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Uncertainty decision support

La simulation numérique est un outil permettant de réduire les coûts et les temps de développement en étudiant les comportements de modèles numériques en lieu et place (ou en complément, en amont) des traditionnels prototypes. Cependant, en dépit de la fidélité croissante de ces modèles, il subsiste des écarts importants entre théorie et réalité. On sait désormais que ces écarts sont dus à des hypothèses de modélisation qui ne sont pas en accord avec la réalité. Ces hypothèses sont en fait entachées d’incertitudes, et il est souvent impossible de les réduire à une description déterministe (figée).

In this section

  • Introduction

    Introduction to the uncertainty consideration in mechanical engineering and problem positioning.

  • Uncertainty quantification

    The quantification of uncertainties combines a set of models coming from probability theory and from associated statistical tools which permit their construction using observable data.

  • Uncertainty propagation

    The uncertainty propagation in computer simulation models is the core business of PHIMECA Engineering. With the solid expertize of its collaborators in high-performance computing (HPC), PHIMECA Engineering is able to automate complicated algebraic calculation chains to urge them on intensively (that is, for a large number of input parameters) to explore them and provide the expected answer in the time limits.

  • Reliability based design optimization

    The response calculation or the system probability of failure variance represented by the model is not an end in itself ; it is just a performance indicator. Often, our customers want to take a decision (to proportion structural elements, to sample a maintenance plan) in agreement with the goal formulated by the ordering customer (the client or the competent safety authority). PHIMECA Engineering has developed a series of tools to address its concerns.

PHIMECA Cournon

Centre d'affaires du Zénith
34 rue de Sarliève
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Tél. : (00 33) 4 73 28 93 66
Fax : (00 33) 4 73 28 95 78

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F-75012 Paris
FRANCE
Tél. : (00 33) 1 58 51 18 02

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Mentions légales

PHIMECA engineering is an engineering company specialized in the optimization, the reliability and the robustness of products and structures.
Its goal is to provide solutions for robust engineering based on solid scientific foundations, entrepreneurial spirit and moral values shared by all its collaborators.