As for the failure model, which utilizes the cohesive zone model, a failure surface is established and two proposals of how to determinate the crack angle are investigated.
Within the continuum model, two hardening functions are investigated and various size effects in the mechanical response, both from experiments and simulations, are examined and supported by new theory. The implementation consists of two parts: the continuum model and the failure. The thesis begins with some introductory chapters which describes the background of the problem as well as the theory needed for the implementation. Hence, it is proposed to establish a model that can simulate failure in paperboard in order to get a better understanding of the mechanisms and ultimately, prevent any cracks from initiating. (More) It has been shown that during certain steps in the packaging process, the paperboard is prone to forming in-plane cracks. Solid Mechanics Abstract It has been shown that during certain steps in the packaging process, the paperboard is prone to forming in-plane cracks. In-plane fracture analysis of paperboard using XFEM