Activity

Innovation is a challenging task today: we want to provide you with the best answers to your questions.

We often find out that we need both a deep understanding of the world where we all live in and make use of virtual spaces. A successful project needs a model of the physics involved, providing information to the processing system and state of the art computer systems.

We decided to provide you with all of this by using a powerful synergy: state-of-the-art software competences, prototyping capabilities, physical modeling.

Alter Ego Engineering is a company specialized in the field of civil engineering and mechanical engineering: its core business is numerical simulation.

We also have strong skills in software development, so we can help you with many kind of innovative technologies in this field.

In addition to our engineering activities, we also offer project management services.

Mechanics and CFD

Nonlinear analyses

Quasi-static analyses in the non linear domain:

  • Plasticity
  • Large deformations
  • Contact
  • Buckling
Cable clip in a progressive contact with a table

Clip in progressive contact with a table; loading by cables through the holes.

Vibrations and dynamics

Damper normal mode

Third normal mode of a damper

  • Natural or forced response
  • Transient analysis
  • Dynamic sub-structuring

Thermo-mechanical analysEs

  • Heat diffusion
  • Thermal deformation
  • Linear and nonlinear material properties
Heat shrink-fit of two pipes

Heat shrink-fit between two pipes, color-map by Von Mises stresses.

Failure scenarios for materials and parts

  • Damage models
  • Crack propagation
  • Fatigue analysis
Fatigue damage accumulated under cyclic load

Fatigue damage accumulated under cyclic loadings

Computational Fluid Dynamics

Computation steps of a disk in an hot fluid

Thermal-hydraulic analysis of a disk cooled by an air flow

  • Thermal-hydraulic analyses
  • Monophasic laminar flow
  • Monophasic turbulent flow
  • Thermal transfers (conduction, convection, radiation)

Civil Engineering

Structures

  • Assessment of the margins of existing buildings, for example in case of earthquake or other exceptional events
    • Response spectrum modal analyses
    • Nonlinear static analyses (pushover)
    • Linear nonlinear dynamics by direct time integration
    • Nonlinear dynamics by direct time integration
  • Comparison of different reinforcement solutions for existing buildings
  • Comparison between different designs
  • Evaluation of new technologies (reinforcements, new materials, ...) and certification support
  • Study of the service behavior of structures taking into account long-term deformations
  • Study in the construction phase taking into account early age properties of concrete

Specific analyses

    • Fire analyses
    • Estimation of leakage in reservoirs (porous walls or localized flaws)
    • Infiltration by rising damp in building walls
    • Thermal analyses of buildings

Underground works

    • Geomechanics
    • Analyses of rock and soil behavior taking into account:
      • Interstitial pressures (poromechanical approach)
      • Influence of temperature