Roof fastening for refugee shelter

There are constant natural disasters and conflicts around the world. In these areas, thereis a great demand to temporary housing. Better Shelter is a Swedish organization thatoffers temporary housing units for aid organizations. The product they invest in the mostis a metal frame on which roofs and walls must be complemented with local materials.The metal structure has a good strength characteristic but poses a challenge on howevertries to attach roofs and walls reliably. Therefore, the assigner wants to create a fasteningelement that can be sent with the rest of the structure, and which not only facilitatesattachment of the roof, but also handles the loads that the home is assumed to endure.This work includes the design process of a fastening element that facilitates the fasteningof a corrugated galvanized metal sheet roof (CGI) as well as a linear analysis in ANSYS ofthe load capacity of the roof and the fastening. The fastening element that was decided toproceed with is the so-called J-connector which is sized with standardized bolt materialsand dimensions in mind.Since the linear analysis can only consider the material within the linear elastic limit, themodel could not make the accurate prediction results as the stresses surpassed the yieldlimit locally. Mesh refining around the stress concentrations combined with including thenon-linear response of the material is required. The change in the contact status need tobe included at places where plasticizing and buckling can occur. Since the yield limitwas surpassed close to connection points and it could be tolerated in reality, the suggesteddevelopment is constructing the physical prototype base on the proposed fastening elementand performing the experimental analysis