摘要
为验证某款发动机罩板的结构强度和固有特性是否满足设计要求,文章利用HyperWorks软件对该发动机罩板进行了有限元建模、静力学分析和约束模态分析。通过分析发现它的刚度满足设计要求,但是由于它的低阶固有频率偏低,与发动机激励频率接近,因此发动机罩板会产生较大的振动。在后续改进设计中应采取减振措施,尽量减小发动机罩板的振动。
In order to evaluate whether the structure strength and natural characteristics of a engine hood meet the design requirements, finite element modeling, static analysis and restraint modal analysis of engine hood is conducted by using HyperWorks. It concludes that its stiffness meets the design requirements, because of its low natural frequency that is approach to driving frequency of engine, the engine hood will cause large vibration. It is necessary to take measures to reduce the vibration of engine hood in the subsequent improvement design.
出处
《汽车工程师》
2011年第9期39-42,共4页
Automotive Engineer
