摘要
为解决某SUV车型在行驶过程中制动盘罩壳由于随机交变载荷激励引起的振动疲劳开裂问题,结合实际工程项目,基于Radioss的模态频率响应结果进行振动疲劳寿命数值模拟。结合仿真分析结果,提出一种"圆形凹坑"特殊结构改善制动盘罩壳安装孔局部区域刚度,达到结构优化目的。对比仿真分析及耐久试验结果表明,利用该分析方法不仅可以准确预测制动盘罩壳疲劳寿命薄弱区域,还可以利用"圆形凹坑"特殊结构提高部件刚度,起到结构优化设计的同时,还能大大减少项目开发成本,有效指导设计人员进行方案选定和问题整改。
To solve the fatigue damage problem of brake-disc splash shields of a particular SUV induced by random load excitation,their vibration-fatigue life is simulated based on Radioss modal frequency response results.According to the simulation results,a special structure called“round pit”is put forward for improving the local stiffness of mounting holes of the brake-disc splash shield for structure optimization.Comparison of the simulation results with fatigue testing results shows that the weak spots on the splash shield for fatigue life can be predicted accurately by using this method.Furthermore,the special structure“round pit”can be applied to increase the stiffness of components in order to optimize the structure design.Meanwhile,the project cost is efficiently reduced.
作者
吴帅
张晓艳
王德宸
孙玉
赵勇强
WU Shuai;ZHANG Xiao-yan;WANG De-chen;SUN Yu;ZHAO Yong-qiang(Technology Center of GreatWall Motor Company Limited,Baoding 071000, Hebei China;Hebei Automotive Engineering and Technology Research Center, Baoding 071000, Hebei China)
出处
《噪声与振动控制》
CSCD
2017年第5期128-131,共4页
Noise and Vibration Control
关键词
振动与波
罩壳
疲劳寿命
模态频率响应
结构优化
vibration and wave
splash shield
fatigue life
modal frequency response
structure optimization