Weight-strength optimization of wooden household chairs based on member section size

Weight-strength optimization of wooden household chairs was performed based on the member section size in this study. Member sizes Scotch pine (Pinus sylvestris) and Oriental beech (Fagus orientalis) were optimized resulting re-manufactured tested under cyclic â??front to backâ?, â??back frontâ? â??backrestâ? loads according American Library Association (ALA) specification. Finite element method (FEM) MATLAB nonlinear programming utilized for optimization. Firstly, internal forces moments acting each analyzed by FEM order obtain maximum critical stresses type member; then, cross-sectional members determined Gradient Descent method, all constraints treated with Logarithmic Barrier Functioning. As a result, minimum determined, performance tests determine whether strong enough carry acceptable loads. According results, both could be significantly reduced. The reduction 32 % total weight volume while 16 without sacrificing required domestic usage ALA. In conclusion, used is suitable furniture frames, making it lighter reducing material costs.