PSI - Issue 33

Imam Abdul Majid et al. / Procedia Structural Integrity 33 (2021) 35–42 Majid et al. / Structural Integrity Procedia 00 (2019) 000–000

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Table 3. The results of meshing process. Property

Setting

Scale Mesh Size Per Part

No

Average Element Size (absolute value)

15 mm Parabolic

Element Order

Create Curved Mesh Elements Max. Turn Angle on Curves (Deg.) Max. Adjacent Mesh Size Ratio

No 60 1.5 10 20

Max. Aspect Ratio

Minimum Element Size (% of average size)

This case study two fixed constrains in every front wheelbase and rear wheelbase with direction Ux, Uy, and Uz in fixed support. The boundary condition is defined in modelling, as shown in Fig. 3. The car chassis model is loaded by static forces from the car body and passenger load. For this model, the maximum loaded weight of car and passenger is 49,000 kg in vertical force (Y). The load is assumed as no-load in horizontal (X and Z), and a uniform load distributed obtained from the maximum loaded weight divided by the total length of the chassis frame. Detail loading of the model is shown in Fig. 4.

Fig. 3. Structural constraints in the designed chassis.

Fig. 4. Loading condition for the finite element analysis.

5. Results and discussion 5.1. Displacement contours

Displacement, in mechanics, distance moved by a particle or body in a specific direction. The displacement of the chassis and the location of maximum displacement of the AC Cobra Chassis is shown in Fig. 5. The results obtained at the maximum Total of displacement are 0.3359 mm and minimum 0 N. At Normal XX, the maximum result is 0.03646 mm and minimum -0.02396 mm. The Normal YY maximum result is 0.04867 mm and a minimum -0.3359 mm. Also, at Normal ZZ, the maximum result is 0.02109 mm, and the minimum is -0.02005 mm.