Magnetoelasticity combines two different phenomena of magnetism and
elasticity and in this thesis it is studied in a polymer gel material.
Polymer gels are soft materials and when they are embedded with colloidal
size magnetic particles they respond to externally applied magnetic fields
and exhibit various deformation modes. In this thesis the
magnetoelasticity of gels is studies from the three fronts of theory,
computation and
experiment to clearly demarcate the realms of the same. The behavior of
the magnetoelastic gel is studied using the principle of energy
minimization. The inputs for this theoretical work come from the extension
of the micromagnetics theory. Numerical algorithms have been developed
that computationally implement the energy minimization in magnetoelastic
gel. For the experimental magnetoelasticity the strong particle size
effect that was observed from the computational predictions is validated.