Topology Optimization has been an effective tool for weight reduction and performance design and has essential applications in automobile industry. The main objective of this paper is to design a lighter weight bell crank and brake pedal than the existing design which is generally used in the automobile parts. The newly optimized design of bell crank and brake pedal is compared with the existing design. The CAD model of the bell crank and brake pedal is modeled using SOLIDWORKS software and the analysis of the newly optimized model is carried out using the Altair INSPIRE 9.5 . Using the above methodology, a light weight bell crank and brake pedal model is designed and the FEA analysis is used for obtaining the maximum and minimum value of displacement, % of yield, tension/compression, shear stress and von mises stress on the optimized design. The results of the design reflect that the weight of the bell crank has been reduced to 140 grams which is about 24% less weight then the existing design and the optimized weight of the brake pedal is reduced from 363g to 211g.

No abstract

No abstract

High Power LED (HPLED) lights are popular today in industrial, residential, and consumer applications. In this work, under natural cooling considerations, on a commercial (size 17.85x17.85x 3mm) heatsink base, a novel spokes fin model was introduced and the temperature has been investigated and compared with rectangular and circular fin models. Using a commercial FEA tool, the effect of heat transfer has been explored for a single and six HPLED arrays integrated on the top of the heat sink base and for different fin lengths, about 60mm, 70mm, and 80mm and junction temperatures 130⁰C, 110⁰C, 90⁰C, 70⁰C, and 50⁰C. The results revealed that the novel spokes fin is effective at about 4.72% (6°C) on the upper part of the fins and 5.87% (13°C) on the lower part of the fins. The heat dissipation from the HPLED junction to the atmosphere is effective using novel spokes compared to rectangular fins for both single and six HPLED array configurations. At the same time, the rectangular fin is effective in dissipating the heat for a single HPLED operation compared to the circular fin about 2.85% on the upper fins, 3.66% on the lower fins and has an equal dissipation effect while used for six HPLED array configurations. During the simulation, the mesh independence test is conducted and the radiation effect is also considered.