Light electric transport such as electric bicycles (EB) are expected to be common means of short...
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Light electric transport such as electric bicycles (EB) are expected to be common means of short distance transportation in urban area. As the engineer of an EB firms you are tasked to come up with a frame design for such bicycle. There are numerous factors to consider when it comes to designing a bicycle frame including the weight of the frame, the maximum load it can carry, convenience / comfort of the users. Several designs are shown in Figure 1. Cruiser bicycle Commuter bicycle Commuter bicycle Mountain bicycle O Figure 1. Some existing EB frame designs In this task, you will come up with your own frame design including the material selection and then perform Finite Element structural analysis. The loading conditions on a bicycle can be extremely complex, especially when a rider is riding the bicycle over different rough terrain. In the assignment we consider a loading condition of a horizontal impact applied to the bicycle, simulating the effect of a low-speed, head-on collision into a wall or curb. The impact is modelled by 1000 N horizontal load. This case is one of the physical tests that manufacturers have to comply with before a bicycle is approved. Include the weight of the rider and the battery pack in your analysis. As the design engineers, you are asked to build the FE model of the bicycle frame. To accomplish this, you are required to: 1) Develop a Finite Element Model of the original frame design and manually calculate the nodal displacements and the stresses in each elements; 2) Develop FE MATLAB programs to calculate the frame displacements and stresses. Use these programs to answer (A), (B) and (C). The main program should also be able to display the deformed frame comparing the unloaded and loaded conditions.; 3) Build and analyse the frame in ANSYS WORKBENCH and compare the displacements and the stresses obtained in (2) with the ANSYS result in (2) and show the deformed shape and stress fields (see example below); State any assumptions you make in the analysis and justify them. Figure 2. Deformed and stress field of loaded bicycle frame. Light electric transport such as electric bicycles (EB) are expected to be common means of short distance transportation in urban area. As the engineer of an EB firms you are tasked to come up with a frame design for such bicycle. There are numerous factors to consider when it comes to designing a bicycle frame including the weight of the frame, the maximum load it can carry, convenience / comfort of the users. Several designs are shown in Figure 1. Cruiser bicycle Commuter bicycle Commuter bicycle Mountain bicycle O Figure 1. Some existing EB frame designs In this task, you will come up with your own frame design including the material selection and then perform Finite Element structural analysis. The loading conditions on a bicycle can be extremely complex, especially when a rider is riding the bicycle over different rough terrain. In the assignment we consider a loading condition of a horizontal impact applied to the bicycle, simulating the effect of a low-speed, head-on collision into a wall or curb. The impact is modelled by 1000 N horizontal load. This case is one of the physical tests that manufacturers have to comply with before a bicycle is approved. Include the weight of the rider and the battery pack in your analysis. As the design engineers, you are asked to build the FE model of the bicycle frame. To accomplish this, you are required to: 1) Develop a Finite Element Model of the original frame design and manually calculate the nodal displacements and the stresses in each elements; 2) Develop FE MATLAB programs to calculate the frame displacements and stresses. Use these programs to answer (A), (B) and (C). The main program should also be able to display the deformed frame comparing the unloaded and loaded conditions.; 3) Build and analyse the frame in ANSYS WORKBENCH and compare the displacements and the stresses obtained in (2) with the ANSYS result in (2) and show the deformed shape and stress fields (see example below); State any assumptions you make in the analysis and justify them. Figure 2. Deformed and stress field of loaded bicycle frame.
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Income Tax Fundamentals 2013
ISBN: 9781285586618
31st Edition
Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven L Gill
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