As the key component of piston reciprocation compressor, crankshaft falls under rather complicated load during the process of high-speed motion. And their static & dynamic characteristics exert great impact on the holistic capability of the compressor. Employing crankshaft of some certain compressor as its subject, this paper will cover the following contents: (1) thermodynamic theory of compressor and dynamic analysis of crank-connecting rod; (2) establishing three-dimension solid model of this type of com...