Structural Optimization And Process Design Of Compressor Connecting Rod

The connecting rod is connected with crankshaft and pistons. It is a components of the compressor to transfer power. In the compressor body is doing its complex plane motion along the center plane of the piston cylinder. The connecting rod alternating loads, ensure connecting rod has to meet various load changes periodically and good dynamic and static mechanical properties of fatigue strength and structural rigidity. That is an important factor to meet the compressor reliability, connecting rod design has become increasingly rely on the development of the computer simulation by finite element analysis has become an essential means of product structure design.Thesis ZW-8/8-12liquefied gas compressor for the study, the main force of its internal research links, optimization and process issues, as follows:(l)To describes the construction of the connecting rod and performance of the selected compressor. According to the structure of the selected machine to make the connecting rod motion diagram, It is concluded that the stress of the connecting rod. To design of the various components of the connecting rod and the establishment of a three-dimensional model of the various components and assemblies.(2)It was established model of every components of the connecting rod by using the SolidWork. The various parts and components assembly form a connecting rod assembly and some to optimize the processing of connecting rod structure parts, the structure of the analysis is to take up the computer’s memory.(3) According to the model of connecting rod, optional choose t divided tetrahedron mesh connecting rod, handle the bolts and other special parts. To ensure the grid rationality of mesh. Analysis of the forces of its parts. The quality of the connecting rod as the target variable-. the rod body thickness of the connecting rod> the rod body of groove depths the transition between the connecting rod small head with a rod body round radius as design variables. To makes the quality of the connecting rod to minimum and optimize he connecting rod size. According to the optimal solution for the relative size of the impact of the connecting rod, The connecting rod is re-established models and finite element analysis, and finally get a set of solutions re-established models and finite element analysis, and finally get a set of solutions from two to get the optimal solution.(4) To get the optimal solution of the connecting rod and modal analysis on the model, analysis of the free modal and constraint modal modes diagram under two conditions, To taking the first eight bands were analyzed and compared, It is get the resonant frequency and the frequency segment prone to bending and torsional vibration superimposed connecting rod.(5) For the optimal solution, and modify the design drawings modified its process flow diagram and the existing problems, To get new artwork correct based on the latest technology.