Analysis of Self Supported Steel Chimney as Per Indian Standard
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2014, Vol 4, Issue 7
Abstract
Most of the Industrial chimneys are tall structures with circular cross-sections. Such slender, lightly damped structures are prone to wind-exited vibration. Geometry of a self supporting steel chimney plays an important role in its structural behaviour under lateral dynamic loading. This is because geometry is primarily responsible for the stiffness parameters of the chimney. However, basic dimensions of industrial self supporting self supporting steel chimney such as height, diameter at exit, etc., are generally derived from the associated environmental conditions. Manholes are provided at the bottom of the chimney for inspection purpose of the chimney. The presence of manhole reduces the cross section area and hence the stiffness of the chimney. In the present study investigates the stresses, deflection and mode shapes of the chimney due to the presence of an inspection manhole. Maximum Von Mises stress, top deflection and mode shapes were calculated using finite element software ANSYS. The results show that, the due to the presence of manhole, the stresses are increased by approximately 1.5 times for the chimney and frequency is decreased by approximately 1.12 times.
Authors and Affiliations
B. Tharun Kumar Reddy , S M Abdul Mannan Hussain , Ramu Parnati
Keywords
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