Trailer Suspension Rig for Virtual and Physical Testing
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The objective of this Master's thesis was to finalize the construction of a physical torsion bar suspension test rig, and perform analytical calculations and virtual simulations related to the rig. This thesis is a continuation of the candidates Project Thesis. The basis for this work are two exams from TMM4112 Machine Elements of 2009. The rig is to be used by lecturers and students in several courses at the Department of Engineering Design and Materials, NTNU.The physical rig has been instrumented with numerous sensors and equipment, and a PC with Catman Data Acquisition software to analyze the physical static and dynamic suspension response. Physical testing of the rig was conducted and evaluated. These results laid the foundation for comparing physical test data with analytical calculations, and computer simulations.Multiple Finite Element Analysis (FEA) solvers has been utilized to simulate the quasi-static- and dynamic response of the suspension system. The analytical calculation model presented in the exams has also been revised to improve the correlation with the physical rig.All the design and constitution work of the rig has been performed by the author of this thesis. The final result is a turnkey-product rig, ready to be used in lectures. Student exercises related to the rig was also created for the courses; TMM4112 - Machine Elements, TMM4135 -Analysis and Assessment Based on the Finite Element Method, and TMM4155 - FEA in ME.