|
Abstract: The
rubber in a screw-pump’s stator is not only susceptible to damage, but
also to affect a screw-pump’s working performance by the conjugate
situation between its stator and rotor. Recently, the effective method
has been not found for testing the deformation and forced state of the
rubber of a stator under a real working condition. The deformation
principle of an inner contour line of the rubber is studied mainly and
its stress and strain state subordinately. For a screw-pump’s working
situation, its forced state and deformation principle is researched
firstly under an even inner pressure and secondly under a working
pressure difference and under different assemble between its stator and
rotor. The stress state and deformation principle of a screw-pump’s
stator has been obtained by FEM analysis software (ABAQUS) under
different working conditions. The stresses and strains of the stator and
displacements of its inner-contour line under 3D model and plane strain
model is verified to be almost coincident. Therefore, the plane model
can replace 3D one and improve analysis efficiency.
Key words: Screw-pump
Stator Rubber FEM Deformation
CLC No: TG156
Received 20030616, received in
revised form 20030915
|