深井抗振仪器减振腔的减振仿真设计

深井抗振仪器工作在井下2000~4500m,工作时须承受聚能弹的爆破冲击,因此有效的抗振设计是实现该仪器在恶劣条件下工作的关键。减振腔是抗振仪器的3个减振环节之一,其动力学模型及其特征参数都比较复杂。在减振腔动力学简化模型的基础上,建立减振腔的4层动力学微分方程组,输入各层的等效虎克系数和等效阻尼,采用MATLAB软件对动力学微分方程组的仿真计算,来准确表达系统的输出响应特性。在清华大学力学实验室对减振腔进行了多组冲击载荷实验,试验结果与仿真输出基本一致,证明模型的建立和特征参数设计的正确性。

The simulation design of the deep oilwell shockproof tools' shock absorber cavity

The deep oilwell shockproof tools positioned at a depth of 2km to 4.5km bear the blast shock from the cumulative bombs, so that effective shockproof design is very important to achieve the jobs under the mal-condition. The shock absorber cavity is one of the three damper chains, and its dynamic motion model and the characteristic parameters is very complex. The paper bases on the simplified dynamic motion model of the shock absorber, builds its four layers differential equations, inputs different lays' equivalent spring parameters and damp value, and applies the MATLAB software to simulate and compute dynamic differential equations in order to describe the system output property. The test results of different groups of loads made in the lab of Tsinghua university uniform the simulation outputs, which shows that its dynamic simplified model and characteristic parameters are correct.