多模块平台集成化箱体式连接器力学特性及试验研究

Study on mechanical property and experiment of integrated case-typed connector with multi-module platform

以两模块平台集成化箱体式连接器为研究对象,研究此类连接器的力学特性,探究箱体式连接器的应力分布状态以及重要力学参数。以弹性接触方程为基础,采用罚函数方法,建立连接器本体、钢轴与轴承座之间的接触关系,结合模型试验,验证所提出接触计算方法准确性,并进一步对连接器半对称结构进行极限强度分析。分析结果表明:连接器的纵向和垂向的极限承载力约为40000kN,其纵向弹性刚度约为3×10^9N/m,垂向弹性刚度约为1.5×10^9N/m。对连接器应力分布进一步分析表明,连接器主体结构的水密舱壁为主要承力构件,其轴承孔周边区域为应力集中的主要区域,当荷载较大时,轴承孔周围会率先发生屈服破坏,因此,连接器带孔水密舱壁的材料强度是影响连接器整体极限强度的主要因素。

In order to analyze the mechanical property of integrated case-typed connector with double-module platform, the research of the connector is done.Based on elasticity contact equation, penalty function is used.The contact relationship between the connector, steel shaft and shaft block is established based on the model test, and the comparative analysis of the test and finite element calculation is finished based on contact mechanics to verify the accuracy of FEM.The connector s ultimate strength is analyzed.The results show that the ultimate capacity is 40 000 kN in longitudinal and vertical directions, the stiffness is 3×10^9 N/m in longitudinal direction, and stiffness is 1.5×10^9 N/m in vertical direction.And the stress concentration is near the hole of the watertight bulkhead of the connector.When the load increases, the watertight bulkhead starts to yield, so the bulkhead of the connector is the most important component of the connector.