摘要
振动圆锥破碎机是实现超细破碎的节能型设备。振动圆锥破碎机待破碎的物料层填充在破碎机的动锥和定锥之间,利用动锥和定锥相对运动来破碎物料,同时物料层对动锥的运动也将产生反作用力。将物料层的作用简化为分段线性的接触力,将振动圆锥破碎机系统的运动简化为只考虑动锥刚体在水平面内运动,利用Lagrange方程,建立系统三自由度水平运动的模型。利用MATLAB软件,采用Runge-Kutta法对振动微分方程组进行数值计算仿真。研究了激振频率对系统动力学性能的影响。结果表明,物料层的作用使得系统刚度变大,固有频率增大;导致系统从单一频率的简谐运动变为了概周期的复杂运动。为进一步实现振动破碎机结构参数的优化奠定了基础。
The model of vibrating cone crusher was simplified as the model of locomotory cone moving in horizontal plane.The materials layers between the locomotory cone and immovable cone will affect the motion of locomotory cone.The dynamic equations were built with considering the effect of materials layers as piecewise linear contact force action.Then the dynamic equations were numerically of the solved.The result indicates the materials layers are the main sources of the nonlinearity of the system.The materials layers make the system behave complex motion instead of harmonic motion with single frequency,and affect fragmentation performance of the vibrating cone crusher.
出处
《振动与冲击》
EI
CSCD
北大核心
2011年第9期232-236,252,共6页
Journal of Vibration and Shock
基金
国家自然科学基金(11002046)
教育部留学回国人员科研启动基金资助项目
石家庄市科学研究与技术发展项目(05124093A)资助项目
河北科技大学校立科研基金(XL200934)
