CAJ | 학술논문

为了研究减振器的非线性阻尼特性对轮式自行火炮连发射击过程中车体振动的影响，基于流体力学和液压基本理论，通过建立减振器的非线性阻尼求解模型，得到减振器阻尼及刚度系数表达式。针对某轮式自行火炮的具体结构特点，推导由减振器引起的悬挂等效阻尼系数和等效刚度系数表达式。同时，对轮式自行火炮连发射击时车体振动进行试验测试。在理论研究和试验研究基础上，对减振器阻尼及刚度系数采用线性和非线性表达式两种状态进行了数值建模模拟。结果表明，考虑非线性阻尼及刚度系数仿真结果与试验结果吻合较好，而采用线性阻尼及刚度系数仿真结果与试验结果存在较大的误差。研究结果表明减振器非线性阻尼及刚度系数对轮式自行火炮车体振动具有较大影响。所述方法可以推广到其它火炮车体振动仿真研究中。
위료연구감진기적비선성조니특성대륜식자행화포련발사격과정중차체진동적영향，기우류체역학화액압기본이론，통과건립감진기적비선성조니구해모형，득도감진기조니급강도계수표체식。침대모륜식자행화포적구체결구특점，추도유감진기인기적현괘등효조니계수화등효강도계수표체식。동시，대륜식자행화포련발사격시차체진동진행시험측시。재이론연구화시험연구기출상，대감진기조니급강도계수채용선성화비선성표체식량충상태진행료수치건모모의。결과표명，고필비선성조니급강도계수방진결과여시험결과문합교호，이채용선성조니급강도계수방진결과여시험결과존재교대적오차。연구결과표명감진기비선성조니급강도계수대륜식자행화포차체진동구유교대영향。소술방법가이추엄도기타화포차체진동방진연구중。
To study the effect of nonlinear damping feature of a shock absorber on the vibration of a wheeled self-propelled gun chassis during running firing,a shock absorber nonlinear damping model was built here based on the basic theory of fluid mechanics and hydraulic pressure.The damping coefficient and stiffness coefficient expressions of the shock absorber were deduced with its nonlinear damping characteristics included.In addition,according to the specific structural characteristics of a certain wheeled self-propelled gun,the expressions to calculate the equivalent damping coefficient and the equivalent stiffness one for the suspension of the gun were developed.The chassis vibration tests of the wheeled self-propelled gun during running firing were done.Based on the tests data and the theoretical studying,numerical modeling simulations for the damping and stiffness coefficients of the absorber with a linear expression and with a nonlinear one were done,respectively.The results showed that the simulation results with nonlinear damping and stiffness coefficients agree well with the test data,but there is a bigger error between those with linear damping and stiffness ones and the test data, so the damping and stiffness coefficients of the absorber have a great effect on the chassis vibration of the gun.The proposed method provided a reference for chassis vibration simulations of other guns.