Harri Katajisto

Author Archives: Harri Katajisto

Harri holds a Master’s Degree in Mechanical Engineering from the Helsinki University of Technology with a focus on lightweight structures. He has been the member of the ESAComp team since 2000 and joined Altair in 2017. He considers himself as a middleman working closely with industry, research and software development aiming to provide practical software solutions for the Composites Industry together with the Altair Composite Technology Team.

Thin-walled cylinders are sensitive to imperfections

Decreased buckling loads and geometrical imperfections are closely related for thin-walled cylinders. By definition, a geometrical imperfection is a deviation from the perfect cylindrical geometry. An example is shown in Figure 1. Geometrical imperfections have been demonstrated to have clearly … Read More

Making a laminate twist

The properties of fiber-reinforced composite structures can be tailored with layer orientations and stacking sequence. For example, you can design your laminate so that under a tensile load it twists, but at the same time it does not bend nor … Read More