摘要
针对某型重卡底盘系统结构整体改进后,车架安装孔位的变化致使板簧支架固定约束减少以及制造工艺的需改进等问题,企业要求在保障原有结构的使用功能和使用精密铸造工艺的基础上,对板簧支架进行更优的结构设计,并且不能增加其质量。首先根据原有模型的结构以及安装孔位的变化,确定其基本的结构模型;以此结构为优化对象,在极限工作的状况下,以降低结构质量为目标,以结构强度为约束,对支架结构进行拓扑优化设计;依据拓扑优化的结果,应用铸造工艺和设计经验进行再次设计,可得到最后的优化设计结果。优化后结构,在满足原有功能的前提下,设计出精密铸造的优化模型,达到了企业需求目标,这对重卡新型支架类零件的结构优化设计有重要的参考价值。
To solve the problem with the optimization design of spring bracket structure in heavy-truck because of improvement of whole chassis structure.lt based on the addressing in actual assembly which because of reduced constraint and changing in installation holes of chassis frame and improved manufacturing processes. The optimized structure based on the enterprises demand of without changing the usage of the original premise. The better optimized structure achieve the design aim of not add any weight under the process requirements of investment casting.According to the structure of the original model and change in the installation holes, its initial structure model was determined. In extreme conditions, the minimum mass were defined as the objectives ,the strength conditions for constraints is to achieve the topology optimizalion. According to the topological result, through the further design of method combined with the casting process and design experience, the fired comprehensive optimization design was achieved. The optimized structure not only is in line with business process requirements while meet the original premise, but also investment casting process target. There was important reference values for the improvement of bracket structure.
出处
《机械设计与制造》
北大核心
2017年第3期129-132,共4页
Machinery Design & Manufacture
基金
山西省高等学校科技创新项目资助(180012-117)
山西省科技攻关项目(20150311023-2)
关键词
板簧支架
拓扑优化
结构优化
精密铸造
Spring Bracket
Topology Optimization
Integrated Optimization
Investment casting
