CAJ | 학술논문

摘要:建立了493车用柴油机缸孔变形的整体接触关系模型,提出了缸盖垫的非线性组合模型及缸套圆环模型.对缸孔在缸盖螺栓预紧力下的变形进行数值模拟,并在相同状态下进行静态测量.模拟结果表明:对于4缸柴油机而言,第二缸与第三缸变形的方向和大小均相似,而第一缸与第四缸则各不相同.静态测量结果显示:各横截面的变形趋势及最大变形位置与模拟结果基本相同,变形值误差为3%～12%.采用模拟计算和试验测量相结合的方法,可以获得缸孔变形的全面信息,为优化结构设计提供依据.同时也可对模拟模型和边界条件的正确性进行标定和验证.
적요:건립료493차용시유궤항공변형적정체접촉관계모형,제출료항개점적비선성조합모형급항투원배모형.대항공재항개라전예긴력하적변형진행수치모의,병재상동상태하진행정태측량.모의결과표명:대우4항시유궤이언,제이항여제삼항변형적방향화대소균상사,이제일항여제사항칙각불상동.정태측량결과현시:각횡절면적변형추세급최대변형위치여모의결과기본상동,변형치오차위3%～12%.채용모의계산화시험측량상결합적방법,가이획득항공변형적전면신식,위우화결구설계제공의거.동시야가대모의모형화변계조건적정학성진행표정화험증.
An integral contact model was established to analyze the cylinder bore deformation of model 493 automotive diesel engine. A non-linear combined model of cylinder head gasket and a cirque model of cylinder liners were put forward . The numerical simulation and static measurement were performed under cylinder head bolts pretightened. The simulated results show that the deformation direction and magnitude for the second and the third cylinder are similar and those for the first and the fourth cylinder are individual. The deformation trend and the max. value position in transverse sections obtained in static measurement are basically the same as the simulated results, the errors are within range of 3 % to 12 %. Using the numerical simulation method combined with the static measurement comprehensive information on cylinder bore deformation may be achieved, which provides the basis for structural optimization designing, and the model and boundary conditions can be calibrated and verified thereby.