184
N. V. S. S. Sagar et al.
Fig. 3 Static structural analysis for the basic model
3 FE Analysis
During motion, structural elements of quadcopter are subjected to thrust forces and
gravitational forces [6]. For the finite element analysis, the designed parametric
model is imported and meshed using an element size of 0.02 mm. Static structural
finite element analysis is carried out to check the model for its strength for an allup weight of 2 kg. From the results, maximum equivalent stress of 0.3 MPa and
maximum deformation of approximately 0.02 mm is observed as shown in Fig. 3.
4 Structural Optimization
4.1 Design Optimization
Design Optimization aims at modifying the input parameters that satisfy the given
constraints for achieving the required objective. Hence, three parameters namely
frame height, curvature and shell thickness are taken as input parameters for the
optimization problem as mentioned in the Table 2. Minimization of mass and deformation with limiting stress of 10 MPa are taken as objective functions. Hence, a
factor of safety of 4 is utilized while defining the optimization problem.
N. V. S. S. Sagar et al.
Fig. 3 Static structural analysis for the basic model
3 FE Analysis
During motion, structural elements of quadcopter are subjected to thrust forces and
gravitational forces [6]. For the finite element analysis, the designed parametric
model is imported and meshed using an element size of 0.02 mm. Static structural
finite element analysis is carried out to check the model for its strength for an allup weight of 2 kg. From the results, maximum equivalent stress of 0.3 MPa and
maximum deformation of approximately 0.02 mm is observed as shown in Fig. 3.
4 Structural Optimization
4.1 Design Optimization
Design Optimization aims at modifying the input parameters that satisfy the given
constraints for achieving the required objective. Hence, three parameters namely
frame height, curvature and shell thickness are taken as input parameters for the
optimization problem as mentioned in the Table 2. Minimization of mass and deformation with limiting stress of 10 MPa are taken as objective functions. Hence, a
factor of safety of 4 is utilized while defining the optimization problem.