【摘要】 平面滚珠轴承是一种应用于变翼面飞行器的结构，能够对变形翼面进行面外约束，并降低面内运动的摩擦阻力。本文提出了一种基于杆单元连接的平面滚珠轴承接触等效建模方法，通过杆单元弹性模量、接触面距离、单元长度系数对模型进行参数化表征，进而基于粒子群优化算法辨识得到等效建模参数。以典型伸缩翼结构为例开展了算例研究，分析对比了接触模型和等效模型的位移、应力、模态等静/动力学特性。研究结果表明：等效模型能够准确地反映变形翼面在不同位置下的静/动力学特性，并能够准确捕捉结构振型变化，建模偏差会随着翼面伸出长度的增加而降低。综上，采用本文提出的等效方法能够高效精确地分析结构在变形过程中的静/动力学特性。更多还原

【Abstract】 Planar ball bearings are a type of structure used in morphing wing aircraft to provide out-of-plane constraints for wing surfaces and reduce frictional resistance to in-plane motion. A contact equivalent modeling method for planar ball bearings based on rod element connection was proposed in this paper. The model is parameterized using the elastic modulus of the rod element,contact surface distance,and element length coefficient. Subsequently,equivalent modeling parameters are identified through a particle swarm optimization algorithm. An example study was carried out using a typical telescopic wing structure,and the static/dynamic characteristics(displacement,stress,modal,etc.) of the contact model and the equivalent model were analyzed and compared. The research results indicate that the equivalent model accurately reflects the static/dynamic characteristics of morphing wing aircraft at different positions and can accurately capture changes in structural modal shapes. Modeling deviations decrease with the increase of wing extension length. In summary,the proposed equivalent method in this paper allows for an efficient and precise analysis of the static/dynamic characteristics of the structure during the deformation process.更多还原