Stiffened plates are employed in various engineering structures including aerospace, civil, naval, etc. These may be subjected to harmonic loads. Therefore, it is essential understand the response of a cracked stiffened structure. This study presents effects crack location on free vibration and plates. For this purpose, horizontal vertical cracks modelled throughout fixed from two-side The anal...

Cracks cause to change dynamic response of beams and make discontinuity in slope of the deflection of the beams. The dynamic analysis of the Euler-Bernoulli cracked beam on the elastic foundation subjected to the concentrated load is presented in this paper. The stiffness of the elastic foundation and elastic supports influence on vibrational characteristics of the cracked beam. The Dynamic Gre...

paddy de-awning using a de-awner increases the uniformity and flow rate of paddy grains through the orifices of hoppers, bucket elevators and chutes. in this study the effects of paddy variety, rotational blade speed and moisture content on performance of a prototype de-awner machine were investigated. the experiment was conducted in a factorial design with three factors, variety (hashemi and b...