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基于多学科联合优化的液压尾板轻量化设计
Combination optimization design of a hydraulic tailgate
2023-03-02 09:32
李建 崔震 郭继文 刘越 ()
针对某款商用车液压尾板的轻量化设计，使用多体动力学分析（MBD）和拓扑优化进行多学科联合优化。使用MotionView对液压尾板进行运动仿真，通过仿真确定4个关键举升状态的载荷值。将提取的载荷值分别加载到尾板本体铰接处和尾板基座铰接处进行结构的分析和拓扑优化。分别对单工况和复合工况拓扑后的结果进行解读，按照解读结果完成结构的重塑，并对重塑后的新结构进行刚强度校核。优化设计以降低重量为设计目标，同时兼顾性能的提升和成本的控制。新设计液压尾板本体结构较原结构刚度最高提升57%，强度最高提升12%；尾板基座结构相较于原结构刚度最高提升8.8%，强度最高提升25%；新结构整体降重25%，成本降低15%，达成轻量化设计目标。
For the hydraulic tailgate lightweight design of a commercial vehicle, multi-disciplinary optimization was carried out using multi-body dynamics analysis (MBD) and topology optimization. “MotionView” software was used to simulate the mechanical motion of the hydraulic tailgate. 4 key lifting states and related joint load values were determined through the simulation. The extracted load values were applied on the joints of the tailgate body and tailgate base structure respectively. And then structural analysis and topology optimization were implemented. Based on the optimization results for single and multi-load cases, remodeling of the structure was completed. The stiffness and strength performance verification were finished to ensure the reliability of tailgate. The optimized structure is designed to reduce weight, while taking into account the improvement of performance and cost control. The structural stiffness of the newly designed hydraulic tailgate body is increased by up to 57%, and the strength is increased by up to 12%. The structural stiffness of the tailgate base structure is increased by up to 8.8%, and the strength is increased by up to 25%. The overall weight of the new structure is reduced by 25%, cost is reduced by 15%. Lightweight design target is achieved.
来源：数字仿真论坛
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