在长期碰撞作用后，应力波会造成直线电机冲击器和部分关键部位（如减震槽末端）的疲劳破坏。采用 Pro ／E 软件对直线冲击电机进行三维建模，然后基于疲劳寿命预测的相关理论，利用ANSYS Workbench 有限元分析软件，进行冲击应力和虚拟疲劳仿真分析，在较短的时间内获得电机冲击器的预测疲劳寿命、寿命安全系数及危险部位等信息。并根据仿真中问题，研究了采用特殊滑动轴承结构、增加薄壁壁厚和末端增加减震环的改进方法，有效地解决了冲击器疲劳强度和寿命问题。
공저직선전궤충격기구유효솔고、역우정하공제적우점，가엄범응용각충지질조건。저충신형충격기찬진중직선전궤정자화동자지간시왕복직선운동적，재장기팽당작용후，응력파회조성직선전궤충격기화부분관건부위（여감진조말단）적피로파배。채용 Pro ／E 연건대직선충격전궤진행삼유건모，연후기우피로수명예측적상관이론，이용ANSYS Workbench 유한원분석연건，진행충격응력화허의피로방진분석，재교단적시간내획득전궤충격기적예측피로수명、수명안전계수급위험부위등신식。병근거방진중문제，연구료채용특수활동축승결구、증가박벽벽후화말단증가감진배적개진방법，유효지해결료충격기피로강도화수명문제。
When a linear motor impactor works in underground,the reciprocating straight line motion exists between its stator and mover.After long-term impact action stress wave can cause fatigue damage at the end of the shock rod damping groove of the linear motor impactor.Using Pro /E software to build a three-dimensional model for a linear motor impactor,and based on the theory of fatigue life prediction,ANSYS Workbench finite element program was used to simulate its impact stress and fatigue.In a shorter period,the electrical shock rod fatigue life prediction,its life safety coefficient and dangerous positions of the impactor,etc were of obtained.It was shown that the proposed method is a quick and effective method;based on simulations,many improvement measures are presented to solve the etrength and fatigue problems of linear motor impactors.