关键词: 刚柔耦合系统, 钳夹车, 动态仿真, 子结构模态综合

Abstract: To reduce the integration size of flexiblebodies and satisfy the precision requirements of their interaction constraints, an interfacetransaction technical strategy and corresponding preload-analysis methodology were proposed, in which the motion characteristics of flexiblebodies' constraints were manifested. Since Characteristic Constraint Modals (CC-Modal) represented the main characteristics of complex static-deformation of flexible-bodies' interfaces, all of them must be retained. Therefore, according to their interaction analysis, the complicated constraints of flexible-bodies were classified as the main constraints and subsidiary constraints. The main constraints were implemented by the least constraint modals, and the subsidiary constraints were approximately established by inner-force constraints. Based on the specific deformation constraints, the rational truncation of normal modals was defined before the Component Mode Synthesis (CMS) modals were solved. Since the pre-deformation of flexible-bodies, the preload analysis of rigid-flexible hybrid system could be done only in the stiffening coupling-form of subassemblies or parts. Rigid-flexible-coupling simulations of D35 Schnabel wagon showed that by the application of the above technical strategy, not only the inner-force analysis results complied with dynamical stress measures, but also the stability of flexible-bodies' friction-constraints was validated.

Key words: rigid-flexible-coupling system, Schnabel wagon, dynamical simulation, component modal synthesis