【摘要】 建立了某重型商用车驾驶室的有限元模型,进行了计算模态分析,并对驾驶室结构进行了拓扑优化。根据优化的结果,提出了3种改进方法,并通过比较,选用增添加强板的改进方案。然后对新增的加强板厚度进行尺寸优化。最终的结果表明,结构优化后,驾驶室1阶模态频率由17.952Hz提高到了22.200Hz,弯曲刚度和扭转刚度也都有改善。更多还原

【Abstract】 A finite element model for the cab of a heavy-duty commercial vehicle is established,its computational modal analysis is conducted,and a topology optimization is performed on cab structure.Three improving schemes are put forward on the basis of optimization results,from which the improving scheme of adding reinforced plates is chosen through comparison.Then a size optimization is carried out on the thickness of new reinforced plates.The final results show that after structural optimization,the first modal frequency of the cab is raised from 17.952Hz to 22.200Hz with its bending stiffness and torsional stiffness also improved.更多还原