the purpose of this study is to determine the effect of vierendeel panel width and vertical truss spacing ratio in an inelastic behavior of the stf system due to earthquake loads. the stf system is applied to a six-storey building that serves as apartments [2]. the stf system is used in the building in the transverse direction (n-s direction), while in the longitudinal direction (w-e direction)...

Turbo-expanders are used in industries for cooling, liquefaction and also power generation. An important part of these turbines is the variable angle nozzle causing a nonlinear behavior that is not well recognized among the prime movers of the dispersed generators. In this paper, at first, the turbo expander system is evaluated in details and its nonlinear behavior is investigated. Then, the sy...

investigations on vibration behaviors of railway track systems were attempted in this research. this was made by conducting a comprehensive field investigation into the free vibration of track systems and response of tracks to train moving loads. in-situ modal analysis was used in a railway track field as an efficient method of investigating dynamic properties of railway track systems. natural ...

Background: When a severe earthquake ground motion hits the structure even if it doesn’t collapse may undergoes inelastic deformations. Steel infilled with precast panels becomes less efficient when subjected to large lateral loads like strong wind and earthquake. Hence assessment of actual performance steel frames provided infills in event is essential. Methods: In current study, prototype mod...

Abstract Flood-induced scours near the pier foundation are an adverse phenomenon that may cause collapse of bridges. However, in seismic design bridges, scour impact is commonly ignored when evaluating response. This study aims to quantify effect flood-induced on nonlinear static and dynamic behaviors typical reinforced concrete For this regard, three-dimensional finite element models two- thre...

A pushover analysis method based on semirigid connection concept is developed and the colliding bodies optimization algorithm is employed to find optimum seismic design of frame structures. Two numerical examples from the literature are studied. The results of the new algorithm are compared to the conventional design methods to show the power or weakness of the algorithm.

Abstract Indonesia is located at the confluence of three main tectonic plates which makes it one countries with highest earthquake risk in world. Recorded experiences has showed that cause damage to buildings particularly multi-storey building structures. The purpose this study determine performance level reinforced concrete structures using a performance-based design method based on ATC-40 and...

while significant advances have been made on the blast analysis, applications of nonlinear analysis of structures under explosion have been limited to the frames and structural behavior of bridges subjected to blast is an issue that has attracted attention of researchers in recent years. nonlinear dynamic analysis can be lead to the most accurate responses of the structure under blast but the u...