In my third year at HAMK, I have the opportunity to work on this module research project.

The research is a joint venture of three third-year Mechanical Engineering students. Our goals are to evaluate and design items from a given sample, using Reverse Engineering method. As team leader, my role is to manage and monitor the workload of the project and lead the team, at the same time, taking care of my own parts in the project as to evaluate the research object using CAD software and FEM analysis software, also to prototyping the fixture and setup for ultimate test.

The designing and evaluating process is made and learned by doing. An actual ultimate test is also held using own-made fixing figures. Then the results from the software and from the actual test are compared together. This turned out to be the project where I gained a lot of laboratory skills, leadership, and project management experience. Throughout the project, I familiarize myself with several programs such as ANSYS, GOM Inspect ...

Index result:

The result from the FEM report is shown as follows:

Actual ultimate test result and discussion:

The result from the actual test on the given sample is shown as follows:

At the point that the tested machine's applied stress is about 6 kN, fractures are found in the item. The tie-down strap is broken out from the tight bolts and then lifted, both the D ring and the strap are deformed, it is much smaller than the estimated maximum stress that the bolts could bear (29 kN per bolt, 58 kN for 2 bolts).

Conclusion: 

After the analysis, we followed the basic principles of machine dynamics. Stress-strain or force deformation relations such as Hooke’s law are applied to the behavior of the material. Finite element models can not only estimate the stresses but also utilize them to evaluate the failure criteria for each element. In this process, we specified the dimensions, selected the components and materials, and consider the reliability, operation conditions, and material properties.