TRANSIENT STRESS ANALYSIS OF SIMPLY SUPPORT BEAM EXCITED UNDER MOVING LOAD | ||
| Al-Qadisiyah Journal for Engineering Sciences | ||
| Article 1, Volume 9, Issue 3, September 2016, Pages 331-348 PDF (0 K) | ||
| Authors | ||
| Saddiq Emad Sadiq; Dr. Ali Raad Hassan | ||
| Abstract | ||
| ABSTRACT In this paper, an experimental and numerical study of dynamic deflection and dynamic bending stress of beam structure under moving load has been carried out. The moving load is constant in magnitude and travels at a uniform speed. The dynamic analysis of beam-type structure is done by taking three (39.24, 58.86 and 78.48) N concentrated loads; each one of them travels at two uniform speeds(0.2 and 0.25) m/s . The theoretical analysis is based On Euler- Bernoulli theory and Fourier series solution. A finite element model of a beam vibrating under moving load is established by ANSYS software. The comparison between the numerical dynamic stresses of beam via ANSYS software with the experimental results showed that the percentage error of (15%). Effect of the speed and load variables on the dynamic stress and dynamic deflection is investigated. It is concluded that the influence of variable speed on the dynamic deflection and dynamic bending stress is more than the effect of variable load on them. On the other hand, the dynamic bending stress is more sensitive to the variable speed and load than the dynamic deflection. Dynamic bending stress and dynamic deflection due to moving load could become significantly higher than those obtained with the stationary loads, thus they must be considered. | ||
| Keywords | ||
| Key Words; Euler; Bernoulli theory; Fourier series solution; Moving Load | ||
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