In this work, the load-bearing structure of a wood kiln is analyzed with the finite element method (FEM). The analysis is done with the program Inventor Nastran and consist of a linear stress and buckling analysis. The dimensions of the kiln can vary, therefore reference values are used where it is 32 m long, 12 m high and 10.5 m wide. The kiln consists of different zones that are identical to each other, these zones are separated with load-bearing structures. This structure is made up of stainless steel sheet metal with a thickness of 2-3 mm. To stabilize the kiln against wind forces, a support structure is attached on the side of the load-bearing structure. The requirements for the strength calculations have increased in the industry. The goal is to provide a FEM model that can perform and get a realistic result. This would also lead to get a better picture of whether there are any critical areas or parts and how important the support structure is for the stability of the kiln. A large model requires simplifications to reduce the size of the model and enable it to carry out the analysis. This means the elimination of non-structure components, symmetry by a plane, define contact surfaces, and mesh convergence. The loads acting on the kiln consisting of wind and snow are according to the Eurocode. It is proved possible to develop a model that could perform a realistic analysis using these simplifications. A large model consisting of many parts can create uncertainty in the analysis. Therefore, some parts need to be examined more carefully and some improvements in the FEM model is required. The weakest components in the model could be located where some reinforcement may be needed to secure the structural strength. The importance of the support structure function to strengthen the load-bearing structure of the kiln could be proven.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:kau-86299 |
| Date | January 2021 |
| Creators | Söderström, Simon |
| Publisher | Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013) |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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