Value Engineering (Optimization)
Mechanical and structural engineers have always strived to make as efficient use of material as possible, e.g. by making structures as light as possible yet able to carry the loads subjected to them. In the past, the search for more efficient structures was a trial-and-error process. However, in the last two decades computational tools based on optimization theory have been developed that make it possible to find optimal structures more or less automatically. Due to the high cost savings and performance gains that may be achieved, such tools are finding increasing industrial use. PASOFAL gives appropriate solutions to all three classes of geometry optimization problems of mechanical structures: sizing, shape and topology optimization. These is including concrete and steal structures s well as smart materials focusing on problem formulations and numerical solution methods. it is shown that structural optimization is a very efficient design tool that can be applied on realistic buildings. PASOFAL experts utilize a highly efficient evolutionary algorithm in solving the optimization problem for special cases. For example in seismic design optimization, PASOFAL evaluates seismic design procedures for three-dimensional (3D) frame structures using structural optimization techniques. The evaluation can meet the requirements of different seismic design codes including but not limited to ASCE, EC, IBC, UBC, FEMA, NEHRP, etc. where procedures based on both linear and nonlinear time-history analysis are adopted. In order to simulate seismic actions realistically, suites of both natural and artificial ground motion records are used by our expert engineers. The advantages of using more elaborated seismic design procedures, unlike the commonly used simplified design approaches, is based on a detailed simulation of the structural behavior; designing with less material cost combined with better seismic performance are obtained.