转炉夹持器间隙及倾动加速度对自调螺栓冲击力的影响

利用三维建模软件并结合转炉实际尺寸进行建模,运用多体动力学与有限元方法对转炉进行动态仿真。对自调螺栓以及球形垫片进行子模型细化计算,将炉体与自调螺栓接触面的位移作为子模型边界条件,在稳定的热胀状态下进行瞬态分析,通过危险位置应力曲线分析夹持器间隙、倾动加速度对自调螺栓冲击力的影响。结果表明,夹持器间隙越大,自调螺栓所受的冲击力就越大,自调螺栓的振动发生在倾动加速度较大的倾角位置。

Influence of the converter gripper clearance and tilting acceleration on the impact force of self-adjusting bolt

Based on the real size of the converter, 3D modeling was carried out by using 3D modeling software. Dynamic simulation of the converter was conducted by means of multi-body dynamics and finite element simulation. The displacement of the interface between the converter body and the self-adjusting bolt was taken as the boundary condition of the sub-model, and transiently analyzed under the state of stable thermal expansion. The stress curve of dangerous positions was employed to analyze the influence of the gripper clearance and tilting acceleration on the impact force of self-adjusting bolt. The results show that larger clearance of the gripper brings about greater impact force on the self-adjusting bolt, and the vibration of self-adjusting bolt takes place when it is in the position of dip angle where tilting acceleration is comparatively large.