November 30, 2019 at 8:45 amMakKimleangSubscriber
Dear Sir/ Madam,
I am doing a master's degree with a research topic of "strengthening the shear capacity of reinforcement beam with specific methods using shape memory alloys". Before I go through the method and using smart materials, I first try to simulate many normal reinforcement beams with explicit dynamics to see what type of shear failure of RC beam could occur when we use different of the stirrup, and it seems to have some problems with the data of shear stress of the beam.
Using line then create bars section to make the reinforcement in beam
Beam is 1100mm length x 150mm depth x 80mm width
Stirrup spacing 75mm
Property: -Normal Structural Steel
-Concrete 35MPa (Explicit Dynamics)
Connection: -Body interaction (Fictional :Fictional Coefficent 0.1)
Meshing: Body sizing 10mm
Boundary condition: - Fixed displacement and roller displacement
- Loading: 120kN
These 3 images above are the first simulation with less stirrup.
These 2 figures show the RC beam with full stirrup with the same boundary condition and meshing size.
Problem: here is 2 examples of my simulation (one with full stirrup and another one with less stirrup) to identify the failure of shear to strengthen in the specific shear zone of RC beams
1. 2 of simulations show a similar result of shear stress (I think the RC beam with less stirrup shall show the higher in shear stress than the RC beam with full stirrup)
2. I simulate the RC beam with 4 point load bending test and, the failure of concrete seems to damage on the load area but not act like the diagonal failure of shear stress like other research paper have tested (is it because I did it wrong with the load or with the reaction?).
3. The stirrup inside the concrete beams separates apart like they are not connected with each other. (I think I have a problem with creating these stirrups in SpaceClaim geometry, so please give me some suggestion with that) .
1. To find the shear stress failure in different uses of the stirrup in the reinforcement beams
2. Identify the shear failure zone before using the material for strengthening in shear capacity.
I hope you guys could help me with these problems and give me some suggestions with my Ansys simulation. I am looking forward to hearing from you, and please have a nice day!
May 8, 2020 at 7:13 pmbiiahofmannSubscriber
Im a civil engineering student and im doing my final project in ansys, but im having a similar problem with my analysis. Did you manage to find a solution?
Im a newbie in ansys, and I've been using it for only a few months, I paid a course but it only teached me the basics about it.
I decided to do my simulation in Explicit Dynamics because my beams have circular openings, so near the openings the mesh gets a different shape, so the stirrups dont get perfectly alligned with the concrete nodes, which made my life pretty hard on static structural since it needs both materials on the same nodes.
I was wondering if anone could help me with my problem. I attached the images from my simulation, but the results are basically the same for the beam without the opening to the one with opening, which I know should be very different.
- You must be logged in to reply to this topic.
Boost Ansys Fluent Simulations with AWS
Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.
Earth Rescue – An Ansys Online Series
The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.
Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.
- Solver Pivot Warning in Beam Element Model
- Saving & sharing of Working project files in .wbpz format
- Understanding Force Convergence Solution Output
- An Unknown error occurred during solution. Check the Solver Output…..
- What is the difference between bonded contact region and fixed joint
- User manual
- The solver engine was unable to converge on a solution for the nonlinear problem as constrained.
- whether have the difference between using contact and target bodies
- material damping and modal analysis
- Colors and Mesh Display
© 2023 Copyright ANSYS, Inc. All rights reserved.