you must check out the Structural Mechanics Module within the whole Package,
below is the description
The Structural Mechanics Module is dedicated to the analysis of components and subsystems where it is necessary to evaluate deformations under loads. It also contains special physics interfaces for the modeling of shells, beams and trusses.
Physics interfaces in this module solve stationary and dynamic models, including nonlinear problems, and let you perform eigenfrequency (i.e. modal), parametric, quasi-static and frequency-response analyses. 3D solid as well as 2D plane stress, plane strain
and axisymmetric analyses allow the specification of elastoplastic and hyperelastic material laws, large deformations, contact, piezoelectric analysis, and thermoelasticity.
The Structural Mechanics Module works in tandem with COMSOL Multiphysics and the other discipline-specific modules to couple structural analysis into any multiphysics phenomenon.
for more information go to www.comsol.com
i will try to download it for u