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Uniaxial Deformation Characteristics of NR/BR Blended Rubber Under Large Compression Strain

K. SRIDHARAN and E. SANKAR

The compression deformation behavior of elastomeric materials under large strain is still far from being understood today. A substantial body of research work on rubber blocks compressed between rigid plates has been developed, although many of the problems remain unsolved. Compression and shear deformation behavior of vulcanizates of natural rubber blend with different filler have been evaluated experimentally in this investigation for their nonlinear characteristics. The maximum bulge radius obtained by this method has been checked for its consistency with the established analytical models and are in good agreement. A significant increase in contact area has been observed in the images under large compressive strains. The compression and shear deformation behavior of rubber blocks under higher strain which have been evaluated experimentally could further support the currently adopted approximate analytical methods.