Material parameter sensitivity analysis for intralaminar damage of laminated composites through direct differentiation

Computers & Structures, vol. 305, pp. 107584

Abstract

Understanding the effect of the material parameters variability on the mechanical response of laminated composites is of great importance for many engineering problems. Not only an accurate sensitivity analysis enables to estimate how much each parameter under consideration affects the response, but the linearization of the output provides also the possibility to, for example, use gradient-based optimization tools and to propagate in an inexpensive way the material uncertainties. In this paper, a material parameter sensitivity study is carried out in the context of continuum damage mechanics applied to predict intralaminar damage in laminated composites. The sensitivity w.r.t. the input material variables is estimated in a relatively inexpensive way from a single run of the Finite Element (FE) model. The results obtained provide a good understanding of the influence of the material parameters throughout the simulation. • Sensitivity analysis of the mechanical response of laminated composites. • Computationally efficient and accurate methodology employing a semi-analytical DDM. • Sensitivity analysis during simulation or after completion.

Authors 6

1. Paolo Minigher corresponding

   Universidade do Porto · Universitat de Girona · Institute of Mechanical Engineering and Industrial Mangement · Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial

   Affiliation as printed

   DEMec, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal

   INEGI, Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial, Rua Dr. Roberto Frias, 400, 4200-465 Porto, Portugal

   University of Girona, AMADE, Polytechnic School, Girona, Spain

2. Albertino Arteiro

   Universidade do Porto · Institute of Mechanical Engineering and Industrial Mangement · Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial

   Affiliation as printed

   DEMec, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal

   INEGI, Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial, Rua Dr. Roberto Frias, 400, 4200-465 Porto, Portugal

3. A. Turón

   Universitat de Girona

   Affiliation as printed

   University of Girona, AMADE, Polytechnic School, Girona, Spain

4. Javad Fatemi Aachen Airbus NL

   Airbus (Netherlands)

   Affiliation as printed

   Airbus NL, Leiden, the Netherlands

5. Ludovic Barrière

   IRT Saint Exupéry

   Affiliation as printed

   IRT Saint Exupéry, Toulouse, France

6. Pedro Ponces Camanho

   Universidade do Porto · Institute of Mechanical Engineering and Industrial Mangement · Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial

   Affiliation as printed

   DEMec, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal

   INEGI, Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial, Rua Dr. Roberto Frias, 400, 4200-465 Porto, Portugal