Mechanical Event Simulation of Drop Testing for Toy Product
Toys that are free from drop failures normally take a long time to develop. It is often time and cost consuming after the production tooling is built to detect drop test failure. This paper introduces a new drop testing analysis method for Toys. The method uses a simple approach with a local analysis that based on the linear and non linear finite element analysis. Modeling and transient drop analysis of a pre-school toy is used as a case study to demonstrate the method. The impact analysis of the product hitting the solid concrete floor after a free fall is presented. The analysis focuses on the deformation of the housing for a product with electronic circuit and mechanical mechanism inside. Experimental data has been obtained for drop simulation of the housing and its correlation with the plastic material properties. The stress and strain of the housing during drop impact tests are noted. The effects of the material properties to the housing deflection under drop/impact shock have been investigated. Numerical results are compared with experimental results to validate the method.
Chengyu Jiang, Geng Liu, Dinghua Zhang and Xipeng Xu
A. Y. K. Yam et al., "Mechanical Event Simulation of Drop Testing for Toy Product ", Materials Science Forum, Vols. 532-533, pp. 993-996, 2006