Deep-draw experiments are performed on both glass and carbon fabric to better understand the origin of wrinkle growth during complex forming assess accuracy, robustness computational cost simulations engineering fabrics. During experiments, shape deformed blanks is digitised using two different non-contact measurement techniques (Structured Light Scanning Photogrammetry). The resulting digital ...

We propose a new model and algorithm to capture the high-definition statics of thin shells via coarse meshes. This predicts global, fine-scale wrinkling at frequencies much higher than resolution mesh; moreover, it is grounded in geometric analysis elasticity, does not require manual guidance, corpus training examples, nor tuning ad hoc parameters. first approximate shape shell using tension fi...

based on two-dimensional plane stress and bifurcation functional from hill's general theory in polar coordinate the critical condition for elastic wrinkling of the flange of a circular blank ( the wave number in the flange and wrinkled area) during the deep-drawing process are obtained analyticaly to improve the previous given results. in this analytical study, the elastic limitation of the mat...

The protein hydrophobin HFBII self-assembles into very elastic films at the surface of water; these films wrinkle readily upon compression. We demonstrate and study this wrinkling instability in the context of non-planar interfaces by forming HFBII layers at the surface of bubbles whose interfaces are then compressed by deflation of the bubble. By varying the initial concentration of the hydrop...

Curved aluminium extrusions are applied in a wide range of industrial applications. Because initially straight, an additional process is required to curve the product. Undesired wrinkling plate part at inner radius frequently observed during curving process. Wrinkling has already been extensively studied for rotary-draw bending This paper aims predicting conditions which hollow section can occu...