CAJ | 학술논문

考虑了刨头与滑架之间的水平和竖直间隙，通过点到直线的距离来进行碰撞检验的方法，构造了刨头与滑架接触碰撞判别条件。采用非线性弹簧阻尼接触力模型，建立了间隙条件下的刨头三自由度碰撞振动动力学模型，并采用龙哥库塔法进行数值仿真分析，分析表明间隙条件下刨头与滑架之间产生了单点、两点、三点碰撞；刨头与滑架各接触点的最大碰撞力随着竖直间隙的增大而先增大随后降低，随着水平间隙增大而逐渐增大。采用 RecurDyn 对刨头动力学模型进行了仿真，其结果与理论分析相吻合。
고필료포두여활가지간적수평화수직간극，통과점도직선적거리래진행팽당검험적방법，구조료포두여활가접촉팽당판별조건。채용비선성탄황조니접촉력모형，건립료간극조건하적포두삼자유도팽당진동동역학모형，병채용룡가고탑법진행수치방진분석，분석표명간극조건하포두여활가지간산생료단점、량점、삼점팽당；포두여활가각접촉점적최대팽당력수착수직간극적증대이선증대수후강저，수착수평간극증대이축점증대。채용 RecurDyn 대포두동역학모형진행료방진，기결과여이론분석상문합。
Horizontal clearance and vertical one between plough head and sliding framework were considered.The criterion of contact-impact between plough head and sliding framework were established with the collision detection method using the distance between a point and a line.The plough head's dynamic equation with 3-DOF vibro-impact under clearance conditions was established by using a nonlinear spring-damper contact force model.The numerical simulation was performed by using Runge-Kutta method.The results showed that there are single-point impact,two-point impact and three-point impact between plough head and sliding framework under clearance conditions;the maximum collision force at each contact point between plough head and sliding framework firstly increases and then decreases with increase in vertical clearance,and increases with increase in horizontal clearance.The plough head's dynamic model was adopted for simulation with RecurDyn.The results agreed well with those of the theoretical analysis.