Abstract
The article presents briefly findings in researching methods for determining dynamic stress of the bars in the main structure of gantry crane installed on the cap of bridge pier to install and launch SUPER-T girder. In order to study the dynamic stresses in the bars of the main truss structure of the gantry, the author first had to build a dynamic model, using Matlap software to solve the problem of dynamics with two cases cargo lowering combination combines braking and moving of gantry with cargo to find out the rules and values of dynamic cable tension, dynamic inertial force ( time-varying force), then consider these forces is the external force acting on the main truss structure model of the gantry, from which the author calculates the value of internal force and stress of each bar corresponding to the value of dynamic cable tension and corresponding dynamic inertia force. with two adverse working cases of the gantry. Using Matlap software to calculate the author has obtained a graph of internal force, stress changes over time of each bar in the main truss steel structure of the gantry. The findings of the research provided methods for determining the dynamic stress of the bars in the main structure of gantry crane, pointed out values and rules of change of the dynamic stress of the bars in the main structure of gantry crane. The findings of the research may be used to calculate fatigue, life-span of the main steel structures as well as other parts of the gantry crane
Subject
General Physics and Astronomy,General Engineering
Reference13 articles.
1. Azdiana, Noor, A., Sharatul, I., Nur, A. (2009). Vibration control of a gantry crane system using dynamic feed back swing controller. Journal of Mechanical Engineering and Technology, 1 (1).
2. Omar, H. M., Nayfeh, A. H. (2005). Gantry cranes gain scheduling feedback control with friction compensation. Journal of Sound and Vibration, 281 (1-2), 1–20. doi: https://doi.org/10.1016/j.jsv.2004.01.037
3. Frikha, S., Djemel, M., Derbel, N. (2018). A New Adaptive Neuro-sliding Mode Control for Gantry Crane. International Journal of Control, Automation and Systems, 16 (2), 559–565. doi: https://doi.org/10.1007/s12555-017-0070-x
4. Nguyen, T. L., Do, T. H., Nguyen, H. Q. (2019). Vibration Suppression Control of a Flexible Gantry Crane System with Varying Rope Length. Journal of Control Science and Engineering, 2019, 1–8. doi: https://doi.org/10.1155/2019/9640814
5. Hubinský, P., Kurilla, J., Palkovic, L. (2010). Estimation of the gantry crane natural frequency using MEMS accelerometer. AT&P journal PLUS1, 89–94.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献