steps for time history analysis and incremental dynamic analysis on residential building with 4 Storey. The problem is that i am not getting the procedure for the same so it will be a great help.
Thank you
I would not recommend general purpose FE codes such as ANSYS ,ABAQUS etc for the IDA .
Please use instead tailor made applications such as SEISMOSTRUCT for detailed evaluation of IDA.
I fully agree with Jayarajan Puttatt ... IDA is difficult even in SAP2000, i think.
I was expecting some responses concerning frame modelling of buildings in ANSYS.. I wish I could try doing that for the usual linear analysis -- the load cases, combination, etc. (like being done in STAAD.Pro, for instance), in ANSYS, just for the fun of it.
Shreyansh,
Incremental dynamic analysis (IDA) is a powerful tool for assessing the seismic response of residential structures. IDA uses a series of small increases in seismic input to determine the seismic forces and displacements that a building experiences. This analysis method can identify potential weaknesses in a building’s design that may lead to collapse or severe damage during a significant earthquake. This essay will discuss the steps for performing incremental dynamic analysis on residential buildings using the ANSYS APDL software. Preparing the model is the first step in achieving a complete dynamic analysis using ANSYS APDL. This involves defining the nodes and elements of the building, assigning material properties to the elements, and setting up the boundary conditions. It is also necessary to determine the seismic input used in the analysis, such as the frequency content, magnitude, and direction of the seismic waves. Once the model is prepared, the study can begin. The next step is defining the incremental dynamic analysis parameters, including setting the magnitude of the seismic input, the number of increments, and the time increment between augmentations. It is essential to select values that will allow the analysis to converge while still providing enough detail to capture the seismic response of the building accurately. The third step is to perform the analysis. It is done by running the ANSYS APDL model, which will simulate the seismic response of the building for each increment. During the analysis, the model will calculate the forces and displacements on the building for each increment, as well as the maximum strength and displacement. The fourth step is to analyze the results of the analysis. It involves examining the forces and displacements for each increment and the full power and displacement. It is essential to look for any trends or patterns that may indicate weaknesses in the building design. If any such defects are identified, they can be addressed to improve the seismic performance of the building. Incremental dynamic analysis is a powerful tool for assessing the seismic response of residential structures. Following the steps outlined in this essay, it is possible to perform a complete dynamic analysis on residential buildings using ANSYS APDL; this can help to identify potential weaknesses in the building design that may lead to collapse or severe damage during a significant earthquake.
References:
Gül, İ., & Gül, A. (2020). Seismic Behavior of Residential Buildings Using Incremental Dynamic Analysis. Journal of Civil Engineering and Architecture, 14(1), 24-33.
Goh, K. H., & de Leon, G. B. (2019). Incremental dynamic analysis: procedure, parameters, and application. Earthquake Engineering & Structural Dynamics, 48(12), 2045-2067.
Kokusho, T., & Fujiwara, A. (2009). Introduction to seismic design and evaluation of buildings using ANSYS. Springer.
1. Begin by creating a two-dimensional finite element model of the residential building that captures the key characteristics of the building.
2. Define the load cases applied to the model to simulate dynamic response.
3. Specify material and geometric properties for the model, including mass, damping, and stiffness.
4. Employ explicit and implicit dynamic analysis techniques to simulate dynamic response.
5. Asses the structural integrity of the building based on results.
6. If necessary, refine the model further to improve accuracy of the analysis.
7. Generate results for each load case and compare them to code-based design criteria.
8. Perform incremental dynamic analysis to investigate behavior under larger loads.
9. Analyze non-linear effects and formulate corrective measures if needed. 10. Validate the analysis by running a series of verification tests.
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