Optimization of the Dump Truck Frame Structure Based on the Sensitivity Analysis
-
摘要: 建立了某自卸车车架有限元模型,通过模态试验和模态有限元分析得出了车架固有频率,并且验证了该模型的准确性和合理性。依据车架结构的灵敏度分析结果来选择设计变量,在保证车架低阶模态频率和强度的前提下,以车架轻量化为目标优化车架构件厚度,实现了车架质量8.0%的降低幅度;在控制车架质量和强度的条件下,以提高车架低阶模态频率为目标,实现了车架结构的低阶模态频率和动态性能的提高。Abstract: The finite element model of a dump truck frame is established, and the natural frequency of frame is obtained through modal test and modal analysis, and the accuracy and rationality of the model is verified.On thefoundation established, two schemes are carried out.Firstly, choosing the design variables based on the sensitivityanalysis of frame structure and ensuring low grade modal frequency and strength of the frame, the thickness of framecomponent is optimized so as to achieve the goal of light weighting and reduction of the frame weight by 8.0%; secondly, in control of the quality of frame and strength, the lower grade modal frequency and dynamic performance oftruck frame structure are enhanced in order to advance low grade modal frequency of the frame.
-
Key words:
- dump truck frame /
- modal analysis /
- sensitivity analysis /
- light weighting /
- low grade modal frequency
-
[1] Benedyk J. Light metal in automotive applications [J]. Light Metal Age, 2000, 58(10): 34~35 [2] 高云凯. 汽车车身结构分析[M]. 北京: 北京理工大学出版社, 2006 [3] 雷明准, 陈剑, 陈心昭, 王建楠. 灵敏度分析方法在车身轻量化中的应用[J]. 汽车工程, 2009, 31 (7): 683~684 [4] 邓晓龙, 徐敏, 陈剑, 顾镭, 杨万里. 发动机缸体固有频率对加强筋厚度的灵敏度分析[J]. 内燃机, 2007,(4): 68~71 [5] 石琴等. 基于灵敏度分析的车身结构优化设计[J]. 合肥工业大学学报, 2009, 32(7): 955~956 [6] 何丽君. 基于有限元法的重型载货车车架轻量化研究[D]. 合肥: 合肥工业大学, 2010 [7] 荣安琪. 重型卡车驾驶室模态灵敏度分析与结构优化[D]. 长春: 吉林大学, 2009 [8] 刘丹. 重型载货汽车车架的有限元分析及优化[D]. 合肥: 合肥工业大学, 2009 -
![WeChat](/fileJXKXYJS/journal/article/jxkxyjs/2013/4/PIC/wechat_cn_5330.jpg)
计量
- 文章访问数: 156
- HTML全文浏览量: 36
- PDF下载量: 4
- 被引次数: 0