The Impact of Sliding Blades in a Rotary Compressor

The purpose of this study was to analyze the impact of blades with slots in a rotary compressor. The equations for contact forces were derived from Newton's law. Updated moving Lagrangian descriptions with the hybrid technique and the Newark time integration method were used to determine the nodal displacement vectors. The finite element method was used to analyze the contact forces and the stresses of blades. The maximum blade contact force of 2.3 KN was larger than the maximum static force of 1 KN. The maximum blade impact Von Mises stress of 12.3 Mpa that occurred at the contact point was greater than the previous calculated static stress of 5.15 Mpa. Hence, the impact effect was significant. Experimental modal analysis was also used to determine the first and second natural frequencies of blades.

[1]  J. Padovan,et al.  Finite element analysis of steadily moving contact fields , 1984 .

[2]  Mitsuhiro Fukuta,et al.  Mathematical Model of Vane Compressors for Computer Simulation of Automotive Air Conditioning Cycle , 1995 .

[3]  Ferdinando Auricchio,et al.  AUGMENTED LAGRANGIAN FINITE-ELEMENTS FOR PLATE CONTACT PROBLEMS , 1996 .

[4]  J. G. Malone,et al.  A parallel finite element contact/impact algorithm for non‐linear explicit transient analysis: Part I—The search algorithm and contact mechanics , 1994 .

[5]  F. Amirouche,et al.  Finite element modeling of contact conditions in multibody system dynamics , 1993 .

[6]  Klaus Knothe,et al.  Modelling of Railway Track and Vehicle/Track Interaction at High Frequencies , 1993 .

[7]  Y. Huang.  Analysis of the roto-cooler air-conditioning system , 1995 .

[8]  Peter Wriggers,et al.  Finite deformation post‐buckling analysis involving inelasticity and contact constraints , 1986 .

[9]  Chang-Koon Choi,et al.  A gap element for three-dimensional elasto-plastic contact problems , 1996 .

[10]  Y. Huang,et al.  The stress and deflection analysis for the radial blades of the RCAC system , 1997 .

[11]  Peter Wriggers,et al.  A two-level iteration method for solution of contact problems , 1986 .

[12]  Kim Tiow Ooi,et al.  A computer simulation of a rotary compressor for household refrigerators , 1997 .

[13]  Mohan D. Rao,et al.  Analysis of modal parameters of adhesively bonded double-strap joints by the modal strain energy method , 1996 .