客车铝合金车架设计与典型工况分析

应用轻量化材料如高强度钢和铝、镁合金等来替代普通钢制造汽车承载构件已成为发展趋势。本文以工业铝合金为材料设计了一种新型的轻型城郊客车车架,并建立有限元模型进行了多种典型工况的仿真分析。首先,基于CATIA进行了客车车架各零部件的设计,整体装配与校核;然后,通过简化模型、模拟连接等,在ANSYS Workbench中建立了合理的车架-悬架有限元模型;最后,模拟客车满载弯曲、制动等5种典型工况施加载荷与边界条件,进行有限元仿真,仿真结果表明该铝合金车架能够满足各典型工况的强度和刚度性能要求。

Design and analysis of an aluminum alloy bus frame under typical conditions

Lightweight materials such as high-strength steel, aluminum alloy or magnesium alloy applied as substitutions of plain steel to manufacture of bearing structures on vehicle have been an obvious tendency. Using industrial aluminum alloy as material, a new light bus frame was designed in this paper, and then finite element simulations under multiple typical conditions were implemented based on the reasonable finite element model. First, all the components of the frame were designed, assembled and checked in CATIA. Secondly, the frame-suspension finite element model was established in ANSYS Workbench after model simplification, connections simulation, etc. Finally, finite element simulations under totally five kinds of typical conditions such as full-load bending and emergency braking were accomplished, and the results indicate that the strength and stiffness of this new bus frame can satisfy the requirements of the typical conditions.