Static and Buckling Studies of a Safety Ladder by SolidWorks Simulation

Mir Hayder1, Uriah Virgo2 and Cordel Gordon3

1Associate Professor, Department of Engineering Technology, Savannah State University,
3219 College St, Savannah, GA 31404
2Student, Civil Engineering Technology, Savannah State University
3Student, Civil Engineering Technology, Savannah State University

ABSTRACT
Simulation results of static and buckling analyses of a safety ladder conducted by SolidWorks simulation software are presented in this paper. At first, a four-step safety ladder was created. The frames on the two sides of the ladder were connected with the steps by pins. After creating the step, frame, and pin as SolidWorks part files, they were assembled to create the 3D safety ladder model. The material assigned for the two side frames and sixteen pins was aluminum alloy and that for the four steps was balsa wood. For static analysis, four sets of simulations were carried out with a 200lbs. load on each step separately. Results reveal that similar patterns of stress, strain, and displacement distributions are developed for all four ladder steps. The maximum stress was developed on the places where the pins are attached to the wood, and the maximum strain and defamation take place at the middle part of the steps. For buckling analysis, the simulation was carried out with the same amount of load, but only on the top step of the ladder. A buckling factor of safety of 26.38 was obtained, which indicates that the ladder is likely to withstand a load up to 26.38 times larger than what is applied, i.e. it will start buckling with a load of 5267 lbs. (critical load). A comparison with the static analysis, which yielded a stress factor of safety of 1.08, indicates that the ladder would yield before it would buckle.

Key words: Statics Analysis, Buckling, Stress, Strain, Factor of Safety (FS)

Cite this article:
Hayder, M., Virgo, U. & Gordon, C. (2019). Static and Buckling Studies of a Safety Ladder by Solid Works Simulation. European International Journal of Science and Technology, 8(9), 1-7.