Related Experiment Video
Updated: May 28, 2025
06:34
Finite Element Modeling for the Simulation of the Quasi-Static Compression of Corrugated Tapered Tubes
Published on: January 6, 2023
1.6K
Study on anti-collapse performance of CFST structures under collision load in different cases
Lian Song1, Lin Wang2, Xuan Wang1
1College of Urban Construction and Engineering, Chongqing University of Arts and Sciences, Chongqing, China.
Plos One
|February 12, 2025
Summary
This study simulates low-speed vehicle impacts on concrete filled steel tube (CFST) frames. Impact velocity significantly affects structural response and poses risks to building stability.
Area of Science:
- Structural Engineering
- Mechanical Engineering
- Materials Science
Background:
- Vehicle impacts pose risks to structural integrity, potentially leading to progressive collapse.
- Assessing the residual capacity of structures after impact is crucial for safety.
Purpose of the Study:
- To investigate the continuous collapse resistance of concrete filled steel tube (CFST) composite plane frames under vehicle impact.
- To analyze the influence of impact velocity and evaluate the reliability of different analysis methods.
Main Methods:
- Finite element analysis using ABAQUS software.
- Orthogonal experimental design and numerical simulation of low-speed impact scenarios.
- Comparison of Direct Simulation (DS) and Alternate Path (AP) methods.
Main Results:
- Two distinct deformation modes were observed for the impact and remaining frame.
- Axial forces in columns showed varied responses post-impact, with velocity being a key factor.
- The Alternate Path (AP) method was found unreliable for assessing internal forces and collapse degree.
Conclusions:
- Impact velocity is the most critical factor influencing the dynamic effects on the remaining structure.
- The study highlights the limitations of the AP method in impact load scenarios.
- Findings are significant for enhancing the anti-collapse capabilities of buildings subjected to accidental impacts.
Related Concept Videos
01:22Design Consideration
177
Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
The factor of safety is another key...
The factor of safety is another key...
177
01:14Stability of structures
153
In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...
153
01:04Applications of Stress
243
Consider a structure made of a boom and a rod designed to support a load. These two components are connected by a pin and stabilized by brackets and pins. The boom and the rod are detached from their supports to assess the different stresses imposed on this structure, and a free-body diagram is drawn. Then, all the forces applied, including the load acting on the structure, are identified. The reaction forces exerted on both the boom and the rod are computed using the equilibrium equations.
The...
The...
243
01:23Stresses under Combined Loadings
138
When analyzing a bent tube with a circular cross-section subjected to multiple forces, it is crucial to determine the stress distribution in order to maintain structural integrity under varied load conditions.
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
138
01:17Design of Columns under a Centric Load
104
The design of columns under centric load is a fundamental aspect of structural engineering and is critical for ensuring the stability and integrity of structures. Euler's and Secant's formulas are central to understanding and calculating the critical load and deformation behaviors of columns, providing a basis for safe and effective structural design.
Euler's formula is applicable under the assumption that the column is a perfect, straight, homogenous prism, and it is operating...
Euler's formula is applicable under the assumption that the column is a perfect, straight, homogenous prism, and it is operating...
104
01:15Stress: General Loading Conditions
299
To grasp the intricacy of real-world conditions where multiple loads are applied simultaneously to a structure, one might visualize a section passing through a specific point within a body, aligned parallel to the xy plane. This section is subjected to various forces, including original loads, normal forces, and shearing forces.
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes....
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes....
299