CAJ | 학술논문

针对某发动机开发过程中出现的薄壁件结构振动及噪声较大的问题,应用有限元、多体动力学相关软件,对发动机表面振动水平进行评估.通过发动机弱点分析,确定优化方向,进行缸盖罩、正时罩和机油盘三大溥壁件结构优化,最终得到合格的优化样机.台架试验验证结果证明了仿真优化方案的合理性,同时,优化后的发动机达到了开发目标.
침대모발동궤개발과정중출현적박벽건결구진동급조성교대적문제,응용유한원、다체동역학상관연건,대발동궤표면진동수평진행평고.통과발동궤약점분석,학정우화방향,진행항개조、정시조화궤유반삼대부벽건결구우화,최종득도합격적우화양궤.태가시험험증결과증명료방진우화방안적합이성,동시,우화후적발동궤체도료개발목표.
In order to fulfill the vibration targets of the engine system with good NVH performance,the numerical simulation of the whole system is carried out by simulation software which is based on finite element method (FEM) and multi-body dynamics method respectively.By means of baseline analysis results evaluation,the structural weak points on head cover,timing cover and oil-pan are found.Researching on these weak points,some possible optimization potential is decided.After several optimization loops,the final engine status is obtained.Test results of optimized prototype meet the acoustic targets and prove the reliability of numerical simulation as well.