Expert Lecture Spotlight | Prof. Philippe Boisse
Fibrous Shell Approach & 3D Second Gradient Modeling for Textile Composite Draping
In composite manufacturing, accurate draping simulation of textile reinforcements is essential to reduce costly trial-and-error and optimize forming processes. Yet, classical modeling approaches often fall short when applied to fibrous materials.
In this insightful lecture, Prof. Philippe Boisse introduces advanced modeling strategies tailored to the unique deformation mechanics of fibrous reinforcements, focusing on:
Fibrous Shell Approach
Unlike conventional shell models, this method captures the quasi-inextensibility of fibers, enabling accurate prediction of deformation behavior—especially the rotation of material normals—which is crucial for forming simulations. This approach aligns well with experimental observations, unlike traditional Kirchhoff-based theories.
3D Second Gradient Modeling
For textile reinforcements with appreciable thickness, 3D simulations become necessary. Prof. Boisse shows that first-gradient (Cauchy-type) models often fail to capture the true mechanics of fiber deformation. By incorporating second gradient formulations and fiber curvature effects, the model achieves a more physically realistic representation of draping behavior.
These innovations not only improve simulation accuracy but also enhance our ability to design better composite forming processes, reducing defects and improving part quality.
Now available on the cdmHUB YouTube channel as part of the Global Composites Expert Webinar Series.
