CAJ | 학술논문

为了解所设计的转向节疲劳寿命是否能够满足设计要求，文章首先提取了悬架典型极限工况运动时转向节各连接点所受的力，并对其进行强度分析；根据分析结果，得出该转向节在不平路面工况所受的应力最大，因此需计算不平路面下转向节的疲劳寿命；用M atlab对道路不平度曲线进行了模拟，然后将道路不平度曲线输入多体动力学软件，得到悬架转向节在该工况的载荷谱；最后根据二轴性分析结果，对转向节进行多轴疲劳寿命分析，分析结果验证了该转向节设计的合理性。
위료해소설계적전향절피로수명시부능구만족설계요구，문장수선제취료현가전형겁한공황운동시전향절각련접점소수적력，병대기진행강도분석；근거분석결과，득출해전향절재불평로면공황소수적응력최대，인차수계산불평로면하전향절적피로수명；용M atlab대도로불평도곡선진행료모의，연후장도로불평도곡선수입다체동역학연건，득도현가전향절재해공황적재하보；최후근거이축성분석결과，대전향절진행다축피로수명분석，분석결과험증료해전향절설계적합이성。
To understand whether the designed steering knuckle fatigue life can meet the design re‐quirements ,the force of suspension steering knuckle when it moved in typical limit working condition was obtained .Then the strength analysis was done .According to the analysis results ,the steering knuckle stress under uneven road surface condition was the largest ,so the fatigue life of the steering knuckle under that condition needed to be calculated .Road roughness curves were simulated based on Matlab ,and imported to the multi‐body dynamics analysis software ,so that the load spectrum of steering knuckle under that condition was obtained .According to the two‐axial analysis results ,the steering knuckle multi‐axial fatigue life was analyzed .The fatigue analysis results verified the ration‐ality of the structure design of the steering knuckle .