Vehicle is the important think to get the better live for peoples of sociaty. Currently the development of vehicles is increasing rapidly, especially vehicles that use friendly energy for enviroment such as electrical energy. The electric vehicles have been used for commercial cars as well as for competitions. The race vehicle is required to develop new technologies in the particular vehicle. The electrical Vehicle Researces has been carried out include the systems such as drive train, Cassis, frame, batree, system control etc, however in this paper will be discuss design of electric vehicles Frame for Competition. The proces design will be accordance with the rules competition, there is dimensions, weight, power of vehicle etc. the vehicle specification requarenment will be created concept design, then embodiment design and detail design, theres will be figure out the strength and ergonomics frames to satisfy the safety criteria. Results of design obtained dimensions of frame 1800x800x1000 mm, 35.7 kg of weight, and material frame JIS G 3445 STKM 11 is obtained for static load load while stress of maximum impact load is 91.6 Mpa, deflection 0.61 mm and safety factor 2, 1.
The energy potential of low-head water can be exploited by using the horizontal axial flow to produce rotation in the turbine, which is then converts it into electricity in the generator. The types of blades that are commonly used are propeller types, cross-flow types, and Kaplan types. In this research, a prototype of micro-hydro power plant with a capacity of 20 W will be developed, which utilizes the potential of water flow with a head < 0.5 m. This research begins with observing water flow, including flow characteristics and parameters such as speed, head, and available discharge. The next step is to design the power plant, which includes the design of a very low head horizontal axial turbine, turbine structure and accessories, turbine blade rotor, power transmission system, generator selection, and control system. The manufacture of the main components of the turbine, reservoir, diffuser, etc., is carried out before integrating the entire micro hydropower system. The result shows the physical model of the very low-head turbine prototype produces power at the highest Head (0.4 m) of 11.02 W, while at the same Head, the computational fluid dynamic (CFD) results produce the most significant power with 13.55 W.
The development of an electric vehicle chassis is one step in the design process of a vehicle, especially for crossover vehicles that are being designed. The chassis design of the vehicle must have a chassis that is solid and can sustain all the loads that occur on the chassis, such as passenger loads, electric motors and so on. In the chassis design process, stress analysis is needed to verify the strength of the chassis if the loads that are applied. Stress analysis begins with making an initial model of an existing chassis using CAD then stress analysis using FEA Solidworks software. Stress analysis includes static and crash load. The results of the analysis under static load conditions obtained a maximum stress that occurs at 206 MPa, a factor of safety = 1.69, and a deflection of 0.4 mm where the chassis deflection due to bending is less than 1 mm. Keywords: chassis, EV, strength simulation, FEA.
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