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Abstract:
Based on
the distortion relation of Maxwell viscoelastic model and the volume
change relation of the elasticity in the slab shell materials, a
mathematical model of visco-elastic thin plate for bulging deformation
in continuous cast slab is established. Using the corresponding
principle between elasticity and viscoelasticity, an analytical solution
of bulging deformation in slab shell is obtained. Compared with the
design formula for the continuous casting machine of Baoshan Iron and
Steel Plant and other current design formula, the formula consists of
the elastic deformation, viscous deformation and coupled deformation
between elastic deformation and viscous deformation, and it may solve
the bending deformation and bulging deformation of every point in slab
shell at any instant. In addition, the influence of relaxation time of
slab materials (characteristic value of creep) on bulging deformation of
slab shell is also discussed.
Key words:
Continuous
cast slab Mathematical model of the visco-elastic thin plate slab
Bulging deformation Corresponding principle between elasticity and
viscoelasticity
CLC No: TF777.1
国家自然科学基金资助项目、机械工业部教育司基金资助项目. Received 20000127,
received in revised form 20000720
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