Static analysis and material selection for development frame model on static analysis energy saving car type urban diesel

The weight of the vehicle has a significant impact on the motor's efficiency because the motor has to work harder. When driving at a certain speed, the vehicle form design is very concerned with optimizing the engine power provided by the engine through the process of burning fuel into thrust, traction, and vehicle stability. The chassis design process begins with selecting the frame's shape, followed by manual calculations and stress analysis simulations using Autodesk Inventor software. While for the feasibility check of the welded joints it is carried out using the Non-Destructive Test (NDT) method of liquid penetrant and developer. The results of the calculation of the static frame obtained the largest stress with a value of 34.06 MPa, and the results of the static simulation obtained the largest stress of 33.17 MPa that occurred in the main rod with a displacement of 0.9057 mm. With the use of 6061 aluminum material, a safety factor value of 3.64 is generated based on the value of the greatest stress and displacement that occurs in the frame, and it can be said that it is already in a safe condition. For visual testing, the results of the weld joint have the largest porosity with a diameter of 1.6 mm. Based on the ASME VIII Div 1 Appendix 8 standard, the defects in the weld joint are still acceptable.