Application of Variational Iteration Method for Dropping Damage Evaluation of the Suspension Spring Packaging System

Figure 3

Dropping damage boundary curves of the system when the suspension angle 𝜙₀=60^∘, 65^∘, 70^∘, and 75^∘ and the product fragility (a) 𝐴_𝑐=10 and (b) 𝐴_𝑐=15. 𝑉: the dimensionless dropping shock velocity; 𝛽: the system parameter.

(a)

(b)