Engineering

Shape optimization is a process done on structures and the obtained results are displayed on figures. Below is a brief discussion of structures whose shapes have been optimized. In addition their increase and decrease dimensions are given. Optimization of shapes, which includes structural and vibration analysis, is a process done on structures with results being displayed in the above figure 14. Initial displacement dimensions include 2.224mm, which is lesser than the structure whose topography has been optimized as shown in figure 15. Figure 16 shows von-misses stress distribution, which is similar to the original structure.

The structure whose shape has been optimized has a maximum stress of 98.31 MPa, which is less than maximum stress found in structures whose shape has been optimized because they have a total stress of 136 MPa. In addition, its initial design has a total stress of 130 MPa, which shows a great reduction in the shape of structures that have been optimized. The stress is concentrated at the corners of frontal panels found in case structures of the mobile case. The decrease in total stress in approximately 28% in comparison with stress structures whose topography has been optimized. Two different points of excitation are used to analyze the vibrations of optimized structures. Example mode 5 contains two excitation points that have a natural frequency of 1031.81Hz, which are 121.39 above frequencies of structures that have optimized frequencies. The frequency is also very close to the frequencies of the original structures. The distinct structures are located 27.6, 96.1) and (25.3, 49.7) from the figure numbered 17. The points vary depending on where the force is applied which is commonly at the edges.