Method for determining strength of engine connecting rod

• Main Authors: LI ZHANXU, LU FANGJIE, PENG ZHIZHAO, LIU YAOYAO, JIA JINFENG, XING JINXIN, LIU YILE, LIU JUNYAN
• Format: Patent
• Language: Chinese; English
• Published: 22.06.2021
• Subjects: MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention belongs to the technical field of analysis and testing, and particularly relates to a connecting rod strength determination method. The invention discloses a method for determining the strength of an engine connecting rod. The method comprises the following steps: A, carrying out three-dimensional modeling; B, performing finite element grid division; C, defining a contact pair; D, defining material attributes; E, defining load and boundary conditions; F, setting working conditions and corresponding models; G, analyzing and judging; and H, analyzing working conditions and results of high-cycle fatigue analysis. A finite element calculation method is applied, and the engine connecting rod is calculated and analyzed through a computer. Compared with a test method, the method is low in cost, good in flexibility, short in period, high in precision and visual in stress result distribution, the strength of the connecting rod can be calculated in the engine design process and before prototype manufactur