Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : rubber


The Effect of Rubber filled with Carbon Black in Design of Truck Tiressidewall Ricipe

Hussain J.M. Al-Alkawi; Dhafir S. Al-Fattal; Nabel K. Abd-Ali

Engineering and Technology Journal, 2013, Volume 31, Issue 2, Pages 197-216

One of the main requirements of the truck tire sidewall are flexing resistance, tensile strength and tear resistance, as well as resistance to weather conditions experienced by tires during use, which include exposure to sunlight and ultraviolet radiation. Therefore, the requirements and changing circumstances led to develop the design parts of tires, and sidewall is more susceptible to these conditions, where it will be studying the properties of truck tire sidewall produced by Al- Dewaniya Tires Factory- Iraq, according to the specifications designed by Italian Perilli Co. since about 20 years ago, which prompted to development the mechanical and physical properties of those components.
The present work aim to design stocks with high specifications, through the study of the impact of the substantial material (rubber) in truck tire sidewall recipe. Natural rubber, Standard Vietnam Rubber (SVR5) and synthetic rubber, Styrene-Butadiene-Rubber(SBR1502),also the introduction of a new type of synthetic rubber is Poly Butadiene (BRcis), filled with carbon black (N550) as a reinforcement agent with fixed loading percentage (51pphr),as well as other components such as accelerators, anti-oxidants, anti-ozonants and vulcanizing agent. Through laboratory testing found that stocks containing (NR/SBR/BRcis) blending with (40/60/-), (40/50/10) and (40/40/20) as a percentage loading has given good results in many tests including tensile, tear, compression, hardness and fatigue crack growth resistance.

Nonlinear Finite Element Analysis for Elastomeric Materials under Finite Strain

Mohsin Noori Hamzah

Engineering and Technology Journal, 2012, Volume 30, Issue 14, Pages 2401-2420

In this paper the finite element methodis used as a numerical techniqueto
investigatethe three-dimensional elastomeric materials (rubber or rubber-like
materials) under finite, or large, strains analysis.The non-linear element equations for
the displacement and pressure field parameters are formulated using the minimized
variational approach. Essentially, approximate solutions for the displacement and
pressure field parameters are obtained from the solutions of the two corresponding
sets of non-linear simultaneous equations via the nonlinear Newton-Raphson iterative
procedure. The basic iterative solution procedure convergence is further improved via
breaking the applied load down into load incrementwith optimized incremental steps.
Additionally,a complete finite element formulation is reported and detailed in this
work,and the mathematical complexities conjoined with such kinds of analysis are
simplified as possible.
Solving some numerical examples and comparing the results with that obtained
from some available results and ANSYS 12.0 showed that the current formulation of
the finite element methods is correctand the resulted program is capable for solving
incompressible elastomeric materials under finite strain. The formulation used for the
finite element derivations for large strain analysis gave satisfactory results as
compared with that of available results.