Linear and Nonlinear Structural Analysis

TSI has extensive experience applying linear and nonlinear modeling and analysis methods to both static and dynamic systems.

Our engineers are experienced with all forms of mechanical and environmental loading, including;

  • Point and Distributed Loads
  • Gravity and Body Acceleration
  • Pressure
  • Inertia Relief
  • Rotational Dynamics
  • Large Deformation / Metal Forming

We have in-house experts in implicit and explicit solvers, including ALE and coupled solutions. This broad background allows us to provide detailed, accurate and reliable results together with insight into what the results mean in everyday terms. At TSI, "FEA" is a lot more than just "pretty pictures".

Specific areas of expertise include;

Advanced Materials

Agarose Agarose

Accurate prediction of structural behaviour requires accurate and reliable material models.

TSI has extensive experience with a range of materials including traditional metals and plastics. We also have experience with non-traditional advanced materials where we can perform in-house testing, or work through our partner network of labs and universities.

Typical materials which we deal with include:

  • Metals - elastic, plastic, strain-rate dependance and failure
  • Plastics and polymers
  • Rubber and high Poisson's Ratio materials (adhesives)
  • Foams
  • Visco/hyperelastic materials
  • Tissues
  • A popular class of advanced materials is composites. TSI has completed linear and nonlinear simulations involving FRPs (carbon-, kevlar- and glass-fibre), epoxies and thermoplastic matrices.

    Typical applications involve optimization, mass reduction and design integration.

Contact Dynamics


Most modern CAE problems involve nonlinearity of some type, and contact is a key area of interest. Contact is a standard feature in our models, including interactions such as body-to-body impacts, bolt preloading and stabilizing surfaces.

Typical applications include:

  • High deformation problems
  • Sliding surfaces such as cams
  • Bolt loading and joint dynamics
  • Metal forming
  • Impact
  • Thermal conductivity

Complex / Multi-Component Assemblies

Many of our projects involve tens or hundreds of components or sub-assemblies. This often involves developing innovative ways of breaking up jobs to maximize insight and effectiveness.

Fastening and Joining

Weld Joining 1 Weld Joining 3 Adhesives

TSI has developed a variety of standardized and validated modeling techniques for standard and complex joints, allowing us to effectively simulate large assemblies of components under a variety of loading conditions.

Developed and validated methods include;

  • Bolted Joint Calculations and Procedure Development
  • BoltCalc software for advanced bolted joint analysis
  • Adhesives - thick and thin bond lines with low and high Poisson's ratio materials
  • Welded Joints
Authorized by the Association of Professional Engineers of Ontario to offer professional engineering services.