Effect of non-uniform blast load on dynamic response of simple structural elements | |
| Author | Caldera, Hollupathirage M.M. |
| Call Number | AIT Caps. Proj. no.CIE-15-51 |
| Subject(s) | Blast effect Structural analysis (Engineering) |
| Note | A capstone project report submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Engineering Civil and Infrastructure Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Caps. Proj. ; no. CIE-15-51 |
| Abstract | The purpose of presenting this thesis was to evaluate the dynamic response of steel beams, when subjected to a non-linear blast load. Altogether through the study, sixty-three steel beams were subjected to a test, with the three scale distance 9:494m= 3 p kg, 6:345m= 3 p kg,and 2:713m= 3 p kg. Regarding 57.9m, 48.8m, and 33.09m standoff distance with respect to 227kg, 454kg, 1814kg T.N.T charge weights. W27258,W18119,W40278 was used as a beam cross section, with 15ft, 20ft, 25ft, 30ft, 40ft, and 45ft seven different beam lengths. A992 steel was used as a beam casting material. The characteristics of the blast wave, including reflected pressure and positive phase duration were obtained from the Kingery table data. The main purpose of the research was to obtain the steel beam deflection when it was subjected to a non-linear blast load. All steel members were analyzed using single degree of freedom method and the finite element model. Results revealed the variation of the beam deflection when it was subjected to a different magnitude non-linear blast loads regarding a simple support, fixed support and cantilever beams. The results of dynamic model were used to generate the beam deflection graph with time, which could be used to identify the critical blast load for the beam and the performance of the beam regarding different type of blast waves. KEYWORDS: Blast loads; Dynamics; Explosions; Finite element analysis; Single-degreeof- freedom model; Steel beams; reflected pressure; positive phase duration; deflection; simple support beams; fixed support beams; cantilever beams. |
| Year | 2015 |
| Corresponding Series Added Entry | Asian Institute of Technology. Caps. Proj. ; no. CIE-15-51 |
| Type | Project |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Civil and Infrastructure Engineering (CIE) |
| Chairperson(s) | Hathairat Maneetes; |
| Examination Committee(s) | Punchet Thammarak;Tian Boon Soh;Teraphan Ornthammarath; |
| Degree | Capstone Project (B.Sc.)-Asian Institute of Technology, 2015 |